[R] Ordering Filenames stored in list or vector

Hello everyone, I am an R rookie and I'm learning as I program. I am working on a script to process a large amount of data: I read a pattern of filenames in the folder I want and import their data filenames = list.files(path, pattern="*Q_Read_prist*") myfiles = lapply(filenames, function(x)

[R] Random forest regression: feedback on general approach and possible issues

Hi all, I'd like to use random forest regression to say something about the importance of a set of genes (binary) for schizophrenia-related behavior (continuous measure). I am still reading up on this technique, but would already really appreciate any feedback on whether my approach is valid.

[R] dataframe rbind

Dear friends - I have a very simple question - I generate a number of dataframes with identical names and want to combine them into one large dataframe with the same names - here is an example DF <- data.frame(a=rnorm(10),b=runif(10),ID=0) for (i in 1:10){ DF <-

[R] Can we use all the functions of R in visual studio? The Rmath.dll and R.dll seems only contain a part of R functions

Can we use all the functions of R in visual studio? The Rmath.dll and R.dll seems only contain a part of R functions Hi, I 'm going to use R functions in visual studio. I have investigated this problem for several days. There're guide about using R in embedded way,which use R.dll. But it

Re: [R] Ordering Filenames stored in list or vector

The thread below has a number of solutions. I personally like the one with sprintf(). https://stat.ethz.ch/pipermail/r-help/2010-July/246059.html B. On Dec 4, 2015, at 5:51 AM, BARLAS Marios 247554 wrote: > Hello everyone, > > I am an R rookie and I'm learning as I

Re: [R] Random forest regression: feedback on general approach and possible issues

I would suggest that you post instead on stats.stackexchange.com . This forum is mostly about R programming issues, not statistics (admittedly, the intersection is nonempty, but ...) That stackexchange forum is more about statistics. You might also consider a bioconductor forum, as this appears

Re: [R] Strange error

Hi again, i found the error: the problem was that I have created a template of rmarkdown myself inspired from Tufte one and I guess I didn't build it correctly..when i tried running it in a regular rmarkdown template it worked. sorry for inconvenience nick Nicolae (Nick) Doban | Masters student

Re: [R] Question Regarding a nested for loop in R

Hi Ryan, I don't think you need the outer loop, loops are worth avoiding if you can possibly can because they are inefficient, have a look at this dplyr tutorial (https://cran.rstudio.com/web/packages/dplyr/vignettes/introduction.html) which should be able to achieve what your outer loop is

[R] For loop coding

Hi I will be grateful if someone please tell me the programming to run regression on time series data through "For Loop". Regards. Saba Sent from Yahoo Mail on Android [[alternative HTML version deleted]] __ R-help@r-project.org mailing

[R-es] Big Data Asturias

Saludos a Todos Hemos creado un grupo informal de gente interesada en Big Data en Asturias que pretendemos reunirnos de manera más o menos regular. Para todos los que andéis por aquí, tendréis más info en https://www.facebook.com/BigDataAsturias/

Re: [R] Survival analysis: ERROR: Time and status are different lengths

I expect that reading the result of print(fit.weib) will answer your question. If there were any missing values in the data set, then the fit.weib$linear.predictors will be shorter than the original data set, and the printout will have a note about "...deleted due to missing". The simplest

[R] queries return different output when sourced

Dear all, We need to run several queries in an R Markdown file. The queries have quit elaborate sql statements. We try to recude the amount of code in the markdown file by moving the query functions in a seperate R script which is sourced by the markdown file. The queries work fine if we place

[R-es] Big Data 2016 Alicante

Buenos días, Quiero animaros a participar en el Congreso Big Data 2016 que se celebrará en Mayo en Alicante. Hemos propuesto una sesión especial titulada "R programming and Algorithms for Big Data" para que podáis incluir los trabajos que hacéis habitualmente. Toda la información sobre este

Re: [R] Can we use all the functions of R in visual studio? The Rmath.dll and R.dll seems only contain a part of R functions

There is statconnDCOM, whoch gives full R as a COM server which can be used from all he Visual languages. It is not free. There are cost free licenses for student and home use, but essentially it is a commercial product. Mor information can be found at www.statconn.com

Re: [R] system.file(...) self-referencing the containing package

On 04/12/2015 11:28 AM, Murat Tasan wrote: Perfect, thanks! (Any idea if/where this is documented? I checked through the "Writing R Extensions" doc and couldn't find any mention of it.) It is mentioned in ?getPackageName: " (Currently, the name is stored as the object |.packageName| but

Re: [R] dataframe rbind

Thanks a lot - I should have seen that Best wishes Troels Den 04-12-2015 kl. 17:09 skrev PIKAL Petr: Hi Maybe little bit of studying how functions work can be useful rbind uses to bind two objects together, however you give it only one. Use DF <- rbind(DF,

[R] RPostgreSQL (or even ANSI DBI) parameterized query with IN (...)

Using PostgreSQL's parameterized query form, this works: R> dbSendQuery(CONN, "SELECT * FROM foo WHERE val = $1 OR val = $2", list("bar", "baz")) ... and becomes: SELECT * FROM foo WHERE val = 'bar' OR val = 'baz'; I cannot figure out, however, if something like this is possible with

Re: [R] For loop coding

Hi > -Original Message- > From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Saba > Sehrish via R-help > Sent: Friday, December 04, 2015 11:21 AM > To: r-help@r-project.org > Subject: [R] For loop coding > > Hi > > I will be grateful if someone please tell me the programming

Re: [R] dataframe rbind

Try reading and following the Help file, ?rbind.data.frame. You are inventing your own syntax, not using R's. Incidentally, growing the frames as you do is generally a bad idea. Search r-help archives for why. Cheers, Bert Bert Gunter "Data is not information. Information is not knowledge.

Re: [R] dataframe rbind

On 04 Dec 2015, at 17:03 , Troels Ring wrote: > Dear friends - I have a very simple question - > I generate a number of dataframes with identical names and want to combine > them into one large dataframe with the same names - > here is an example > > DF <-

Re: [R] Ordering Filenames stored in list or vector

Mario, I am certain there are more elegant solutions. This is an effort to make the process clear by dividing out each transformation used into separate lines. ## Start of code library(stringi) # This is written in C and C++ (ICU library), is fast, and is well documented. filenames <-

Re: [R] system.file(...) self-referencing the containing package

Perfect, thanks! (Any idea if/where this is documented? I checked through the "Writing R Extensions" doc and couldn't find any mention of it.) Thanks much again, -Murat On Thu, Dec 3, 2015 at 6:42 PM, William Dunlap wrote: > Every package has in it, after it is installed,

Re: [R] dataframe rbind

This will work, although depending on what you are trying to do, there may be a better way: > DF <- data.frame(a=rnorm(10),b=runif(10),ID=0) > for (i in 1:10){ + DF <- rbind(DF, data.frame(a=rnorm(10),b=runif(10),ID=i))} > str(DF) 'data.frame': 110 obs. of 3 variables: $ a : num 0.792 0.141

Re: [R] dataframe rbind

Hi Maybe little bit of studying how functions work can be useful rbind uses to bind two objects together, however you give it only one. Use DF <- rbind(DF, data.frame(a=rnorm(10),b=runif(10),ID=i)) instead. Cheers Petr > -Original Message- > From: R-help

Re: [R] Ordering Filenames stored in list or vector

> filenames <- c("Q_Read_prist#1...@1.xls", "Q_Read_prist#1...@10.xls", > "Q_Read_prist#1...@2.xls") > filenames <- gtools::mixedsort(filenames, numeric.type="decimal") > filenames [1] "Q_Read_prist#1...@1.xls" "Q_Read_prist#1...@2.xls" "Q_Read_prist#1...@10.xls" /Henrik On Fri, Dec 4, 2015

Re: [R] Question Regarding a nested for loop in R

I'll hope this isn't homework (R-help has a "don't do people's homework for them" convention), and make a few suggestions. The inner loop is not needed. For example, you can replace for (i in 1:15 ) { Inv1Outcome[i] = if (random[i] <= .25){Inv1Returns[1]} else if (random[i] > .25 & random[i]

Re: [R] Survival analysis: ERROR: Time and status are different lengths

Hi Terry, I already suspected it had something to do with missing values in one of the covariates. I couldn't get the na.action="na.exclude" to work (perhaps this is because I am relatively unexperienced with R), but I managed to solve the problem by using the following command with

Re: [R] Keep only first date from consecutive dates

With a data.frame sorted by id, with ties broken by date, as in your example, you can select rows that are either the start of a new id group or the start of run of consecutive dates with: > w <- c(TRUE, diff(uci$date)>1) | c(TRUE, diff(uci$id)!=0) > which(w) [1] 1 4 5 7 > uci[w,] id date

Re: [R] Keep only first date from consecutive dates

> On Dec 4, 2015, at 1:10 PM, William Dunlap wrote: > > With a data.frame sorted by id, with ties broken by date, as in > your example, you can select rows that are either the start > of a new id group or the start of run of consecutive dates with: > >> w <- c(TRUE,

[R] John M. Chambers Statistical Software Award

John M. Chambers Statistical Software Award 2016 This is a second announcement for the Chambers Award and reminder that all application materials must be submitted by December 15. The John M. Chambers Statistical Software Award is an annual award given by the Statistical Computing Section of