similar to: ActiveRecord - find

Hi, I have a dataframe column from which I want to calculate the number of 1's in each entry. Some column values could, for example, be "0001001000" and "11110000111". To get the number of occurrences from a string I use this: sum(unlist(strsplit(mydata[,"my_column"], "")) == "1") However, as my data is not in string form.. How do I convert

Hi All I''m trying to combine the from_for and select helpers Right now I have form_for :service, :url => ...... do |f| select("abc", "xyz_id", @my_arr.collect {|item| [ item, "bla" ] }, {:prompt => "opt1"} ) .... end What I want to do is something like .... f.select("abc", "xyz_id", @my_arr.collect {|item|

Hello, So I''ve realized one of the columns in a table has to be binary instead of text. However, a straightforward change_column :my_table, :my_column, :binary fails under PostgreSQL (9.x series) The error message being: PGError: ERROR: column "my_column" cannot be cast to type bytea : ALTER TABLE "my_table" ALTER COLUMN "my_column" TYPE bytea Now

Just wondering if rails has a method to look for an existing record and return it, but if it''s not existing then create a new record. (i.e. "FIND EXISTING OR CREATE NEW IF NONE FOUND"?) Then when finished updating one could use the existing "save" method which caters for either a new or updated record already Thanks

Hi- I am trying to use AJAX calls to login and logout of my Rails app so that the form renders in the side bar when you are not logged in, and your "profile" renders if you are. It all works, but when you logout, and try and log back in, you get "ActionController::InvalidAuthenticityToken", in the development.log. What does this mean, I can''t figure out how to fix

Hi... I want to know the equivalent instructions to insert, update, search and delete a registry. I know Rails can do it easily Thanks to ActiveRecord, but here''s the catch: I''m using PostgreSQL. As I''m using SQL to do the migration (Including the foreign keys), I need to know if I can use SQL queries to do those actions. Is there an example out there? I uncommented

Hi I observed an interesting behavior of R. Can you find where is the bug, or it is not a bug but made deliberately. - Hide quoted text - > arr = c(); #defined the empty array > a= c("x1", "x2"); > b = c("y1", "y2"); > arr = rbind(arr,a); #row bind the first character array -a > arr =

If I have a form similar to the one below, and ''start'' is a "string" field in my Database. Is there a way to take all of the date/time params and put them into ''start'' without too much hacking? I would like this to be as clean as possible. <p><label for="start_time">Start Time</label><br/> <%=

On 06.12.2016 09:32, Toni Mattila wrote: > Hi, > > On 05-Dec-16 20:28, Toni Mattila wrote: >> Panicing stopped when all index files where deleted. > > It happens again in same user account, so rebuilding indexes didn't > fix it. > > Here's bt full instead of just bt: > #0 0x001d4402 in __kernel_vsyscall () > No symbol table info available. > #1

> On Jun 8, 2018, at 11:52 AM, Hadley Wickham <h.wickham at gmail.com> wrote: > > On Fri, Jun 8, 2018 at 11:38 AM, Berry, Charles <ccberry at ucsd.edu> wrote: >> >> >>> On Jun 8, 2018, at 10:37 AM, Herv? Pag?s <hpages at fredhutch.org> wrote: >>> >>> Also the TRUEs cause problems if some dimensions are 0: >>>

I just have two questions regarding the following small piece of code: if (var > start*end) { arr[var] = arr[var-1]; } else { arr[var] = arr[var+1]; } 1. Why does llvm put the address computation in the branched blocks instead of the common dominator? 2. Why does the AliasAnalysis return MayAlias instead of MustAlias? Thanks. -------------- next part

Hi All, Just noticed a funny time jump on a testing CentOS 7 VM. Specifically the system time jumps around by a few hours during system boot. The below is a selection from /var/log/messages during boot: Jan 19 12:49:57 arr-data-dev chronyd[716]: Frequency -0.829 +/- 0.007 ppm read from /var/lib/chrony/drift Jan 19 12:49:57 arr-data-dev polkitd[720]: Started polkitd version 0.112 Jan 19

I have two data frames. One (arr) has all arrivals to an airport for a year, and the other (gw) has the dates and quarter hour of the day when the weather is good. arr has a Date and quarter hour column. >names(arr) [1] "Date" "weekday" "hour" "month" "minute" [6] "quarter" "ICAO"

> On Jun 8, 2018, at 10:37 AM, Herv? Pag?s <hpages at fredhutch.org> wrote: > > Also the TRUEs cause problems if some dimensions are 0: > > > matrix(raw(0), nrow=5, ncol=0)[1:3 , TRUE] > Error in matrix(raw(0), nrow = 5, ncol = 0)[1:3, TRUE] : > (subscript) logical subscript too long OK. But this is easy enough to handle. > > H. > > On

This is odd, and annoying. CentOS 6, current. Here's my awk script: { room = substr($0, 48, 10); arr[$2,room,$1] = $0; } END { for ( i in arr ) { for ( j in arr[i] ) { for ( k in arr[i][j] ) { print arr[i][j][k]; } } } } And when I run it, it complains awk -f awksort proplist7 awk: awksort:7: for ( j in arr[i] ) { awk: awksort:7:

Dear all, I have a problem with interactions in lmer. I have 2 factors (garden and gebiet) which interact, plus one other variable (home), dataframe arr. When I put: / lmer (biomass ~ home + garden:gebiet + ( 1|Block), data = arr)/ it writes: /Error in lme4::lFormula(formula = biomass ~ home + garden:gebiet + (1 | : rank of X = 28 < ncol(X) = 30/ In the lmer help I found out that if not

The arr.ind in the which function does the job very nicely!!! Thank you everyone for the suggestions! Ana > > >---- Mensaje Original ---- >De: marc_schwartz at comcast.net >Para: m_olshansky at yahoo.com >Asunto: Re: [BioC] [R] function to find coodinates in an array >Fecha: Thu, 16 Aug 2007 21:53:44 -0500 > >>If I am correctly understanding the problem, I think

I'm trying to make more compact the definition of a function as for example: f <- function(x) 2/x+3/x by simply defining the array of coefficients arr = c(2,3) and setting: g <- function(x) sum((arr/x)) Everything seems to work fine because the values returned by f and g result coincident for different values of their argument, but when I try to plot the function g using: x =

Dear expeRts, How can I get ... (1) different y-axis scales for each row (2) while having the same y-axis scales for different columns? I coulnd't manage to do this with relation="free" [which gives (1) but not (2)]. I also tried relation="sliced", but it did not give the same y-axis scales within each row (see the fourth row). Further, it "separates" the

Hello, I was thinking about a new possible simplification in InstCombine which would transform code like this: const char * NAME = "Prog"; void printer(char **arr, int len) { for (int i = 0; i < len; ++i) { printf("%s: %s", NAME, arr[i]); } } into void printer(char **arr, int len) { for (int i = 0; i < len; ++i) { printf("Prog: %s", arr[i]);