similar to: Error: could not find function "readMat"

Dear users, I am stucked with a programming problem: I am trying to download a squared adjacency matrix from matlab with only 0 or 1. Doing it without a loop at first, I get an error message that is, I think, related to the "mat_adj<-readMat(pathnames_adj)" line. Did anybodz encouter already that problem? If so, do I need to change anything in my code in order it not to be

Hello I have a matlab MAT file that contains one single variable: a. The structure of a is as follows: a.river1.flow (flow values) a.river1.date_flow (date) a.river1.precip (precipitation values) a.river1.date_precip a.river2.flow a.river2.date_flow a.river2.precip a.river2.date_precip I have used readMat to load the variable a in R, however I have no idea how readMat translates a. I managed

Hi to the list, I am trying to find a way to painlessly move structured data back and forth between R and Matlab (also Octave). For this purpose I found the R.matlab package great help. I wish to use a Matlab -v6 MAT file as an intermediary format, because it is well read by both Matlab and Octave. It is also well read by 'readMat' function in R.matlab package, but that is where I run

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

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 I am using Ubuntu 8.04 64 bit, R as below, Matlab 7.6.0. I would like to transfer mat files back and forward between R and Matlab. Whilst I have used Matlab for years its been a long time since I have used R (hence question may be a bit simple) Running code A <- c(1:10) dim(A) <- c(2,5) library(R.matlab) writeMat('A.mat', A=A) Does not appear to generate any mat file

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

Hello, I have problems running the R.matlab package. I work with R 2.3.1, under windows (using the Rgui). It seems that, even after loading the package, the "simple" functions such as writeMat() or readMat() are not recognized. For example, the following script leads to an error: > install.packages("R.matlab") --- Please select a CRAN mirror for use in this session ---

Hi, Suppose I have a matrix of size 256x14x32 in MATLAB. I want to import that into R. I used readMat and then do.call. But the variable is stored as an array as its done in R. However, I want to define a variable W=array(0,c(256,14,32)) in R and read the multidimensional matlab variable into W. I am not able to do this in R. Please, could you help ? Thanks Gopi [[alternative HTML version

Hello, I have a data file originally as .mat file from matlab that I imported in R using the R.matlab package (readMat). This loaded a list containing amongst other things a 4x4 array of rainfall data that is quite heavy (around 40 Mb, it took 10 minutes to load on my computer). I tried to export it as R data file or simply a text file (using the command write) to share this data with

Dear R users, I am tryting to save an 3d array to a matlab file like the following. A <- array(1:24, c(2,3,4)) writeMat(filename, A=A) But if I load the mat file from Matlab, it is not 3d matrix anymore. Does anyone know how I can preserve the 3d structure? Any help will be greatly appreciated. Minho Chae [[alternative HTML version deleted]]

Hi All, I am dealing with a large data set which translates in to a sparse matrix, I want to load this data that is spread in approximately 17000+ files each defining a row and each file has variable number of records that come with its column number and the value that they store. I wish to load this data in memory from these files one by one. Is there anyway I can do this in R, before I start

Hi, As a beginner in R, I need some help on a programming problem which, I guess, will seem trivial to you: I am doing some Network analysis in which I need to calculate some metrics for all the weeks I have (each week the network evolves in terms of number of nodes etc...) For exemple, I need to calculate the degrees of the nodes each weak, and to repeat it in a loop for all the weeks ( for

Dear R-people, I am trying to read a matlab file, unfortunately without success. I enclosed the zipped file. Do you have an idea how to read this file by ReadMat package into the R system? Thanks for your time! Wim Krijnen

Hello I need to run an r-file that works on Windows on MAC. The first lines of the file are: library(R.matlab) library(Rcompression) Somehow I cannot find where Rcompression is. Am I missing something? Many thanks Ed

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

To make R.matlab's readMat work for me[1] I needed access to zlib's uncompress function. R already links with zlib, and sometime last year I hobbled together a quick package to get at a few functions. It's my first package, so I would love feedback both on the package and its purpose. I've dropped a temporary copy at http://jriedy.users.sonic.net/internalzlib_0.1.tar.gz Could

Dear R users, I work with Matlab & R simultaneously. Usually I used to read successfully mat files (cell, structure, etc.) into R, till Matlab 2011b release. For reading mat files (or maybe I should say, converting it into R variable or structure) I’m using *readMat* (from “R.matlab” package). Even saving mat files in one of the previous formats (which can bet set in preference panel)

Hi: I've looked around and I must be missing it because it's probably somewhere. Does someone know how to convert an object of class dgCmatrix to a regular matrix. I can send someone the data if they need it but it's too big to include here. I read the data in using temp<-readMat("movielens.mat") where readMat is from the R.matlab package. But the resulting 2 matrices

Hi, I'm trying to read a .mat file into R (2.11.1) with medium success so far. The file I have is a MATLAB 5.0 MAT-file exported from RiverSurveyor LIVE software (http://www.sontek.com/software.php). I have R.matlab and Rcompression installed and readMat() starts reading the file, as can be seen in verbose mode (hence medium success), but then gives the following error: Error in dim(matrix)