similar to: R usage survey

Hello All, I am trying to carry out variable reduction. I do not have information about the dependent variable, and have only the X variables as it were. In selecting variables I wish to keep, I have considered the following criteria. 1) Percentage of missing value in each column/variable 2) Variance of each variable, with a cut-off value. I recently came across Weka and found that there is an

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HI R users, I would appreciate information/examples/suggestions on building GUIs for R applications. I am currently working on a project that would require the following functionalities : 1) Display a window to the user. Provide a function to scan local drive and choose dataset file. 2) Display the column names for the user to choose the dependent variable and the independent variables. 3) Fit

Hi UseRs, I recently started working with the RGtk2 library. The documentation is comprehensive and I've tried learning from the examples in most Gtk tutorials (which have C code). This is a little problematic, but has helped quite a bit in getting me started. I would like to create a GUI for file selection, which then displays the column names from the selected file, and provides the user

Hi useRs, I would like to know what R users are employing to get their images/plots created in R, into Excel sheets. I am aware of the various packages (xlsReadWrite, RODBC) to get data frames into R, but I would like to copy images too. Thank you for any help in solving this problem. Regards, Harsh Singhal

deaRs, I want to build a covariance matrix out of the data from a binary file, that I can read in chunk by chunk, with each chunk containing a single observation vector X. I wonder how to do that most efficiently, avoiding the calculation of the full symmetric matrices XX'. The trivial non-optimal approach boils down to something like: Q <- matrix(rnorm(100000),ncol=200) M <-

Hello useRs, I have a problem at hand which I'd think is fairly common amongst groups were R is being adopted for Analytics in place of SAS. Users would like to obtain results for logistic regression in R that they have become accustomed to in SAS. Towards this end, I was able to propose the Design package in R which contains many functions to extract the various metrics that SAS reports.

Hi All, I am trying to assemble a system that will allow me to work with large datasets (45-50 million rows, 300-400 columns) possibly amounting to 10GB + in size. I am aware that R 64 bit implementations on Linux boxes are suitable for such an exercise but I am looking for configurations that R users out there may have used in creating a high-end R system. Due to a lot of apprehensions that SAS

Hello R List, I seem to have a peculiar problem. When using time series data, I get the following error when running the acf and pacf function. Using the function acf(dtxts,plot= TRUE,xaxt = "n",col="red",na.action = na.omit) (where dtxts is a time series object created with package "xts" ) results in the error below. Error in na.omit.ts(as.ts(x)) : time series

Hi List, I am trying to leverage my knowledge of R in trying to use it for tasks that may not make R the best choice for these tasks. I wish to automate a web scraping task, which requires a multi-step procedure: 1) log in to a website 2) Go to a particular page 3) From the drop down menu, click on a particular link 4) From the tabulated data presented, choose relevant information based on a

Hi R users, I apologize for a seemingly trivial question, but I felt this forum would be the best place to seek advice. I have been an R user for a year now, but I am limited to using R and its various contributed packages. I strongly feel that users of a free and open source software tool must eventually provide development expertise. I am aware of the extensive documentation available on the

I have inherited a legacy S-plus system with about 10,000 lines of S and 10,000 lines of Fortran. It's now running under R. However, I would like to profile the fortran code with gprof or prof for performance tuning. I've successfully linked the .so file into a simple C driver program and profiled, but I can't seem to get profiling to work when using dyn.load() to use it from R. Do

Hi useRs, I had posted about Adobe FLEX talking to R for rich visualisation. Reply from Jeffery Horner contained links to the revolution-computing.com webpage which had information pertaining to the Bay Users R group Meetup on Web Dashboards with R. I have a very specific project that I need to implement. I wish to use the graphics capabilities provided by Adobe FLEX to visualise outputs from R.

Hell R-list, At the cost of sounding far-fetched and almost incredulous, I would like to know if any R user is remotely considering the use of R on Mobile devices, and Android in particular. I really do not have an idea of the kind of definite incentives in terms of using R on Android, but having an analytical engine on a mobile phone would allow for micro statistics to be collected from the log

Hi useRs, In trying to take R to engineering undergraduate students, I have been looking for context that would make R more accessible to the said audience. Though R is primarily a statistical tool, I would want to demonstrate the use of R for certain engineering courses (Design of Machine Elements - gear design, ball bearings, etc.) which would generate interest in it and provide students a way

Dear R users/developers, I am posting on behalf of a friend who is looking for R developers. The requirements are : - Available to work/re-locate to Bangalore, India - Over 5 - 6 years of solid R experience is essential - The ideal candidate should have worked on regression modeling and predictive models - Experience using Big Data technologies (like Hadoop)

Hi, I am newbie user of ggplot and would like some assistance in implementing time series plots. I'd like to know how the tsdiag plot can be made in ggplot? Thanks Harsh Singhal Decisions Systems, Mu Sigma Inc.

Hi List, I am running R 2.8.0 on a Windows XP machine, running ggplot2 version 0.8.1 I want to label the bars in a faceted grid barplot. Reproducible R code is given below: #### reproducible facet barplot ##### library(ggplot2) # Dataset from which to create the barplot ml <- rep(1:10,2) vals <- rnorm(20,mean = 10, sd=1) type <- c(rep("MAPE",10),rep("AIC",10))

Hi R users, I'd be interested in what R users think about social networking around all things R. For this, I've set up a social network @ www.rstuff.socialgo.comand it would be great if you could post your comments on the forum created for this discussion. The News section has feeds from some of the R related blogs I've been following. I'm hoping for a central resource that keeps

Hello, I'm trying to pull data from a network drive on a windows machine. The location is read into a string <rem> and then used later with a data input command. > rem<- "\\192.192.192.3\Shared\iris1.csv" Warning messages: 1: '\S' is an unrecognized escape in a character string 2: '\i' is an unrecognized escape in a character string 3: unrecognized