similar to: Why R is 200 times slower than Matlab ?

This is what I refer to as "ab uno disce omnes"-thinking: -- from one example all is revealed -- but this is the antithesis of statistical thinking. Here is an example function, others can probably do better. On a vector of length 300 it takes .018 seconds on my aging G5 ppc mac: pears <- function(x){ n <- length(x) A <- combos(n,2) rbind(x[A[1,]],x[A[2,]]) } This is

Dear helpers, I am trying to plot two survival curves in the same figure. plot(survival) // in matlab, one just need to call "hold on" plot(survival2) I am wondering how to do it in R. Thank you very much! -- Zhandong Liu Genomics and Computational Biology University of Pennsylvania 616 BRB II/III, 421 Curie Boulevard University of Pennsylvania School of Medicine Philadelphia, PA

The topic of Ra and jit has come up on this list recently (see http://www.milbo.users.sonic.net/ra/index.html) so I thought people might be interested in this little demo. For it I used my machine, a 3-year old laptop with 2Gb memory running Windows XP, and the good old convolution example, the same one as used on the web page, (though the code on the web page has a slight glitch in it). This

Thank you sir for your prompt reply. Currently i am stuck at point where I need to call an available Matlab program from an R 2.4.0 interface. How can I do this? I have downloaded the R.matlab file and also the manual in pdf. But still i am not able to get through the problem. I will be grateful to you if you can elaborate me on this. Awaiting your reply, regards, Bhanu Kalyan K

Hi,all I have a problem running R.matlab package (under 2.10.1 version). I can set up the matlab server under local machine(run the MatlabServer.m), " And I can use setVariable and evaluate matlab functions in R. But when I ask Matlab to send the value back to R using getVariable function it always returns an error: " ??? Error: A MATLAB string constant is not

Dear R-Experts, here again a question concerning matlab. With the command "matrixM=[1 2 3;4 5 6]" a matrix under Matlab was constructed. It was than stored with the command "save('matrixM.txt','matrixM')". Now I tried to import the data in R with the help of the command "Z=matrix(scan("Z:/Software/R-Programme/matrixM.txt"))" An error

Is there any way to read these files (standard .mat files, created by matlab version 7 onwards are compressed)? I know that R.matlab doesn't read them (it even says in the file MatlabServer.m "Matlab v7 saves compressed files, which is not recognized by R.matlab's readMat()" (lines 47-8)). I know I should be able to make R call Matlab and transfer data (not that I managed to

In order to start matlab server in R , I using the following commands getwd() setwd("D:\R_matlab") install.packages("R.oo") install.packages("R.matlab") install.packages("R.utils") library(R.matlab) Matlab$startServer() a minimized MATLAB Command Window come out, but I can't make this window become larger. Does anyone know why? I type

Hi. On 12/30/06, Bhanu Kalyan.K <kalyansikha at yahoo.com> wrote: > Dear Mr.Bengtsson, > > The steps you have suggested are working for single lines of matlab > statements. But, as i mentioned earlier, If i want to see the output of an > entire matlab code (say swissroll.m) then you suggested me to do > res <- evaluate(matlab, "swissroll"). > When i did

Dear R-listers Is there anyone who knows why I get different eigenvectors when I run MatLab and R? I run both programs in Windows Me. Can I make R to produce the same vectors as MatLab? #R Matrix PA9900<-c(11/24 ,10/53 ,0/1 ,0/1 ,29/43 ,1/24 ,27/53 ,0/1 ,0/1 ,13/43 ,14/24 ,178/53 ,146/244 ,17/23 ,15/43 ,2/24 ,4/53 ,0/1 ,2/23 ,2/43 ,4/24 ,58/53 ,26/244 ,0/1 ,5/43) #R-syntax

Hallo, does a package for Matlab exist in R? If yes, where can I find it and how can I install it under R? Thanks, Corinna

Dear All Is there any software package like MATLAB for Windows available for centos? Thank you -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100503/7a522211/attachment-0001.html>

Does anyone know how to solve this question about R.matlab? I am in windowsXP, my matlab is matlab 7.0.0 19920(R14) thanks, Aimin > matlab <- Matlab(host="localhost", port=9998) > if (!open(matlab)) throw("Matlab server is not running: waited 30 seconds.") Error in list("throw("Matlab server is not running: waited 30 seconds.")" =

Dear all! Although the Psycho-Toolbox for Matlab is free software, Matlab isn't. I'm planning to do an experiment where it's essentail to travel to the subjects, not let the subjects come to where the Matlab licences are :-( So I need to use a free software for my experiment if I don't want to by an extra Matlab licence (which I don't want to). Did anyone ever try to do

Dear Group, I am looking for ways to use R and Matlab. Doing the data transformations in R and using the data in Matlab to analyze with some pre-defined scripts. Any good ways to transfer the data into matlab in its most recent version? I tried using R.matlab but the writeMat output is not readable by Matlab. I just need to output a data.frame and read it as is into matlab where I can do any

Hi, I am trying to load into R a MATLAB format file (actually, as saved by octave). The file is about 300kB but R complains with a memory allocation error: > library(Rcompression) > library(R.matlab) Loading required package: R.oo Loading required package: R.methodsS3 R.methodsS3 v1.2.0 (2010-03-13) successfully loaded. See ?R.methodsS3 for help. R.oo v1.7.2 (2010-04-13) successfully

Hi R, Can I get a comparison between R and MATLAB? How is R efficient than MATLAB? Or what are the weaknesses of R compared to MATLAB? Thank you very much for your help, Shubha Shubha Karanth | Amba Research Ph +91 80 3980 8031 | Mob +91 94 4886 4510 Bangalore * Colombo * London * New York * San José * Singapore * www.ambaresearch.com This e-mail may contain confidential and/or

Hi, I want to creat a GUI accessible via the web with ruby to interface some matlab implementation ... so I extended Ruby with C++ and then matlab :) that works perfectly: I have finaly a Ruby class I can call whenever I want to lunch my matlab algorithm ;) the point is now I have to make the GUI in HTML with Rubby on rails and Damn! I don''t get how works the MVC architecture in Ruby

A colleague pointed me to this article advocating R as a Matlab substitute. Here is the link (deliberately on two lines: http://searchenterpriselinux.techtarget.com/ originalContent/0,289142,sid39_gci902076,00.html I'm not a Matlab user, but I understand that it provides a nice front end to the Linpack collection of numerical linear algebra routines. My friend and I wonder if R can really

Sorry if these questions have been asked recently--I'm new to this list. I'm primarily a Matlab user who is attempting to learn R and I'm searching for possible equivalents of commands that I found very handy in Matlab. So that I don't seem ungrateful to those who may answer, I HAVE determined ways to carry out these processes in 'brute force' sorts of ways in R code,