Re: [R] Variable Selection for Logistic Regression

Lasso is an obvious choice by it may also be interesting to look at the variable importance from a random forest model On 17 Dec 2015 17:28, "Manish MAHESHWARI" wrote: > Hi, > > I have a dataset with approx 400K Rows and 900 columns with a single > dependent variable of 0/1 flag. The independent

Re: [R] Extract a predictors form constparty object (CHAID output) in R

saic(shortform, data = ContraceptiveChoice) #stp <- step(glm(satform, data=ContraceptiveChoice, family=binomial), direction="both") On 16 October 2013 20:18, Christiaan Pauw wrote: > I have a large dataset (questionnaire results) of mostly categorical > variables. I have teste

[R] Extract a predictors form constparty object (CHAID output) in R

atic way to extract 'shortform' from 'z' # Examples of use of 'shortfom' loglm(shortform, data = ContraceptiveChoice) Thanks in advance Christiaan -- Christiaan Pauw Nova Institute www.nova.org.za __ R-help@r-project.org m

Re: [R] SVMREF infinte number of genes

g list > 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. > -- Christiaan Pauw Nova Institute www.nova.org.za [[alternative H

Re: [R] ffbase, help with %in%

if (useNA == "no") c(NA, NaN) : > la condición tiene longitud > 1 y sólo el primer elemento será usado > > > in a regular data.frame I use data[a,] to extract the rows that a == > TRUE, but when i do this in a ffdf i get this error: > > >> data[a,]Error:

Re: [R] Passing arguments to a function within a function ...

Thanks Rui It works. On 7 August 2012 11:34, Rui Barradas wrote: > Hello, > > Your problem seems simple, if I understand it correctly. Just add an extra > argument to the caller function, drep(). Christiaan Pauw Nova Institute www.nova.org.za

[R] Passing arguments to a function within a function ...

) } ) names(dr.out) <- paste(sicklist$end.point,": ", names(dr.out),sep="") dr.out } # This is where the trouble starts: What do I do if I need to pass the argument base.conc=10 o

Re: [R] Loading Dataset into R continual issue

n > > mod1<-lm(Pat2006~FHouse) > I got > Error in eval(expr, envir, enclos) : object 'Pat2006' not found -- Christiaan Pauw Nova Institute www.nova.org.za __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/li

Re: [R] nice report generator?

;        [[alternative HTML version deleted]] > > __ > R-help@r-project.org mailing list > 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, reproducibl

Re: [R] find and replace string

.cfg > > sta_+1+2_field2ndtry_$01.cfg > > sta_+1+3_field2ndtry_$01.cfg > > and so on.. > I have already tried strsplit but this will make things more complex... > > Could you please help me with that? > > B.R > Alex > -- Christiaan Pauw Nova Institute www.nova.org

Re: [R] Thank you

And from the side of a ordinary user who opened the page that read: "Chapter 1: What is R?" two years ago to all of you on this list: Since reading that first page things have changed so that I would get through a normal working day without the software you create and the advice you give. Thank yo

[R] Installing rJava from source on Mac

Hi Everybody I am trying to install the latest version of JavaGD from source but get the following error. trying URL 'http://cran.za.r-project.org/src/contrib/JavaGD_0.5-4.tar.gz' Content type 'application/x-gzip' length 102242 bytes (99 Kb) opened URL ===

Re: [R] List of lists to data frame?

On the face of it this looks like a job for ldply() in the plyr package which specialises in taking things apart and putting them back together. ldply() applies a function for each element of a list and then combine results into a data frame On 17 November 2011 04:53, Sarah Goslee wrote: > O

[R] matrix of chi-square results for all combinations of data frame

Hi everybody I have a questionnaire with a lot of questions that allow for more than one option to be chosen (like a tickbox in a html form). The data captured on a mobile device and is supplied in a format where every option is a separate variable (logical). I want to develop a generic function t

[R] Extract named regions from an Excel file using XLConnect?

Hi Everybody In R, the XLConnect package can read and write named region to and from Excel. In order to read a named region with the readNamedRegion function you need to know it's name. You can check is a name exists with existsName, but you still have to know the name. Is there a way to actually

[R] Use a list to 'transport' a collection of data sets and results

Hi Everybody I need to "transport" some data and results to use another application (Sweave via LyX - where debugging is very difficult) in order to build a report. Is it possible to store a collection of variables of different types (like named integers, matricies, data frames and two lists) all

Re: [R] texi2dvi runs but produces no output

st" 0 patches made. Did you set \SweaveOpts{concordance=TRUE}? Is it the fact that Miktex is still in path containing spaces that is causing this? best regrads Christiaan 2011/6/17 Uwe Ligges > > > On 17.06.2011 09:24, christiaan pauw wrote: > >> Thanks for the a

Re: [R] texi2dvi runs but produces no output

ecommended") Error in setwd(outDir) : cannot change working directory On 16 June 2011 14:10, Duncan Murdoch wrote: > On 11-06-16 7:50 AM, christiaan pauw wrote: > >> Hi everybody. >> >> Was the problem below ever solved? I have the same problem on Windows 7 >

Re: [R] texi2dvi runs but produces no output

Hi everybody. Was the problem below ever solved? I have the same problem on Windows 7 with R 2.13.0 and LyX 2 - everything freshly installed. My Rweave.bat and MakeSweave.R files are similar to below (I followed http://wiki.lyx.org/uploads/LaTeX/SweaveR/lyx_with_r_and_sweave_instructions.pdf ) I a

Re: [R] Identifying sequences

are looking for continuity along > integers, so if you expect noninteger values this will not work. > > You can get the index of where breaks can be found in your example using > > which(diff(x) > 1) > > On Wed, Jun 1, 2011 at 6:27 AM, christiaan pauw wrote: > > Hallo Eve

[R] Identifying sequences

Hallo Everybody Consider the following vector a=1:10 b=20:30 c=40:50 x=c(a,b,c) I need a function that can tell me that there are three set of continuos sequences and that the first is from 1:10, the second from 20:30 and the third from 40:50. In other words: a,b, and c. regards Christiaan

[R] Question of the XLConnect package

Hi Everybody I have started to learn how to use the XLConnect package and I think it is going to be very helpful to help me to operate between Excel users. Is there a function that can export a dataframe to a Excel sheet and automatically create a named region for every column (excluding the colu

Re: [R] Math characters in column heading using latex() in Hmisc

MENT=en_US.utf8 LC_IDENTIFICATION=C > > attached base packages: > [1] splines stats graphics grDevices utils datasets methods > [8] base > > other attached packages: > [1] xtable_1.5-6Hmisc_3.8-3 survival_2.36-5 > > loaded via a namespace (and not attached): &

[R] Math characters in column heading using latex() in Hmisc

Hi Everybody I want to print a latex table containing math characters in the column heading These are the formulae I want to use as column headings. It prints OK from TeX $\sum_{i}\sum_{j}C_{P,i,j,y}\times\mathit{FC}_{i}$, $XU_{alt,y}$, $n$, $\bar{C}_{P,y}$ My plan was to create a character vec

[R] User input in R program

HI Everybody Does anyone know of documentation about different ways of obtaining user input in R. I have used readline() but I wondered is there are sophisticated packages that does things like validate answers or generate selection lists. bets regards Christaan [[alternative HTML versio

Re: [R] Is there a join() function in R ? OR: simulating "Combining ggplot2 and Google Maps" by David Kahle

Thanks Michael I update plyr and it works now. regards, Christiaan On 16 December 2010 13:40, Michael Bedward wrote: > Hi Christiaan, > > That looks like the join function in the plyr package. > > Michael > > [[alternative HTML version deleted]] ___

[R] Is there a join() function in R ? OR: simulating "Combining ggplot2 and Google Maps" by David Kahle

Hi everybody Im on R version 2.11.1 on Mac OS X I am working through David Kahle's example of using ggplot2 with Rgooglemaps (found here: https://github.com/hadley/ggplot2/wiki/Crime-in-Downtown-Houston,-Texas-:-Combining-ggplot2-and-Google-Maps). Excellent page by the way. I have downloaded the

[R] Again: wget parameters

Hi Ricardo and everybody In this old post to rhelp you say that the problem was solved but not what the sollution was. I have the same problem now. I want to read a Excel file from a google site that has restricted access so I need to give a username and password at some point. I could not find an

[R] RJSONIO install problem

Hi everybody I am trying to install RJSONIO from source in on Mac OS X 10.5.8. I used the Package Installer. The message and sessionInfo is attached below Can someone help me to understand the error message and maybe give hint towards solving the problem thanks in advance Christiaan Message: T

Re: [R] duplicated() and unique() problems

Thanks for your help Petr I think I understand better now. > > > Masechaba$unique[which(is.na(unique(Masechaba$PROPDESC))==FALSE)]=TRUE >^^^ > This seems to be strange. At first sight I am puzzlet what result I shall > expect from s

[R] duplicated() and unique() problems

Hi everybody I have found something (for me at least) strange with duplicated(). I will first provide a replicable example of a certain kind of behaviour that I find odd and then give a sample of unexpected results from my own data. I hope someone can help me understand this. Consider the followi

[R] Sampling from a Postgres database

Hi Everybody Is there a way in which one can use the RPostgreSQL package to take a sample from a table in Postgres database without having to read the whole table into R regards Christiaan [[alternative HTML version deleted]] __ R-help@r-proje

Re: [R] RPostgreSQL package and libpq.dll file

Update to R 2.9 As far as I know the RPostgreSQL package doesn't work in R 2.8 2009/9/14 Lore M > > It still doesn't work. Now, R is asking me for the SSLEAY32.dll. If I > download it from the internet, and then put it in the file > \R-2.8.1\library\RPostgreSQL\libs, now they ask me for the VSIN

[R] Installing RPostgreSQL from source on Mac OS X

Hi Everybody I use R2.9.2 on Mac OS X 10.5.2. I tried to install RPostgreSQL from source on CRAN via the package installer. Apparently the program cannot find my C compiler gcc . Here is the output message trying URL ' http://cran.za.r-project.org/src/contrib/RPostgreSQL_0.1-6.tar.gz' Content ty

Re: [R] melting columns

Hi Thibault Please give a short example of what the data looks now like and what you want it to look like. regards Christiaan 2009/10/22 Thibault Grava > Hello, > > I'm using R to run a acoustic analysis software called Seewave. I ask the > code to extract a list of variables from my recordin

[R] RPgSQL installation problem

Hi everybody I am trying to install RPsSQL and get the following error message: When I do ./configure form the untarred source directory I get loading cache ./config.cache checking for crypt in -lcrypt... no No crypt function found When I use the Package installer in R I get install.packages("/

Re: [R] Sweave file generation

I use Lyx (www.lyx.org) with the Sweave noweb report or article class for the same purpose (if I understand you correctly). LyX is a LateX front-end where you can embed long and short R code. You can write the complete R program inside the document. For latex tables the most elegant solution is som

[R] merging dataframes with an unequal number of variables

Hallo Everyone I have the kind of problem that one should never have because one must always plan well and communicate with your team. But now I haven't so here is my problem. I have data coming in on a daily basis from surveys in 10 towns. The questionnaire has 62 variables but some of the region

[R] Read and merge a number of .xls files into one dataframe

Hi everybody I have a large number of Excel speadsheets that I want to merge into one R dataframe to process. I can read them one by one with read.xls but I really need a function to read a whole directory at once and merge the columns with the same name into a single dataframe. here is what I hav

[R] Horisontal line in xtable

Hi everyone (Pardon the incorrect terminology of my previous post: "vertical line...). I have created a function that uses xtable to print table of frequencies and percentages with a heading and some sample information (the sample size and missing values). The function and example data is below.

[R] vertical line in xtable

Hi everyone I have created a function that uses xtable to print table of frequencies and percentages with a heading and some sample information (the sample size and missing values). The function and example data is below. I want a vertical line that separates the results from the sample informat

Re: [R] Delta in time series

Or x=c("2009-03-09 12:00:00","2009-03-09 13:30:00") y=data.frame(x) attach(y) x=as.POSIXlt(x) x[1]-x[2] On Wed, Jun 10, 2009 at 5:04 AM, koj wrote: > > > > > > I have time data in the following format: > > > > 2009-03-09 12:00:00 > > 2009-03-09 13:30:00 > > > > > [[alternative HTML v

[R] by and by: using two indices in by() or tapply()

Hi everyone I want to apply a function by two indices. I have a number of surveyors submitting questionnaires. I want to check the time of the first submission for the day for each surveyor and also see a NA is no submission was done on a particular day. This generates a sample of the data: sta

[R] isolating Hour and minute form date and time

Hi everybody. I have a dataframe that contains a factor with the date information in the format like in the example below: "2009/05/12 11:22:31 AM" I have been able to convert it to POSIXt using strptime Now I want to print only the date as one vector and the time in another vector but they must

[R] Duplicates and duplicated

Hi everybody. I want to identify not only duplicate number but also the original number that has been duplicated. Example: x=c(1,2,3,4,4,5,6,7,8,9) y=duplicated(x) rbind(x,y) gives: [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] x123445678 9 y0

Re: [R] Sweave doesn't do csv.get()

It works now. Your help is much appreciated Christiaan 2009/2/27 Frank E Harrell Jr > christiaan pauw wrote: > >> Hi Everybody >> I use R2.8.0 on Mac OS X. I set up LyX 1.6.1 to use Sweave today. I can >> compile the test file I found on CRAN ( >> http://cran.r

[R] Sweave doesn't do csv.get()

Hi Everybody I use R2.8.0 on Mac OS X. I set up LyX 1.6.1 to use Sweave today. I can compile the test file I found on CRAN ( http://cran.r-project.org/contrib/extra/lyx/) without a problem and the output looks very nice. In the test file the following R code is used. <>= xObs <- 100; xMean <- 10;

[R] Latex or html output for freq() in prettyR

Hi Everybody I need to create a lot of frequency tables with frequencies and percentages (and cumilative freq and % as well) for a report. freq() in prettyR give more or less what I need. I am trying to export the result of freq() to html but the html doesn't look look the console output. See the

Re: [R] runs.test in by() statement

) Regards Christiaan On 14/01/2009, christiaan pauw wrote: > exampledata<-data.frame(interviewer=rep(letters[1:2], 1), > var=round(var=runif(40))) > > I do the runs test on "var" and it works > runs.test(as.factor(exampledata$var)) > I can catagorise the data by "

[R] runs.test in by() statement

Hi everybody I am a recent convert from SAS so please excuse me if this is all very obvious: I want to use the runs test {runs.test() in package tseries} to test the randomness of a certain variable in a survey for each interviewer. I tried to us the by() statement but it doesn't seem to work wit