search for: myls

dear expeRts, i would like to merge the data frame entries in a list. for example: > #input > myl <- list(q1=data.frame(id=c("Alice", "Bob"), grade=c(90, 49)), q2=data.frame(id=c("Alice", "Chuck"), grade=c(70, 93)), q3=data.frame(id=c("Bob", "Chuck"), grade=c(84, 40))) > #output > (mydf <-

I'm attempting to generalise a function that reads individual list components, in this case they are matrices, and converts them into 3 dimensional array. I can input each matrix individually, but want to do it for about 1,000 of them ... This works array2 <- abind(list1[[1]],list1[[2]],list1[[3]],along=3) This doesn't array2 <- abind(list1[[1:3]],along=3) This doesn't either

Hello. Consider the response-variable of data.frame df is constant, so analytically perfect fit of a linear model is expected. Fitting a regression line using lm result in residuals, slope and std.errors not exactly zero, which is acceptable in some way, but errorneous. But if you use summary.lm it shows inacceptable error propagation in the calculation of the t value and the corresponding

Hi Stephen, I am not sure that the "for loop" is the source of slowness. You seem to be doing a lot of unnecessary work each time through the loop. e.g. no need to check if it's the last file, just move that section outside of the loop. It will be executed when the loop finishes. As it is you are calling list.files() each time through the loop which could be slow. In any case

Dear All, I have a following for-loop code which is basically intended to read in many excel files (each file has many columns and rows) in a directory and extract the some rows and columns out of each file and then combine them together into a dataframe. I use for loop which can do the work but quite slow. How to make it faster using lapply function ? Thanks in advance! temp.df<-c() #

Eric's approach seems reasonable to me, and I agree that it's probably not the use of a "for" loop that makes the original version slow. As Eric mentioned, there are lots of unnecessary things happening in the loop. For example, list.files() was called twice inside the loop, which is unnecessary, and will definitely slow the loop down (though probably not by much). Call it

...with a file path as argument. edit.default currently calls the function with three arguments: name, file, and title. For example, running the following vimCmd <- 'vim -c "set ft=r"' vimEdit <- function(file_) system(paste(vimCmd, file_)) options(editor = vimEdit) myls <- edit(ls) gives "Error in editor(name, file, title) : unused arguments (file, title)". The attached patch changes edit.default to call the editor function with just the file path. There is at least one inconsistent behavior that this patch causes in its current form. It does not ob...

Hello, I'm new to this and am trying to teach myself some R by plotting biological data. The growth curve in question is supposed to be fitted to the Verhulst equation, which may be transcribed as follows: f(x)=a/(1+((a-0.008)/0.008)*exp(-(b*x))) - for a known population density (0.008) at t(0). I am trying to rework the example from "An Introduction to R" (p. 72) for my case and

How is it possible to have the dovecot.rawlog-directory outside the mail_location? A link to another directory is not because it is checked in rawlog.c S_ISDIR to directory.

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thu, 12 Mar 2015, Hardy Flor wrote: > How is it possible to have the dovecot.rawlog-directory outside the > mail_location? A link to another directory is not because it is checked in > rawlog.c S_ISDIR to directory. Patch rawlog.c and recompile. :) - -- Steffen Kaiser -----BEGIN PGP SIGNATURE----- Version: GnuPG v1

Dear useRs, I have a utility function which is meant to be a clone of ls(), except with the option all.names=TRUE. Currently however, the function merely consists of a copy of the source code of ls(), except the default value of all.names is different. That approach has the drawback of future inconsistency if the code for ls() ever changes. No comment on whether that is likely or not; I would

I'd like to use an R CMD BATCH script as part of a chron job that is set up to run every hour. The trouble is that the script creates a graphical output in a file via png(), and apparently this in turn works through X. When cron invokes the job, no X server is available -- I suppose that the DISPLAY variable is not set -- and so R exits with an error message in the output file. (If I run the

Dear group, I am trying to write functions, but as a beginner, everything is not so obvious. Let's say I want the results in a list of elemts like this : tot1, tot2, etc Here is a function: toto <- function(x,y) { for(i in x:y){ paste(c("tot",i),collapse="")<-(i*2) } } If I type this : >toto(1,5) I get this message error: Error in paste(c("tot",

Everyone, Have any of you installed ubiguiti wireless routers on your network? It looks like the setup requires the use of software; they have some packages that are ready made for Ubuntu and Debian, but not RedHat https://www.ubnt.com/download/unifi/unifi-ap-ac-pro Have any of you tried or succeeded in installation this on Centos 7.4? Greg Ennis