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Nathan Parsons

2018-Oct-17 16:19 UTC

[R] Matching multiple search criteria (Unlisting a nested dataset, take 2)

I do not have your command of base r, Bert. That is a herculean effort! Here?s
what I spent my night putting together:

## Create search terms
## dput(st)
st <- structure(list(word1 = c("technique", "me",
"me", "feel", "feel"
), word2 = c("olympic", "abused", "hurt",
"hopeless", "alone"
), word3 = c("lifts", "depressed", "depressed",
"depressed",
"depressed")), class = c("tbl_df", "tbl",
"data.frame"), row.names = c(NA,
-5L))

## Create tweets
## dput(th)
th <- structure(list(status_id = c("x1047841705729306624",
"x1046966595610927105",
"x1047094786610552832", "x1046988542818308097",
"x1046934493553221632",
"x1047227442899775488", "x1048126008941981696",
"x1047798782673543173",
"x1048269727582355457", "x1048092408544677890"), created_at
= c("2018-10-04T13:31:45Z",
"2018-10-02T03:34:22Z", "2018-10-02T12:03:45Z",
"2018-10-02T05:01:35Z",
"2018-10-02T01:26:49Z", "2018-10-02T20:50:53Z",
"2018-10-05T08:21:28Z",
"2018-10-04T10:41:11Z", "2018-10-05T17:52:33Z",
"2018-10-05T06:07:57Z"
), text = c("technique is everything with olympic lifts ! @ body by john
",
"@subtronics just went back and rewatched ur fblice with ur cdjs and let me
tell you man. you are the fucking messiah",
"@ic4rus1 opportunistic means short-game. as in getting drunk now vs. not
being hung over tomorrow vs. not fucking up your life ten years later.",
"i tend to think about my dreams before i sleep.",
"@michaelavenatti @senatorcollins so if your client was in her 20s
attending parties with teenagers doesnt that make her at the least immature as
hell or at the worst a pedophile and a person contributing to the delinquency of
minors?",
"i wish i could take credit for this", "i woulda never imagined.
#lakeshow ",
"@philipbloom @blackmagic_news its ok phil! i feel your pain! ",
"sunday ill have a booth in katy at the real craft wives of katy fest
@nolabelbrewco cmon yall!everything is better when you top it with tias!order
today we ship to all 50 ",
"dolly is so baddd"), lat = c(43.6835853, 40.284123, 37.7706565,
40.431389, 31.1688935, 33.9376735, 34.0207895, 44.900818, 29.7926,
32.364145), lng = c(-70.3284118, -83.078589, -122.4359785, -79.9806895,
-100.0768885, -118.130426, -118.4119065, -89.5694915, -95.8224,
-86.2447285), county_name = c("Cumberland County", "Delaware
County",
"San Francisco County", "Allegheny County", "Concho
County",
"Los Angeles County", "Los Angeles County", "Marathon
County",
"Harris County", "Montgomery County"), fips = c(23005L,
39041L,
6075L, 42003L, 48095L, 6037L, 6037L, 55073L, 48201L, 1101L),
state_name = c("Maine", "Ohio", "California",
"Pennsylvania",
"Texas", "California", "California",
"Wisconsin", "Texas",
"Alabama"), state_abb = c("ME", "OH",
"CA", "PA", "TX", "CA",
"CA", "WI", "TX", "AL"), urban_level =
c("Medium Metro",
"Large Fringe Metro", "Large Central Metro", "Large
Central Metro",
"NonCore (Nonmetro)", "Large Central Metro", "Large
Central Metro",
"Small Metro", "Large Central Metro", "Medium
Metro"), urban_code = c(3L,
2L, 1L, 1L, 6L, 1L, 1L, 4L, 1L, 3L), population = c(277308L,
184029L, 830781L, 1160433L, 4160L, 9509611L, 9509611L, 127612L,
4233913L, 211037L), linenumber = 1:10), row.names = c(NA,
10L), class = "data.frame")

## Clean tweets - basically just remove everything we don?t need from the text
including punctuation and urls
th %>%
mutate(linenumber = row_number(),
text = str_remove_all(text, "[^\x01-\x7F]"),
text = str_remove_all(text, "\n"),
text = str_remove_all(text, ","),
text = str_remove_all(text, "'"),
text = str_remove_all(text, "&"),
text = str_remove_all(text, "<"),
text = str_remove_all(text, ">"),
text = str_remove_all(text, "http[s]?://[[:alnum:].\\/]+"),
text = tolower(text)) -> th

## Create search function that looks for each search term in the provided
string, evaluates if all three search terms have been found, and returns a
logical
srchr <- function(df) {
str_detect(df, "olympic") -> a
str_detect(df, "technique") -> b
str_detect(df, "lifts") -> c
ifelse(a == TRUE & b == TRUE & c == TRUE, TRUE, FALSE)
}

## Evaluate tweets for presence of search term
th %>%
mutate(flag = map_chr(text, srchr)) -> th_flagged

As far as I can tell, this works. I have to manually enter each set of search
terms into the function, which is not ideal. Also, this only generates a
True/False for each tweet based on one search term - I end up with an evaluatory
column for each search term that I would then have to collapse together somehow.
I?m sure there?s a more elegant solution.

--

Nate Parsons
Pronouns: He, Him, His
Graduate Teaching Assistant
Department of Sociology
Portland State University
Portland, Oregon

503-725-9025
503-725-3957 FAX
On Oct 16, 2018, 7:20 PM -0700, Bert Gunter <bgunter.4567 at gmail.com>,
wrote:> OK, as no one else has offered a solution, I'll take a whack at it.
>
> Caveats: This is a brute force attempt using R's basic regular
expression engine. It is inelegant and barely tested, so likely to be at best
incomplete and buggy, and at worst, incorrect. But maybe Nathan or someone else
on the list can fix it up. So if (when) it breaks, complain on the list to give
someone (almost certainly not me) the opportunity.
>
> The basic idea is that the tweets are just character strings and the search
phrases are just character vectors all of whose elements must match
"appropriately" -- i.e. they must match whole words -- in the
character strings. So my desired output from the code is a list indexed by the
search phrases, each of whose components if a logical vector of length the
number of tweets each of whose elements = TRUE iff all the words in the search
phrase match somewhere in the tweet.
>
> Here's the code(using the data Nathan provided):
>
> > words <- sapply(st[[1]],strsplit,split = " +" )
> ## convert the phrases to a list of character vectors of the words
> ## Result:
> > words
> $`me abused depressed`
> [1] "me"??????? "abused"??? "depressed"
>
> $`me hurt depressed`
> [1] "me"??????? "hurt"????? "depressed"
>
> $`feel hopeless depressed`
> [1] "feel"????? "hopeless"? "depressed"
>
> $`feel alone depressed`
> [1] "feel"????? "alone"???? "depressed"
>
> $`i feel helpless`
> [1] "i"??????? "feel"???? "helpless"
>
> $`i feel worthless`
> [1] "i"???????? "feel"????? "worthless"
>
> > expand.words <-? function(z)lapply(z,function(x)paste0(c("^
*"," "," "),x, c(" "," ","
*$")))
> ## function to create regexes for words when they are at the beginning,
middle, or end of tweets
>
> > wordregex <- lapply(words,expand.words)
> ##Result
> ## too lengthy to include
> ##
> > tweets <- th$text
> ##extract the tweets
> > findin <- function(x,y)
> ?? ## x is a vector of regex patterns
> ?? ## y is a character vector
> ?? ## value = vector,vec, with length(vec) == length(y) and vec[i] == TRUE
iff any of x matches y[i]
> { apply(sapply(x,function(z)grepl(z,y)), 1,any)
> }
>
> ## add a matching "tweet" to the tweet vector:
> > tweets <- c(tweets," i xxxx worthless yxxc ght feel")
>
> > ans <-
lapply(wordregex,function(z)apply(sapply(z,function(x)findin(x,tweets)), 1,
all))
> ## Result:
> > ans
> $`me abused depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`me hurt depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`feel hopeless depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`feel alone depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`i feel helpless`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`i feel worthless`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE? TRUE
>
> ## None of the tweets match any of the phrases except for the last tweet
that I added.
>
> ## Note: you need to add capabilities to handle upper and lower case. See,
e.g. ?casefold
>
> Cheers,
> Bert
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along
and sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip
)
>
>
> > On Tue, Oct 16, 2018 at 3:03 PM Bert Gunter <bgunter.4567 at
gmail.com> wrote:
> > > The problem wasn't the data tibbles. You posted in html --
which you were explictly warned against -- and that corrupted your text (e.g.
some quotes became "smart quotes", which cannot be properly cut and
pasted into R).
> > >
> > > Bert
> > >
> > >
> > > > On Tue, Oct 16, 2018 at 2:47 PM Nathan Parsons
<nathan.f.parsons at gmail.com> wrote:
> > > > > Argh! Here are those two example datasets as data
frames (not tibbles).
> > > > > Sorry again. This apparently is just not my day.
> > > > >
> > > > >
> > > > > th <- structure(list(status_id =
c("x1047841705729306624",
> > > > > "x1046966595610927105",
> > > > >
> > > > > "x1047094786610552832",
"x1046988542818308097", "x1046934493553221632",
> > > > >
> > > > > "x1047227442899775488"), created_at =
c("2018-10-04T13:31:45Z",
> > > > >
> > > > > "2018-10-02T03:34:22Z",
"2018-10-02T12:03:45Z", "2018-10-02T05:01:35Z",
> > > > >
> > > > > "2018-10-02T01:26:49Z",
"2018-10-02T20:50:53Z"), text = c("Technique is
> > > > > everything with olympic lifts ! @ Body By John
https://t.co/UsfR6DafZt",
> > > > >
> > > > > "@Subtronics just went back and rewatched ur
FBlice with ur CDJs and let me
> > > > > tell you man. You are the fucking messiah",
> > > > >
> > > > > "@ic4rus1 Opportunistic means short-game. As in
getting drunk now vs. not
> > > > > being hung over tomorrow vs. not fucking up your life
ten years later.",
> > > > >
> > > > > "I tend to think about my dreams before I
sleep.", "@MichaelAvenatti
> > > > > @SenatorCollins So,? if your client was in her 20s,
attending parties with
> > > > > teenagers, doesn't that make her at the least
immature as hell, or at the
> > > > > worst, a pedophile and a person contributing to the
delinquency of minors?",
> > > > >
> > > > >
> > > > > "i wish i could take credit for this"), lat =
c(43.6835853, 40.284123,
> > > > >
> > > > > 37.7706565, 40.431389, 31.1688935, 33.9376735), lng =
c(-70.3284118,
> > > > >
> > > > > -83.078589, -122.4359785, -79.9806895, -100.0768885,
-118.130426
> > > > >
> > > > > ), county_name = c("Cumberland County",
"Delaware County", "San Francisco
> > > > > County",
> > > > >
> > > > > "Allegheny County", "Concho
County", "Los Angeles County"), fips = c(23005L,
> > > > >
> > > > >
> > > > > 39041L, 6075L, 42003L, 48095L, 6037L), state_name =
c("Maine",
> > > > >
> > > > > "Ohio", "California",
"Pennsylvania", "Texas", "California"),
> > > > >
> > > > > ? ? state_abb = c("ME", "OH",
"CA", "PA", "TX", "CA"), urban_level
> > > > > c("Medium Metro",
> > > > >
> > > > > ? ? "Large Fringe Metro", "Large Central
Metro", "Large Central Metro",
> > > > >
> > > > > ? ? "NonCore (Nonmetro)", "Large Central
Metro"), urban_code = c(3L,
> > > > >
> > > > > ? ? 2L, 1L, 1L, 6L, 1L), population = c(277308L,
184029L, 830781L,
> > > > >
> > > > > ? ? 1160433L, 4160L, 9509611L)), class =
"data.frame", row.names = c(NA,
> > > > >
> > > > > -6L))
> > > > >
> > > > >
> > > > > st <- structure(list(terms = c("me abused
depressed", "me hurt depressed",
> > > > >
> > > > > "feel hopeless depressed", "feel alone
depressed", "i feel helpless",
> > > > >
> > > > > "i feel worthless")), row.names = c(NA, -6L),
class = c("tbl_df",
> > > > >
> > > > > "tbl", "data.frame"))
> > > > >
> > > > > On Tue, Oct 16, 2018 at 2:39 PM Nathan Parsons
<nathan.f.parsons at gmail.com>
> > > > > wrote:
> > > > >
> > > > > > Thanks all for your patience. Here?s a second go
that is perhaps more
> > > > > > explicative of what it is I am trying to
accomplish (and hopefully in plain
> > > > > > text form)...
> > > > > >
> > > > > >
> > > > > > I?m using the following packages: tidyverse,
purrr, tidytext
> > > > > >
> > > > > >
> > > > > > I have a number of tweets in the following form:
> > > > > >
> > > > > >
> > > > > > th <- structure(list(status_id =
c("x1047841705729306624",
> > > > > > "x1046966595610927105",
> > > > > >
> > > > > > "x1047094786610552832",
"x1046988542818308097", "x1046934493553221632",
> > > > > >
> > > > > > "x1047227442899775488"), created_at =
c("2018-10-04T13:31:45Z",
> > > > > >
> > > > > > "2018-10-02T03:34:22Z",
"2018-10-02T12:03:45Z", "2018-10-02T05:01:35Z",
> > > > > >
> > > > > > "2018-10-02T01:26:49Z",
"2018-10-02T20:50:53Z"), text = c("Technique is
> > > > > > everything with olympic lifts ! @ Body By John
https://t.co/UsfR6DafZt",
> > > > > >
> > > > > > "@Subtronics just went back and rewatched ur
FBlice with ur CDJs and let
> > > > > > me tell you man. You are the fucking
messiah",
> > > > > >
> > > > > > "@ic4rus1 Opportunistic means short-game. As
in getting drunk now vs. not
> > > > > > being hung over tomorrow vs. not fucking up your
life ten years later.",
> > > > > >
> > > > > > "I tend to think about my dreams before I
sleep.", "@MichaelAvenatti
> > > > > > @SenatorCollins So, if your client was in her 20s,
attending parties with
> > > > > > teenagers, doesn't that make her at the least
immature as hell, or at the
> > > > > > worst, a pedophile and a person contributing to
the delinquency of minors?",
> > > > > >
> > > > > > "i wish i could take credit for this"),
lat = c(43.6835853, 40.284123,
> > > > > >
> > > > > > 37.7706565, 40.431389, 31.1688935, 33.9376735),
lng = c(-70.3284118,
> > > > > >
> > > > > > -83.078589, -122.4359785, -79.9806895,
-100.0768885, -118.130426
> > > > > >
> > > > > > ), county_name = c("Cumberland County",
"Delaware County", "San Francisco
> > > > > > County",
> > > > > >
> > > > > > "Allegheny County", "Concho
County", "Los Angeles County"), fips > > > > >
> c(23005L,
> > > > > >
> > > > > > 39041L, 6075L, 42003L, 48095L, 6037L), state_name
= c("Maine",
> > > > > >
> > > > > > "Ohio", "California",
"Pennsylvania", "Texas", "California"),
> > > > > >
> > > > > > state_abb = c("ME", "OH",
"CA", "PA", "TX", "CA"), urban_level =
c("Medium
> > > > > > Metro",
> > > > > >
> > > > > > "Large Fringe Metro", "Large
Central Metro", "Large Central Metro",
> > > > > >
> > > > > > "NonCore (Nonmetro)", "Large
Central Metro"), urban_code = c(3L,
> > > > > >
> > > > > > 2L, 1L, 1L, 6L, 1L), population = c(277308L,
184029L, 830781L,
> > > > > >
> > > > > > 1160433L, 4160L, 9509611L)), class =
c("data.table", "data.frame"
> > > > > >
> > > > > > ), row.names = c(NA, -6L), .internal.selfref = )
> > > > > >
> > > > > >
> > > > > > I also have a number of search terms in the
following form:
> > > > > >
> > > > > >
> > > > > > st <- structure(list(terms = c("me abused
depressed", "me hurt depressed",
> > > > > >
> > > > > > "feel hopeless depressed", "feel
alone depressed", "i feel helpless",
> > > > > >
> > > > > > "i feel worthless")), row.names = c(NA,
-6L), class = c("tbl_df",
> > > > > >
> > > > > > "tbl", "data.frame?))
> > > > > >
> > > > > >
> > > > > > I am trying to isolate the tweets that contain all
of the words in each of
> > > > > > the search terms, i.e ?me? ?abused? and
?depressed? from the first example
> > > > > > search term, but they do not have to be in order
or even next to one
> > > > > > another.
> > > > > >
> > > > > >
> > > > > > I am familiar with the dplyr suite of tools and
have been attempting to
> > > > > > generate some sort of ?filter()? to do this. I am
not very familiar with
> > > > > > purrr, but there may be a solution using the map
function? I have also
> > > > > > explored the tidytext ?unnest_tokens? function
which transforms the ?th?
> > > > > > data in the following way:
> > > > > >
> > > > > >
> > > > > > > tidytext::unnest_tokens(th, word, text, token
= "tweets") -> tt
> > > > > >
> > > > > > > head(tt)
> > > > > >
> > > > > > status_id created_at lat lng
> > > > > >
> > > > > > 1: x1047841705729306624 2018-10-04T13:31:45Z
43.68359 -70.32841
> > > > > >
> > > > > > 2: x1047841705729306624 2018-10-04T13:31:45Z
43.68359 -70.32841
> > > > > >
> > > > > > 3: x1047841705729306624 2018-10-04T13:31:45Z
43.68359 -70.32841
> > > > > >
> > > > > > 4: x1047841705729306624 2018-10-04T13:31:45Z
43.68359 -70.32841
> > > > > >
> > > > > > 5: x1047841705729306624 2018-10-04T13:31:45Z
43.68359 -70.32841
> > > > > >
> > > > > > 6: x1047841705729306624 2018-10-04T13:31:45Z
43.68359 -70.32841
> > > > > >
> > > > > > county_name fips state_name state_abb urban_level
urban_code
> > > > > >
> > > > > > 1: Cumberland County 23005 Maine ME Medium Metro 3
> > > > > >
> > > > > > 2: Cumberland County 23005 Maine ME Medium Metro 3
> > > > > >
> > > > > > 3: Cumberland County 23005 Maine ME Medium Metro 3
> > > > > >
> > > > > > 4: Cumberland County 23005 Maine ME Medium Metro 3
> > > > > >
> > > > > > 5: Cumberland County 23005 Maine ME Medium Metro 3
> > > > > >
> > > > > > 6: Cumberland County 23005 Maine ME Medium Metro 3
> > > > > >
> > > > > > population word
> > > > > >
> > > > > > 1: 277308 technique
> > > > > >
> > > > > > 2: 277308 is
> > > > > >
> > > > > > 3: 277308 everything
> > > > > >
> > > > > > 4: 277308 with
> > > > > >
> > > > > > 5: 277308 olympic
> > > > > >
> > > > > > 6: 277308 lifts
> > > > > >
> > > > > >
> > > > > > but once I have unnested the tokens, I am unable
to recombine them back
> > > > > > into tweets.
> > > > > >
> > > > > >
> > > > > > Ideally the end result would append a new column
to the ?th? data that
> > > > > > would flag a tweet that contained all of the
search words for any of the
> > > > > > search terms; so the work flow would look like
> > > > > >
> > > > > > 1) look for all search words for one search term
in a tweet
> > > > > >
> > > > > > 2) if all of the search words in the search term
are found, create a flag
> > > > > > (mutate(flag = 1) or some such)
> > > > > >
> > > > > > 3) do this for all of the tweets
> > > > > >
> > > > > > 4) move on the next search term and repeat
> > > > > >
> > > > > >
> > > > > > Again, my thanks for your patience.
> > > > > >
> > > > > >
> > > > > > --
> > > > > >
> > > > > >
> > > > > > Nate Parsons
> > > > > >
> > > > > > Pronouns: He, Him, His
> > > > > >
> > > > > > Graduate Teaching Assistant
> > > > > >
> > > > > > Department of Sociology
> > > > > >
> > > > > > Portland State University
> > > > > >
> > > > > > Portland, Oregon
> > > > > >
> > > > > >
> > > > > > 503-725-9025
> > > > > >
> > > > > > 503-725-3957 FAX
> > > > > >
> > > > >
> > > > > ? ? ? ? [[alternative HTML version deleted]]
> > > > >
> > > > > ______________________________________________
> > > > > R-help at r-project.org mailing list -- To UNSUBSCRIBE
and more, see
> > > > > https://stat.ethz.ch/mailman/listinfo/r-help
> > > > > PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> > > > > and provide commented, minimal, self-contained,
reproducible code.
	[[alternative HTML version deleted]]

Bert Gunter

2018-Oct-18 02:50 UTC

head link

[R] Matching multiple search criteria (Unlisting a nested dataset, take 2)

If you wish to use R, you need to at least understand its basic data
structures and functionality. Expecting that mimickry of code in special
packages will suffice is, I believe, an illusion. If you haven't already
done so, you should go through a basic R tutorial or two (there are many on
the web; some recommendations, by no means necessarily "the best", 
can be
found here:
https://www.rstudio.com/online-learning/#r-programming).

Having said that, I realized that my previous "solution" using regular
expressions was more complicated than it needed to be and somewhat foolish
( so much for all my "expertise"). A simpler and better approach is
simply
to break up both the tweet texts and your search phrases into vectors of
their "words" (i.e. character strings surrounded by spaces) using
strplit(), and then using R's built-in matching capabilities with %in%.
This is quite straightforward, pretty robust (no regex's to wrestle with),
and does not require "herculean efforts" to understand. The only
wrinkle is
some bookkeeping with the "apply" family of functions. These are, as
you
may know, the functional programming way of handling iteration (loops), but
they are what I would consider part of "basic" R functionality and
worth
spending the time to learn about.

Herewith my better, simpler proposal, using your example data as before:

getwords <- function(x)strsplit(tolower(x),split = " +")
## split text into a vector of lower-cased "words"

phrasewords <- structure(getwords(st$terms), names = st$terms)
## named list of your search word vectors

tweets <- getwords(c(th$text, " i xxxx worthless yxxc ght feel"))
## the tweets + one additional that should match the last phrase

ans <- lapply(phrasewords, function(x) apply(sapply(tweets,function(y)x
%in% y), 2, all))
## a list indexed by the search phrases,
## with each component a vector of logicals with vec[i] == TRUE iff
## the ith tweet contains all the words in the search phrase
> ans$`me abused depressed`
[1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE

$`me hurt depressed`
[1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE

$`feel hopeless depressed`
[1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE

$`feel alone depressed`
[1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE

$`i feel helpless`
[1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE

$`i feel worthless`
[1] FALSE FALSE FALSE FALSE FALSE FALSE  TRUE

-- Bert

On Wed, Oct 17, 2018 at 9:20 AM Nathan Parsons <nathan.f.parsons at
gmail.com>
wrote:
> I do not have your command of base r, Bert. That is a herculean effort!
> Here?s what I spent my night putting together:
>
> ## Create search terms
> ## dput(st)
> st <- structure(list(word1 = c("technique", "me",
"me", "feel", "feel"
> ), word2 = c("olympic", "abused", "hurt",
"hopeless", "alone"
> ), word3 = c("lifts", "depressed",
"depressed", "depressed",
> "depressed")), class = c("tbl_df", "tbl",
"data.frame"), row.names = c(NA,
> -5L))
>
> ## Create tweets
> ## dput(th)
> th <- structure(list(status_id = c("x1047841705729306624",
> "x1046966595610927105",
> "x1047094786610552832", "x1046988542818308097",
"x1046934493553221632",
> "x1047227442899775488", "x1048126008941981696",
"x1047798782673543173",
> "x1048269727582355457", "x1048092408544677890"),
created_at > c("2018-10-04T13:31:45Z",
> "2018-10-02T03:34:22Z", "2018-10-02T12:03:45Z",
"2018-10-02T05:01:35Z",
> "2018-10-02T01:26:49Z", "2018-10-02T20:50:53Z",
"2018-10-05T08:21:28Z",
> "2018-10-04T10:41:11Z", "2018-10-05T17:52:33Z",
"2018-10-05T06:07:57Z"
> ), text = c("technique is everything with olympic lifts ! @ body by
john ",
> "@subtronics just went back and rewatched ur fblice with ur cdjs and
let
> me tell you man. you are the fucking messiah",
> "@ic4rus1 opportunistic means short-game. as in getting drunk now vs.
not
> being hung over tomorrow vs. not fucking up your life ten years
later.",
> "i tend to think about my dreams before i sleep.",
"@michaelavenatti
> @senatorcollins so if your client was in her 20s attending parties with
> teenagers doesnt that make her at the least immature as hell or at the
> worst a pedophile and a person contributing to the delinquency of
minors?",
> "i wish i could take credit for this", "i woulda never
imagined. #lakeshow
> ",
> "@philipbloom @blackmagic_news its ok phil! i feel your pain! ",
> "sunday ill have a booth in katy at the real craft wives of katy fest
> @nolabelbrewco cmon yall!everything is better when you top it with
> tias!order today we ship to all 50 ",
> "dolly is so baddd"), lat = c(43.6835853, 40.284123, 37.7706565,
> 40.431389, 31.1688935, 33.9376735, 34.0207895, 44.900818, 29.7926,
> 32.364145), lng = c(-70.3284118, -83.078589, -122.4359785, -79.9806895,
> -100.0768885, -118.130426, -118.4119065, -89.5694915, -95.8224,
> -86.2447285), county_name = c("Cumberland County", "Delaware
County",
> "San Francisco County", "Allegheny County",
"Concho County",
> "Los Angeles County", "Los Angeles County",
"Marathon County",
> "Harris County", "Montgomery County"), fips = c(23005L,
39041L,
> 6075L, 42003L, 48095L, 6037L, 6037L, 55073L, 48201L, 1101L),
> state_name = c("Maine", "Ohio", "California",
"Pennsylvania",
> "Texas", "California", "California",
"Wisconsin", "Texas",
> "Alabama"), state_abb = c("ME", "OH",
"CA", "PA", "TX", "CA",
> "CA", "WI", "TX", "AL"),
urban_level = c("Medium Metro",
> "Large Fringe Metro", "Large Central Metro",
"Large Central Metro",
> "NonCore (Nonmetro)", "Large Central Metro",
"Large Central Metro",
> "Small Metro", "Large Central Metro", "Medium
Metro"), urban_code = c(3L,
> 2L, 1L, 1L, 6L, 1L, 1L, 4L, 1L, 3L), population = c(277308L,
> 184029L, 830781L, 1160433L, 4160L, 9509611L, 9509611L, 127612L,
> 4233913L, 211037L), linenumber = 1:10), row.names = c(NA,
> 10L), class = "data.frame")
>
> ## Clean tweets - basically just remove everything we don?t need from the
> text including punctuation and urls
> th %>%
> mutate(linenumber = row_number(),
> text = str_remove_all(text, "[^\x01-\x7F]"),
> text = str_remove_all(text, "\n"),
> text = str_remove_all(text, ","),
> text = str_remove_all(text, "'"),
> text = str_remove_all(text, "&"),
> text = str_remove_all(text, "<"),
> text = str_remove_all(text, ">"),
> text = str_remove_all(text, "http[s]?://[[:alnum:].\\/]+"),
> text = tolower(text)) -> th
>
> ## Create search function that looks for each search term in the provided
> string, evaluates if all three search terms have been found, and returns a
> logical
> srchr <- function(df) {
> str_detect(df, "olympic") -> a
> str_detect(df, "technique") -> b
> str_detect(df, "lifts") -> c
> ifelse(a == TRUE & b == TRUE & c == TRUE, TRUE, FALSE)
> }
>
> ## Evaluate tweets for presence of search term
> th %>%
> mutate(flag = map_chr(text, srchr)) -> th_flagged
>
> As far as I can tell, this works. I have to manually enter each set of
> search terms into the function, which is not ideal. Also, this only
> generates a True/False for each tweet based on one search term - I end up
> with an evaluatory column for each search term that I would then have to
> collapse together somehow. I?m sure there?s a more elegant solution.
>
> --
>
> Nate Parsons
> Pronouns: He, Him, His
> Graduate Teaching Assistant
> Department of Sociology
> Portland State University
> Portland, Oregon
>
> 503-725-9025
> 503-725-3957 FAX
> On Oct 16, 2018, 7:20 PM -0700, Bert Gunter <bgunter.4567 at
gmail.com>,
> wrote:
>
> OK, as no one else has offered a solution, I'll take a whack at it.
>
> Caveats: This is a brute force attempt using R's basic regular
expression
> engine. It is inelegant and barely tested, so likely to be at best
> incomplete and buggy, and at worst, incorrect. But maybe Nathan or someone
> else on the list can fix it up. So if (when) it breaks, complain on the
> list to give someone (almost certainly not me) the opportunity.
>
> The basic idea is that the tweets are just character strings and the
> search phrases are just character vectors all of whose elements must match
> "appropriately" -- i.e. they must match whole words -- in the
character
> strings. So my desired output from the code is a list indexed by the search
> phrases, each of whose components if a logical vector of length the number
> of tweets each of whose elements = TRUE iff all the words in the search
> phrase match somewhere in the tweet.
>
> Here's the code(using the data Nathan provided):
>
> > words <- sapply(st[[1]],strsplit,split = " +" )
> ## convert the phrases to a list of character vectors of the words
> ## Result:
> > words
> $`me abused depressed`
> [1] "me"        "abused"    "depressed"
>
> $`me hurt depressed`
> [1] "me"        "hurt"      "depressed"
>
> $`feel hopeless depressed`
> [1] "feel"      "hopeless"  "depressed"
>
> $`feel alone depressed`
> [1] "feel"      "alone"     "depressed"
>
> $`i feel helpless`
> [1] "i"        "feel"     "helpless"
>
> $`i feel worthless`
> [1] "i"         "feel"      "worthless"
>
> > expand.words <-  function(z)lapply(z,function(x)paste0(c("^
*"," ","
> "),x, c(" "," "," *$")))
> ## function to create regexes for words when they are at the beginning,
> middle, or end of tweets
>
> > wordregex <- lapply(words,expand.words)
> ##Result
> ## too lengthy to include
> ##
> > tweets <- th$text
> ##extract the tweets
> > findin <- function(x,y)
>    ## x is a vector of regex patterns
>    ## y is a character vector
>    ## value = vector,vec, with length(vec) == length(y) and vec[i] == TRUE
> iff any of x matches y[i]
> { apply(sapply(x,function(z)grepl(z,y)), 1,any)
> }
>
> ## add a matching "tweet" to the tweet vector:
> > tweets <- c(tweets," i xxxx worthless yxxc ght feel")
>
> > ans <-
> lapply(wordregex,function(z)apply(sapply(z,function(x)findin(x,tweets)), 1,
> all))
> ## Result:
> > ans
> $`me abused depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`me hurt depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`feel hopeless depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`feel alone depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`i feel helpless`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`i feel worthless`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE  TRUE
>
> ## None of the tweets match any of the phrases except for the last tweet
> that I added.
>
> ## Note: you need to add capabilities to handle upper and lower case. See,
> e.g. ?casefold
>
> Cheers,
> Bert
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along
and
> sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip
)
>
>
> On Tue, Oct 16, 2018 at 3:03 PM Bert Gunter <bgunter.4567 at
gmail.com>
> wrote:
>
>> The problem wasn't the data tibbles. You posted in html -- which
you were
>> explictly warned against -- and that corrupted your text (e.g. some
quotes
>> became "smart quotes", which cannot be properly cut and
pasted into R).
>>
>> Bert
>>
>>
>> On Tue, Oct 16, 2018 at 2:47 PM Nathan Parsons <
>> nathan.f.parsons at gmail.com> wrote:
>>
>>> Argh! Here are those two example datasets as data frames (not
tibbles).
>>> Sorry again. This apparently is just not my day.
>>>
>>>
>>> th <- structure(list(status_id =
c("x1047841705729306624",
>>> "x1046966595610927105",
>>>
>>> "x1047094786610552832", "x1046988542818308097",
"x1046934493553221632",
>>>
>>> "x1047227442899775488"), created_at =
c("2018-10-04T13:31:45Z",
>>>
>>> "2018-10-02T03:34:22Z", "2018-10-02T12:03:45Z",
"2018-10-02T05:01:35Z",
>>>
>>> "2018-10-02T01:26:49Z",
"2018-10-02T20:50:53Z"), text = c("Technique is
>>> everything with olympic lifts ! @ Body By John
https://t.co/UsfR6DafZt",
>>>
>>> "@Subtronics just went back and rewatched ur FBlice with ur
CDJs and let
>>> me
>>> tell you man. You are the fucking messiah",
>>>
>>> "@ic4rus1 Opportunistic means short-game. As in getting drunk
now vs. not
>>> being hung over tomorrow vs. not fucking up your life ten years
later.",
>>>
>>> "I tend to think about my dreams before I sleep.",
"@MichaelAvenatti
>>> @SenatorCollins So,  if your client was in her 20s, attending
parties
>>> with
>>> teenagers, doesn't that make her at the least immature as hell,
or at the
>>> worst, a pedophile and a person contributing to the delinquency of
>>> minors?",
>>>
>>>
>>> "i wish i could take credit for this"), lat =
c(43.6835853, 40.284123,
>>>
>>> 37.7706565, 40.431389, 31.1688935, 33.9376735), lng =
c(-70.3284118,
>>>
>>> -83.078589, -122.4359785, -79.9806895, -100.0768885, -118.130426
>>>
>>> ), county_name = c("Cumberland County", "Delaware
County", "San Francisco
>>> County",
>>>
>>> "Allegheny County", "Concho County", "Los
Angeles County"), fips >>> c(23005L,
>>>
>>>
>>> 39041L, 6075L, 42003L, 48095L, 6037L), state_name =
c("Maine",
>>>
>>> "Ohio", "California", "Pennsylvania",
"Texas", "California"),
>>>
>>>     state_abb = c("ME", "OH", "CA",
"PA", "TX", "CA"), urban_level >>>
c("Medium Metro",
>>>
>>>     "Large Fringe Metro", "Large Central
Metro", "Large Central Metro",
>>>
>>>     "NonCore (Nonmetro)", "Large Central
Metro"), urban_code = c(3L,
>>>
>>>     2L, 1L, 1L, 6L, 1L), population = c(277308L, 184029L, 830781L,
>>>
>>>     1160433L, 4160L, 9509611L)), class = "data.frame",
row.names = c(NA,
>>>
>>> -6L))
>>>
>>>
>>> st <- structure(list(terms = c("me abused depressed",
"me hurt
>>> depressed",
>>>
>>> "feel hopeless depressed", "feel alone
depressed", "i feel helpless",
>>>
>>> "i feel worthless")), row.names = c(NA, -6L), class =
c("tbl_df",
>>>
>>> "tbl", "data.frame"))
>>>
>>> On Tue, Oct 16, 2018 at 2:39 PM Nathan Parsons <
>>> nathan.f.parsons at gmail.com>
>>> wrote:
>>>
>>> > Thanks all for your patience. Here?s a second go that is
perhaps more
>>> > explicative of what it is I am trying to accomplish (and
hopefully in
>>> plain
>>> > text form)...
>>> >
>>> >
>>> > I?m using the following packages: tidyverse, purrr, tidytext
>>> >
>>> >
>>> > I have a number of tweets in the following form:
>>> >
>>> >
>>> > th <- structure(list(status_id =
c("x1047841705729306624",
>>> > "x1046966595610927105",
>>> >
>>> > "x1047094786610552832",
"x1046988542818308097", "x1046934493553221632",
>>> >
>>> > "x1047227442899775488"), created_at =
c("2018-10-04T13:31:45Z",
>>> >
>>> > "2018-10-02T03:34:22Z",
"2018-10-02T12:03:45Z", "2018-10-02T05:01:35Z",
>>> >
>>> > "2018-10-02T01:26:49Z",
"2018-10-02T20:50:53Z"), text = c("Technique is
>>> > everything with olympic lifts ! @ Body By John
https://t.co/UsfR6DafZt
>>> ",
>>> >
>>> > "@Subtronics just went back and rewatched ur FBlice with
ur CDJs and
>>> let
>>> > me tell you man. You are the fucking messiah",
>>> >
>>> > "@ic4rus1 Opportunistic means short-game. As in getting
drunk now vs.
>>> not
>>> > being hung over tomorrow vs. not fucking up your life ten
years
>>> later.",
>>> >
>>> > "I tend to think about my dreams before I sleep.",
"@MichaelAvenatti
>>> > @SenatorCollins So, if your client was in her 20s, attending
parties
>>> with
>>> > teenagers, doesn't that make her at the least immature as
hell, or at
>>> the
>>> > worst, a pedophile and a person contributing to the
delinquency of
>>> minors?",
>>> >
>>> > "i wish i could take credit for this"), lat =
c(43.6835853, 40.284123,
>>> >
>>> > 37.7706565, 40.431389, 31.1688935, 33.9376735), lng =
c(-70.3284118,
>>> >
>>> > -83.078589, -122.4359785, -79.9806895, -100.0768885,
-118.130426
>>> >
>>> > ), county_name = c("Cumberland County",
"Delaware County", "San
>>> Francisco
>>> > County",
>>> >
>>> > "Allegheny County", "Concho County",
"Los Angeles County"), fips >>> > c(23005L,
>>> >
>>> > 39041L, 6075L, 42003L, 48095L, 6037L), state_name =
c("Maine",
>>> >
>>> > "Ohio", "California",
"Pennsylvania", "Texas", "California"),
>>> >
>>> > state_abb = c("ME", "OH", "CA",
"PA", "TX", "CA"), urban_level >>>
c("Medium
>>> > Metro",
>>> >
>>> > "Large Fringe Metro", "Large Central
Metro", "Large Central Metro",
>>> >
>>> > "NonCore (Nonmetro)", "Large Central
Metro"), urban_code = c(3L,
>>> >
>>> > 2L, 1L, 1L, 6L, 1L), population = c(277308L, 184029L, 830781L,
>>> >
>>> > 1160433L, 4160L, 9509611L)), class = c("data.table",
"data.frame"
>>> >
>>> > ), row.names = c(NA, -6L), .internal.selfref = )
>>> >
>>> >
>>> > I also have a number of search terms in the following form:
>>> >
>>> >
>>> > st <- structure(list(terms = c("me abused
depressed", "me hurt
>>> depressed",
>>> >
>>> > "feel hopeless depressed", "feel alone
depressed", "i feel helpless",
>>> >
>>> > "i feel worthless")), row.names = c(NA, -6L), class
= c("tbl_df",
>>> >
>>> > "tbl", "data.frame?))
>>> >
>>> >
>>> > I am trying to isolate the tweets that contain all of the
words in
>>> each of
>>> > the search terms, i.e ?me? ?abused? and ?depressed? from the
first
>>> example
>>> > search term, but they do not have to be in order or even next
to one
>>> > another.
>>> >
>>> >
>>> > I am familiar with the dplyr suite of tools and have been
attempting to
>>> > generate some sort of ?filter()? to do this. I am not very
familiar
>>> with
>>> > purrr, but there may be a solution using the map function? I
have also
>>> > explored the tidytext ?unnest_tokens? function which
transforms the
>>> ?th?
>>> > data in the following way:
>>> >
>>> >
>>> > > tidytext::unnest_tokens(th, word, text, token =
"tweets") -> tt
>>> >
>>> > > head(tt)
>>> >
>>> > status_id created_at lat lng
>>> >
>>> > 1: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>> >
>>> > 2: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>> >
>>> > 3: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>> >
>>> > 4: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>> >
>>> > 5: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>> >
>>> > 6: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>> >
>>> > county_name fips state_name state_abb urban_level urban_code
>>> >
>>> > 1: Cumberland County 23005 Maine ME Medium Metro 3
>>> >
>>> > 2: Cumberland County 23005 Maine ME Medium Metro 3
>>> >
>>> > 3: Cumberland County 23005 Maine ME Medium Metro 3
>>> >
>>> > 4: Cumberland County 23005 Maine ME Medium Metro 3
>>> >
>>> > 5: Cumberland County 23005 Maine ME Medium Metro 3
>>> >
>>> > 6: Cumberland County 23005 Maine ME Medium Metro 3
>>> >
>>> > population word
>>> >
>>> > 1: 277308 technique
>>> >
>>> > 2: 277308 is
>>> >
>>> > 3: 277308 everything
>>> >
>>> > 4: 277308 with
>>> >
>>> > 5: 277308 olympic
>>> >
>>> > 6: 277308 lifts
>>> >
>>> >
>>> > but once I have unnested the tokens, I am unable to recombine
them back
>>> > into tweets.
>>> >
>>> >
>>> > Ideally the end result would append a new column to the ?th?
data that
>>> > would flag a tweet that contained all of the search words for
any of
>>> the
>>> > search terms; so the work flow would look like
>>> >
>>> > 1) look for all search words for one search term in a tweet
>>> >
>>> > 2) if all of the search words in the search term are found,
create a
>>> flag
>>> > (mutate(flag = 1) or some such)
>>> >
>>> > 3) do this for all of the tweets
>>> >
>>> > 4) move on the next search term and repeat
>>> >
>>> >
>>> > Again, my thanks for your patience.
>>> >
>>> >
>>> > --
>>> >
>>> >
>>> > Nate Parsons
>>> >
>>> > Pronouns: He, Him, His
>>> >
>>> > Graduate Teaching Assistant
>>> >
>>> > Department of Sociology
>>> >
>>> > Portland State University
>>> >
>>> > Portland, Oregon
>>> >
>>> >
>>> > 503-725-9025
>>> >
>>> > 503-725-3957 FAX
>>> >
>>>
>>>         [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more,
see
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>
	[[alternative HTML version deleted]]

Bert Gunter

2018-Oct-19 02:04 UTC

head link

[R] Matching multiple search criteria (Unlisting a nested dataset, take 2)

All (especially Nathan): **Please feel free to ignore this post without
response.** It just represents a bit of OCD-ness on my part that may or may
not be of interest to anyone else.

Purpose of this post: To give an alternative considerably simpler and
considerably faster solution to the problem than those which I offered
previously. It may or may not be what the OP asked for, but the improvement
exercise was instructive to me . Notation as previously in this thread.

New solution:

getwords <-
function(x)strsplit(gsub("(^[[:space:]]+)|([[:space:]]+)$)","",tolower(x)),split
= " +")
## split lower-cased text into a vector of "words"
## I made this a bit fancier to handle some "corner" cases, but the
previous simpler version may well suffice.

'%allin%' <- function(x, table)prod(match(x,table, nomatch = 0L))
> 0L
## a convenience function/operator that improves efficiency.

## lists of  search word vectors as before
phrasewords <- getwords(st$terms)
tweets <- getwords(c(th$text, " i xxxx worthless yxxc ght feel"))
## the
tweets + one additional

## simpler approach just using indexing for the bookkeeping that nested
_apply
## loops previously were used for
ans <- expand.grid(phrases = seq_along(phrasewords),tweets seq_along(tweets),
Result = FALSE)
ans$Result <- apply(ind,1,function(r)phrasewords[[r[1]]] %allin%
tweets[[r[2]]])

## ans is a data frame in which the first column indexes phrases and the
second tweets
## The ith row of ans$Result == TRUE iff all the words in the phrase
indexed by the ith row of the
##  phrase column are contained in the tweet indexed by that row's tweet
column.

This was way faster than my previous offerings.

Note also that just the matching phrases and tweets can be extracted as
usual by:
> ans[ans[,3],]   phrases tweets Result
42       6      7   TRUE
## all the words in the 6th search phrase appeared in the 7th tweet.

** I promise to natter on about this no longer! **

Cheers,
Bert


On Wed, Oct 17, 2018 at 7:50 PM Bert Gunter <bgunter.4567 at gmail.com>
wrote:
>
> If you wish to use R, you need to at least understand its basic data
> structures and functionality. Expecting that mimickry of code in special
> packages will suffice is, I believe, an illusion. If you haven't
already
> done so, you should go through a basic R tutorial or two (there are many on
> the web; some recommendations, by no means necessarily "the
best",  can be
> found here:
> https://www.rstudio.com/online-learning/#r-programming).
>
> Having said that, I realized that my previous "solution" using
regular
> expressions was more complicated than it needed to be and somewhat foolish
> ( so much for all my "expertise"). A simpler and better approach
is simply
> to break up both the tweet texts and your search phrases into vectors of
> their "words" (i.e. character strings surrounded by spaces) using
> strplit(), and then using R's built-in matching capabilities with %in%.
> This is quite straightforward, pretty robust (no regex's to wrestle
with),
> and does not require "herculean efforts" to understand. The only
wrinkle is
> some bookkeeping with the "apply" family of functions. These are,
as you
> may know, the functional programming way of handling iteration (loops), but
> they are what I would consider part of "basic" R functionality
and worth
> spending the time to learn about.
>
> Herewith my better, simpler proposal, using your example data as before:
>
> getwords <- function(x)strsplit(tolower(x),split = " +")
> ## split text into a vector of lower-cased "words"
>
> phrasewords <- structure(getwords(st$terms), names = st$terms)
> ## named list of your search word vectors
>
> tweets <- getwords(c(th$text, " i xxxx worthless yxxc ght
feel"))
> ## the tweets + one additional that should match the last phrase
>
> ans <- lapply(phrasewords, function(x) apply(sapply(tweets,function(y)x
> %in% y), 2, all))
> ## a list indexed by the search phrases,
> ## with each component a vector of logicals with vec[i] == TRUE iff
> ## the ith tweet contains all the words in the search phrase
>
> > ans
> $`me abused depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`me hurt depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`feel hopeless depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`feel alone depressed`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`i feel helpless`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>
> $`i feel worthless`
> [1] FALSE FALSE FALSE FALSE FALSE FALSE  TRUE
>
> -- Bert
>
> On Wed, Oct 17, 2018 at 9:20 AM Nathan Parsons <nathan.f.parsons at
gmail.com>
> wrote:
>
>> I do not have your command of base r, Bert. That is a herculean effort!
>> Here?s what I spent my night putting together:
>>
>> ## Create search terms
>> ## dput(st)
>> st <- structure(list(word1 = c("technique",
"me", "me", "feel", "feel"
>> ), word2 = c("olympic", "abused", "hurt",
"hopeless", "alone"
>> ), word3 = c("lifts", "depressed",
"depressed", "depressed",
>> "depressed")), class = c("tbl_df", "tbl",
"data.frame"), row.names = c(NA,
>> -5L))
>>
>> ## Create tweets
>> ## dput(th)
>> th <- structure(list(status_id = c("x1047841705729306624",
>> "x1046966595610927105",
>> "x1047094786610552832", "x1046988542818308097",
"x1046934493553221632",
>> "x1047227442899775488", "x1048126008941981696",
"x1047798782673543173",
>> "x1048269727582355457", "x1048092408544677890"),
created_at >> c("2018-10-04T13:31:45Z",
>> "2018-10-02T03:34:22Z", "2018-10-02T12:03:45Z",
"2018-10-02T05:01:35Z",
>> "2018-10-02T01:26:49Z", "2018-10-02T20:50:53Z",
"2018-10-05T08:21:28Z",
>> "2018-10-04T10:41:11Z", "2018-10-05T17:52:33Z",
"2018-10-05T06:07:57Z"
>> ), text = c("technique is everything with olympic lifts ! @ body
by john
>> ",
>> "@subtronics just went back and rewatched ur fblice with ur cdjs
and let
>> me tell you man. you are the fucking messiah",
>> "@ic4rus1 opportunistic means short-game. as in getting drunk now
vs. not
>> being hung over tomorrow vs. not fucking up your life ten years
later.",
>> "i tend to think about my dreams before i sleep.",
"@michaelavenatti
>> @senatorcollins so if your client was in her 20s attending parties with
>> teenagers doesnt that make her at the least immature as hell or at the
>> worst a pedophile and a person contributing to the delinquency of
minors?",
>> "i wish i could take credit for this", "i woulda never
imagined.
>> #lakeshow ",
>> "@philipbloom @blackmagic_news its ok phil! i feel your pain!
",
>> "sunday ill have a booth in katy at the real craft wives of katy
fest
>> @nolabelbrewco cmon yall!everything is better when you top it with
>> tias!order today we ship to all 50 ",
>> "dolly is so baddd"), lat = c(43.6835853, 40.284123,
37.7706565,
>> 40.431389, 31.1688935, 33.9376735, 34.0207895, 44.900818, 29.7926,
>> 32.364145), lng = c(-70.3284118, -83.078589, -122.4359785, -79.9806895,
>> -100.0768885, -118.130426, -118.4119065, -89.5694915, -95.8224,
>> -86.2447285), county_name = c("Cumberland County",
"Delaware County",
>> "San Francisco County", "Allegheny County",
"Concho County",
>> "Los Angeles County", "Los Angeles County",
"Marathon County",
>> "Harris County", "Montgomery County"), fips =
c(23005L, 39041L,
>> 6075L, 42003L, 48095L, 6037L, 6037L, 55073L, 48201L, 1101L),
>> state_name = c("Maine", "Ohio",
"California", "Pennsylvania",
>> "Texas", "California", "California",
"Wisconsin", "Texas",
>> "Alabama"), state_abb = c("ME", "OH",
"CA", "PA", "TX", "CA",
>> "CA", "WI", "TX", "AL"),
urban_level = c("Medium Metro",
>> "Large Fringe Metro", "Large Central Metro",
"Large Central Metro",
>> "NonCore (Nonmetro)", "Large Central Metro",
"Large Central Metro",
>> "Small Metro", "Large Central Metro", "Medium
Metro"), urban_code = c(3L,
>> 2L, 1L, 1L, 6L, 1L, 1L, 4L, 1L, 3L), population = c(277308L,
>> 184029L, 830781L, 1160433L, 4160L, 9509611L, 9509611L, 127612L,
>> 4233913L, 211037L), linenumber = 1:10), row.names = c(NA,
>> 10L), class = "data.frame")
>>
>> ## Clean tweets - basically just remove everything we don?t need from
the
>> text including punctuation and urls
>> th %>%
>> mutate(linenumber = row_number(),
>> text = str_remove_all(text, "[^\x01-\x7F]"),
>> text = str_remove_all(text, "\n"),
>> text = str_remove_all(text, ","),
>> text = str_remove_all(text, "'"),
>> text = str_remove_all(text, "&"),
>> text = str_remove_all(text, "<"),
>> text = str_remove_all(text, ">"),
>> text = str_remove_all(text, "http[s]?://[[:alnum:].\\/]+"),
>> text = tolower(text)) -> th
>>
>> ## Create search function that looks for each search term in the
provided
>> string, evaluates if all three search terms have been found, and
returns a
>> logical
>> srchr <- function(df) {
>> str_detect(df, "olympic") -> a
>> str_detect(df, "technique") -> b
>> str_detect(df, "lifts") -> c
>> ifelse(a == TRUE & b == TRUE & c == TRUE, TRUE, FALSE)
>> }
>>
>> ## Evaluate tweets for presence of search term
>> th %>%
>> mutate(flag = map_chr(text, srchr)) -> th_flagged
>>
>> As far as I can tell, this works. I have to manually enter each set of
>> search terms into the function, which is not ideal. Also, this only
>> generates a True/False for each tweet based on one search term - I end
up
>> with an evaluatory column for each search term that I would then have
to
>> collapse together somehow. I?m sure there?s a more elegant solution.
>>
>> --
>>
>> Nate Parsons
>> Pronouns: He, Him, His
>> Graduate Teaching Assistant
>> Department of Sociology
>> Portland State University
>> Portland, Oregon
>>
>> 503-725-9025
>> 503-725-3957 FAX
>> On Oct 16, 2018, 7:20 PM -0700, Bert Gunter <bgunter.4567 at
gmail.com>,
>> wrote:
>>
>> OK, as no one else has offered a solution, I'll take a whack at it.
>>
>> Caveats: This is a brute force attempt using R's basic regular
expression
>> engine. It is inelegant and barely tested, so likely to be at best
>> incomplete and buggy, and at worst, incorrect. But maybe Nathan or
someone
>> else on the list can fix it up. So if (when) it breaks, complain on the
>> list to give someone (almost certainly not me) the opportunity.
>>
>> The basic idea is that the tweets are just character strings and the
>> search phrases are just character vectors all of whose elements must
match
>> "appropriately" -- i.e. they must match whole words -- in the
character
>> strings. So my desired output from the code is a list indexed by the
search
>> phrases, each of whose components if a logical vector of length the
number
>> of tweets each of whose elements = TRUE iff all the words in the search
>> phrase match somewhere in the tweet.
>>
>> Here's the code(using the data Nathan provided):
>>
>> > words <- sapply(st[[1]],strsplit,split = " +" )
>> ## convert the phrases to a list of character vectors of the words
>> ## Result:
>> > words
>> $`me abused depressed`
>> [1] "me"        "abused"    "depressed"
>>
>> $`me hurt depressed`
>> [1] "me"        "hurt"      "depressed"
>>
>> $`feel hopeless depressed`
>> [1] "feel"      "hopeless"  "depressed"
>>
>> $`feel alone depressed`
>> [1] "feel"      "alone"     "depressed"
>>
>> $`i feel helpless`
>> [1] "i"        "feel"     "helpless"
>>
>> $`i feel worthless`
>> [1] "i"         "feel"      "worthless"
>>
>> > expand.words <- 
function(z)lapply(z,function(x)paste0(c("^ *"," ","
>> "),x, c(" "," "," *$")))
>> ## function to create regexes for words when they are at the beginning,
>> middle, or end of tweets
>>
>> > wordregex <- lapply(words,expand.words)
>> ##Result
>> ## too lengthy to include
>> ##
>> > tweets <- th$text
>> ##extract the tweets
>> > findin <- function(x,y)
>>    ## x is a vector of regex patterns
>>    ## y is a character vector
>>    ## value = vector,vec, with length(vec) == length(y) and vec[i]
=>> TRUE iff any of x matches y[i]
>> { apply(sapply(x,function(z)grepl(z,y)), 1,any)
>> }
>>
>> ## add a matching "tweet" to the tweet vector:
>> > tweets <- c(tweets," i xxxx worthless yxxc ght feel")
>>
>> > ans <-
>>
lapply(wordregex,function(z)apply(sapply(z,function(x)findin(x,tweets)), 1,
>> all))
>> ## Result:
>> > ans
>> $`me abused depressed`
>> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>>
>> $`me hurt depressed`
>> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>>
>> $`feel hopeless depressed`
>> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>>
>> $`feel alone depressed`
>> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>>
>> $`i feel helpless`
>> [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE
>>
>> $`i feel worthless`
>> [1] FALSE FALSE FALSE FALSE FALSE FALSE  TRUE
>>
>> ## None of the tweets match any of the phrases except for the last
tweet
>> that I added.
>>
>> ## Note: you need to add capabilities to handle upper and lower case.
>> See, e.g. ?casefold
>>
>> Cheers,
>> Bert
>>
>> Bert Gunter
>>
>> "The trouble with having an open mind is that people keep coming
along
>> and sticking things into it."
>> -- Opus (aka Berkeley Breathed in his "Bloom County" comic
strip )
>>
>>
>> On Tue, Oct 16, 2018 at 3:03 PM Bert Gunter <bgunter.4567 at
gmail.com>
>> wrote:
>>
>>> The problem wasn't the data tibbles. You posted in html --
which you
>>> were explictly warned against -- and that corrupted your text (e.g.
some
>>> quotes became "smart quotes", which cannot be properly
cut and pasted into
>>> R).
>>>
>>> Bert
>>>
>>>
>>> On Tue, Oct 16, 2018 at 2:47 PM Nathan Parsons <
>>> nathan.f.parsons at gmail.com> wrote:
>>>
>>>> Argh! Here are those two example datasets as data frames (not
tibbles).
>>>> Sorry again. This apparently is just not my day.
>>>>
>>>>
>>>> th <- structure(list(status_id =
c("x1047841705729306624",
>>>> "x1046966595610927105",
>>>>
>>>> "x1047094786610552832",
"x1046988542818308097", "x1046934493553221632",
>>>>
>>>> "x1047227442899775488"), created_at =
c("2018-10-04T13:31:45Z",
>>>>
>>>> "2018-10-02T03:34:22Z",
"2018-10-02T12:03:45Z", "2018-10-02T05:01:35Z",
>>>>
>>>> "2018-10-02T01:26:49Z",
"2018-10-02T20:50:53Z"), text = c("Technique is
>>>> everything with olympic lifts ! @ Body By John
https://t.co/UsfR6DafZt
>>>> ",
>>>>
>>>> "@Subtronics just went back and rewatched ur FBlice with
ur CDJs and
>>>> let me
>>>> tell you man. You are the fucking messiah",
>>>>
>>>> "@ic4rus1 Opportunistic means short-game. As in getting
drunk now vs.
>>>> not
>>>> being hung over tomorrow vs. not fucking up your life ten years
later.",
>>>>
>>>> "I tend to think about my dreams before I sleep.",
"@MichaelAvenatti
>>>> @SenatorCollins So,  if your client was in her 20s, attending
parties
>>>> with
>>>> teenagers, doesn't that make her at the least immature as
hell, or at
>>>> the
>>>> worst, a pedophile and a person contributing to the delinquency
of
>>>> minors?",
>>>>
>>>>
>>>> "i wish i could take credit for this"), lat =
c(43.6835853, 40.284123,
>>>>
>>>> 37.7706565, 40.431389, 31.1688935, 33.9376735), lng =
c(-70.3284118,
>>>>
>>>> -83.078589, -122.4359785, -79.9806895, -100.0768885,
-118.130426
>>>>
>>>> ), county_name = c("Cumberland County",
"Delaware County", "San
>>>> Francisco
>>>> County",
>>>>
>>>> "Allegheny County", "Concho County",
"Los Angeles County"), fips >>>> c(23005L,
>>>>
>>>>
>>>> 39041L, 6075L, 42003L, 48095L, 6037L), state_name =
c("Maine",
>>>>
>>>> "Ohio", "California",
"Pennsylvania", "Texas", "California"),
>>>>
>>>>     state_abb = c("ME", "OH",
"CA", "PA", "TX", "CA"), urban_level
>>>> c("Medium Metro",
>>>>
>>>>     "Large Fringe Metro", "Large Central
Metro", "Large Central Metro",
>>>>
>>>>     "NonCore (Nonmetro)", "Large Central
Metro"), urban_code = c(3L,
>>>>
>>>>     2L, 1L, 1L, 6L, 1L), population = c(277308L, 184029L,
830781L,
>>>>
>>>>     1160433L, 4160L, 9509611L)), class =
"data.frame", row.names = c(NA,
>>>>
>>>> -6L))
>>>>
>>>>
>>>> st <- structure(list(terms = c("me abused
depressed", "me hurt
>>>> depressed",
>>>>
>>>> "feel hopeless depressed", "feel alone
depressed", "i feel helpless",
>>>>
>>>> "i feel worthless")), row.names = c(NA, -6L), class =
c("tbl_df",
>>>>
>>>> "tbl", "data.frame"))
>>>>
>>>> On Tue, Oct 16, 2018 at 2:39 PM Nathan Parsons <
>>>> nathan.f.parsons at gmail.com>
>>>> wrote:
>>>>
>>>> > Thanks all for your patience. Here?s a second go that is
perhaps more
>>>> > explicative of what it is I am trying to accomplish (and
hopefully in
>>>> plain
>>>> > text form)...
>>>> >
>>>> >
>>>> > I?m using the following packages: tidyverse, purrr,
tidytext
>>>> >
>>>> >
>>>> > I have a number of tweets in the following form:
>>>> >
>>>> >
>>>> > th <- structure(list(status_id =
c("x1047841705729306624",
>>>> > "x1046966595610927105",
>>>> >
>>>> > "x1047094786610552832",
"x1046988542818308097",
>>>> "x1046934493553221632",
>>>> >
>>>> > "x1047227442899775488"), created_at =
c("2018-10-04T13:31:45Z",
>>>> >
>>>> > "2018-10-02T03:34:22Z",
"2018-10-02T12:03:45Z",
>>>> "2018-10-02T05:01:35Z",
>>>> >
>>>> > "2018-10-02T01:26:49Z",
"2018-10-02T20:50:53Z"), text = c("Technique
>>>> is
>>>> > everything with olympic lifts ! @ Body By John
>>>> https://t.co/UsfR6DafZt",
>>>> >
>>>> > "@Subtronics just went back and rewatched ur FBlice
with ur CDJs and
>>>> let
>>>> > me tell you man. You are the fucking messiah",
>>>> >
>>>> > "@ic4rus1 Opportunistic means short-game. As in
getting drunk now vs.
>>>> not
>>>> > being hung over tomorrow vs. not fucking up your life ten
years
>>>> later.",
>>>> >
>>>> > "I tend to think about my dreams before I
sleep.", "@MichaelAvenatti
>>>> > @SenatorCollins So, if your client was in her 20s,
attending parties
>>>> with
>>>> > teenagers, doesn't that make her at the least immature
as hell, or at
>>>> the
>>>> > worst, a pedophile and a person contributing to the
delinquency of
>>>> minors?",
>>>> >
>>>> > "i wish i could take credit for this"), lat =
c(43.6835853, 40.284123,
>>>> >
>>>> > 37.7706565, 40.431389, 31.1688935, 33.9376735), lng =
c(-70.3284118,
>>>> >
>>>> > -83.078589, -122.4359785, -79.9806895, -100.0768885,
-118.130426
>>>> >
>>>> > ), county_name = c("Cumberland County",
"Delaware County", "San
>>>> Francisco
>>>> > County",
>>>> >
>>>> > "Allegheny County", "Concho County",
"Los Angeles County"), fips >>>> > c(23005L,
>>>> >
>>>> > 39041L, 6075L, 42003L, 48095L, 6037L), state_name =
c("Maine",
>>>> >
>>>> > "Ohio", "California",
"Pennsylvania", "Texas", "California"),
>>>> >
>>>> > state_abb = c("ME", "OH",
"CA", "PA", "TX", "CA"), urban_level
>>>> c("Medium
>>>> > Metro",
>>>> >
>>>> > "Large Fringe Metro", "Large Central
Metro", "Large Central Metro",
>>>> >
>>>> > "NonCore (Nonmetro)", "Large Central
Metro"), urban_code = c(3L,
>>>> >
>>>> > 2L, 1L, 1L, 6L, 1L), population = c(277308L, 184029L,
830781L,
>>>> >
>>>> > 1160433L, 4160L, 9509611L)), class =
c("data.table", "data.frame"
>>>> >
>>>> > ), row.names = c(NA, -6L), .internal.selfref = )
>>>> >
>>>> >
>>>> > I also have a number of search terms in the following
form:
>>>> >
>>>> >
>>>> > st <- structure(list(terms = c("me abused
depressed", "me hurt
>>>> depressed",
>>>> >
>>>> > "feel hopeless depressed", "feel alone
depressed", "i feel helpless",
>>>> >
>>>> > "i feel worthless")), row.names = c(NA, -6L),
class = c("tbl_df",
>>>> >
>>>> > "tbl", "data.frame?))
>>>> >
>>>> >
>>>> > I am trying to isolate the tweets that contain all of the
words in
>>>> each of
>>>> > the search terms, i.e ?me? ?abused? and ?depressed? from
the first
>>>> example
>>>> > search term, but they do not have to be in order or even
next to one
>>>> > another.
>>>> >
>>>> >
>>>> > I am familiar with the dplyr suite of tools and have been
attempting
>>>> to
>>>> > generate some sort of ?filter()? to do this. I am not very
familiar
>>>> with
>>>> > purrr, but there may be a solution using the map function?
I have also
>>>> > explored the tidytext ?unnest_tokens? function which
transforms the
>>>> ?th?
>>>> > data in the following way:
>>>> >
>>>> >
>>>> > > tidytext::unnest_tokens(th, word, text, token =
"tweets") -> tt
>>>> >
>>>> > > head(tt)
>>>> >
>>>> > status_id created_at lat lng
>>>> >
>>>> > 1: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>>> >
>>>> > 2: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>>> >
>>>> > 3: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>>> >
>>>> > 4: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>>> >
>>>> > 5: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>>> >
>>>> > 6: x1047841705729306624 2018-10-04T13:31:45Z 43.68359
-70.32841
>>>> >
>>>> > county_name fips state_name state_abb urban_level
urban_code
>>>> >
>>>> > 1: Cumberland County 23005 Maine ME Medium Metro 3
>>>> >
>>>> > 2: Cumberland County 23005 Maine ME Medium Metro 3
>>>> >
>>>> > 3: Cumberland County 23005 Maine ME Medium Metro 3
>>>> >
>>>> > 4: Cumberland County 23005 Maine ME Medium Metro 3
>>>> >
>>>> > 5: Cumberland County 23005 Maine ME Medium Metro 3
>>>> >
>>>> > 6: Cumberland County 23005 Maine ME Medium Metro 3
>>>> >
>>>> > population word
>>>> >
>>>> > 1: 277308 technique
>>>> >
>>>> > 2: 277308 is
>>>> >
>>>> > 3: 277308 everything
>>>> >
>>>> > 4: 277308 with
>>>> >
>>>> > 5: 277308 olympic
>>>> >
>>>> > 6: 277308 lifts
>>>> >
>>>> >
>>>> > but once I have unnested the tokens, I am unable to
recombine them
>>>> back
>>>> > into tweets.
>>>> >
>>>> >
>>>> > Ideally the end result would append a new column to the
?th? data that
>>>> > would flag a tweet that contained all of the search words
for any of
>>>> the
>>>> > search terms; so the work flow would look like
>>>> >
>>>> > 1) look for all search words for one search term in a
tweet
>>>> >
>>>> > 2) if all of the search words in the search term are
found, create a
>>>> flag
>>>> > (mutate(flag = 1) or some such)
>>>> >
>>>> > 3) do this for all of the tweets
>>>> >
>>>> > 4) move on the next search term and repeat
>>>> >
>>>> >
>>>> > Again, my thanks for your patience.
>>>> >
>>>> >
>>>> > --
>>>> >
>>>> >
>>>> > Nate Parsons
>>>> >
>>>> > Pronouns: He, Him, His
>>>> >
>>>> > Graduate Teaching Assistant
>>>> >
>>>> > Department of Sociology
>>>> >
>>>> > Portland State University
>>>> >
>>>> > Portland, Oregon
>>>> >
>>>> >
>>>> > 503-725-9025
>>>> >
>>>> > 503-725-3957 FAX
>>>> >
>>>>
>>>>         [[alternative HTML version deleted]]
>>>>
>>>> ______________________________________________
>>>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and
more, see
>>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>>> PLEASE do read the posting guide
>>>> http://www.R-project.org/posting-guide.html
>>>> and provide commented, minimal, self-contained, reproducible
code.
>>>>
>>>
	[[alternative HTML version deleted]]

R help - Oct 2018 - Matching multiple search criteria (Unlisting a nested dataset, take 2)

[R] Matching multiple search criteria (Unlisting a nested dataset, take 2)

[R] Matching multiple search criteria (Unlisting a nested dataset, take 2)

[R] Matching multiple search criteria (Unlisting a nested dataset, take 2)