Displaying 20 results from an estimated 11000 matches similar to: "Dump the "source code" of data frame"
2009 Oct 28
3
variable labels to accompany data.frame
Often it is useful to keep a "codebook" to document the contents of a dataset. (By "dataset" I mean
a rectangular structure such as a dataframe.)
The codebook has as many rows as the dataset has columns (variables, fields). The columns (fields)
of the codebook may include:
? variable name
? type (character, factor, integer, etc)
? variable label
2005 Mar 16
1
Note: "The default device has been opened to honour attempt to modify trellis settings"
R-help,
I'm using a function whose end result is a trellis plot.
When I call the function I get sometimes the following message:
"Note: The default device has been opened to honour attempt to modify
trellis settings "
leading up to any plot whatsoever.
I call the package 'lattice' within the function and 'detach' after
plotting.
I have to close the graphics
2006 Jun 29
1
Question on memory allocation & loop
Hello All,
I am trying to work on writing the following piece of (pseudo)
code in an optimal fashion:
----------------------------------------------------
# Two data frames with some data
a = data.frame(somedata)
b = data.frame(somedata)
for(i in 1:nrow(dt) {
# Merge dates for a given date into a new data frame
c = merge(a[a$dt==dt[i],),b[b$dt == dt[i],], by=c(some column));
}
2013 Sep 23
2
[LLVMdev] LLVM ERROR: expected relocatable expression
Hi Eli,
Slightly changed the example :-
.section somedata
.Ltmpa:
.word 100
.Ltmpb:
.word 60
.Ltmpc:
.word 40
.Ltmpd:
.word (.Ltmpa-.Ltmpb)-.Ltmpc
The GNU assembler properly handles the above.
$as -c x.s -o x.o
$readelf -x 4 x.o
Hex dump of section 'somedata':
NOTE: This section has relocations against it, but these have NOT been
applied to this dump.
0x00000000 64003c00
2012 Jul 23
2
Large data set
Hi all,
Have a problem. Trying to read in a data set that has about 112,000,000
rows and 8 columns and obviously enough it was too big for R to handle. The
columns are mode up of 2 integer columns and 6 logical columns. The text
file is about 4.2 Gb in size. Also I have 4 Gb of RAM and 218 Gb of
available space on the hard drive. I tried the dumpDF function but it was
too big. Also tried bring in
2013 Sep 23
0
[LLVMdev] LLVM ERROR: expected relocatable expression
On Sun, Sep 22, 2013 at 9:43 PM, Shankar Easwaran
<shankare at codeaurora.org>wrote:
> Hi Eli,
>
> Slightly changed the example :-
>
> .section somedata
> .Ltmpa:
> .word 100
> .Ltmpb:
> .word 60
> .Ltmpc:
> .word 40
> .Ltmpd:
> .word (.Ltmpa-.Ltmpb)-.Ltmpc
>
> The GNU assembler properly handles the above.
>
> $as -c x.s -o x.o
>
2005 Dec 24
2
grouping data
Hello R-users/experts,
I am new to R-
I have a simple question:
Let say I have a data set as follows
temp:[file attached]
the data structure is a follows:
sex age
female 28
female 53
female 53
female 36
male 42
male 29
male 43
male 36
male 41
Here we are grouping all male value into male and all female value in to
female
2008 Jul 18
2
column wise paste of data.frames
Hi everybody!
I'm sure that I overlook something and feel quite stupid to ask, but I
have not found an easy solution to the following problem: Take e.g. the
Orthodont data from the nlme package:
> head(Orthodont)
Grouped Data: distance ~ age | Subject
distance age Subject Sex
1 26.0 8 M01 Male
2 25.0 10 M01 Male
3 29.0 12 M01 Male
4 31.0 14 M01 Male
2010 May 01
2
Average Login based on date
Hi All,
I have the data like this :
>sample <- read.csv(file="sample.csv",sep=",",header=TRUE)
> sample
stdate Domain sex age Login
1 01/11/09 xxx FeMale 25 2
2 01/11/09 xxx FeMale 35 4
3 01/11/09 xxx Male 18 30
4 01/11/09 xxx Male 31 3
5 02/11/09 xxx Male 32 11
6 02/11/09 xxx Male 31 1
7 02/11/09
2011 Feb 09
3
Need help merging two dataframes
Hi R users,
I am trying to extract some attributes (age, sex, area) from dataframe "AB"
that has 101,269 observations of 28 variables to dataframe "t2" that has 47
observations of 6 variables. They share a column called "id", which is a
factor with 47 levels. I want to end up with a dataframe that has 47
observations of 9 variables (the original 6 variables of t2,
2010 May 07
2
extract required data from already read data
Hi all,
I have data like this:
>sample <- read.csv(file="sample.csv",sep=",",header=TRUE)
> sample
stdate Domain sex age Login
1 01/11/09 xxx FeMale 25 2
2 01/11/09 xxx FeMale 35 4
3 01/11/09 xxx Male 18 30
4 01/11/09 xxx Male 31 3
5 02/11/09 xxx Male 32 11
6 02/11/09 xxx Male 31 1
7 02/11/09
2011 Oct 20
1
effect function in the effects package
Dear r-help listers,
I am using effects to produce an effect plot after the proportional
odds logistic regression model. There is no problem for me to estimate
the model, but when it comes to the graphing, I was stuck. see the
codes below:
##############################################################################
myologit <- polr(factor(warm) ~ yr89 + male + white + age + ed + prst,
+
2009 Jan 17
2
data.frame: how to extract parts
Hi,
I have a problem with the R syntax.
It's perhaps pretty simple, but I don't understand it ...
I can extract a column from a data.frame with the following code for
example ...
b$row1[b$row1 == "male"]
so I see all male-entries.
But I cannot extract all lines of a data.frame depending on this
criterium;
only.male <- b[b$row1 == "male"]
With that, I
2010 Jul 31
3
I have a problem
dear£º
in the example£¨nomogram£©£¬I don't understand the meanings of the program which have been marked by red line.And how to compile the program(L <- .4*(sex=='male') + .045*(age-50) +
(log(cholesterol - 10)-5.2)*(-2*(sex=='female') + 2*(sex=='male'))).
n <- 1000 # define sample size
set.seed(17) # so can reproduce the results
age <- rnorm(n, 50, 10)
2011 Oct 19
1
hypothetical prediction after polr
Dear R-Help listers,
I am trying to estimate an proportional odds logistic regression model
(or ordered logistic regression) and then make predictions by
supplying a hypothetical x vector. However, somehow this does not
work. I guess I must have missed something here. I first used the polr
function in the MASS package, and I create a data frame and supply it
to the predict function (see below):
2005 Dec 20
1
Help to find only one class and differennt class
Dear R users,
I have a problem, which I can not find a solution.
Probably someone could help me?
I have a result from my classification, like this
> credit.toy
[[1]]
age married ownhouse income gender class
1 20-30 no no low male good
2 40-50 no yes medium female good
[[2]]
age married ownhouse income gender class
1 20-30 yes yes high male
2005 Jun 25
1
Confidence interval bars on Lattice barchart with groups
I am trying to add confidence (error) bars to lattice barcharts (and
dotplots, and xyplots). I found this helpful message from Deepayan
Sarkar and based teh code below on it:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/50299.html
However, I can't get it to work with groups, as illustrated. I am sure I
am missing something elementary, but I am unsure what.
Using R 2.1.1 on various
2005 Nov 12
1
how to make automatically each level from data.frame to vector
Dear R-helpers,
Suppose I have dataset like this below:
data(HairEyeColor)
dfHEC <- as.data.frame(as.table(HairEyeColor))
my.dfHEC <- data.frame(Hair=rep(dfHEC$Hair,dfHEC$Freq),
Eye=rep(dfHEC$Eye,dfHEC$Freq),
Sex=rep(dfHEC$Sex,dfHEC$Freq))
my.dfHEC
my.dfHEC$Hair
my.dfHEC$Eye
my.dfHEC$Sex
and I know all levels for Hair, Eye and Sex.
In my case, I
2004 Jun 22
1
Grouped AND stacked bar charts possible in R?
Good day all,
My statisticians want an R procedure that will produce grouped stacked
barplots. Barplot will
stack or group, but not both. The ftable function can produce a table
of the exact form they want, but the barplot doesn't show all the
divisions we want.
For an example, here's the sample from the help file for "ftable:"
data(Titanic)
ftable(Titanic, row.vars = 1:3)
2007 Feb 09
1
Using variable names in for loops - Generating plots semi-automatically from a series of variables Partly solved
Hi,
This code is trying to produce a series of graphics files, with plots
of male and female disease rates by age, one plot per disease. The
dataframe contains a variable 'Age' and a set of variables called
'Male_CVD, Female_CVD,Male_RTA,Female_RTA, and so on. For each
disease, I want to pull out the column of data containing the word
'Male' and plot this against age, and then