Re: [R] R and reading matlab compressed files

2007-11-21 Thread Suresh Krishna

One possibility is to save in ASCII format from Matlab (save -ascii)

Suresh

 On 17/11/2007, Prof Leslie Smith [EMAIL PROTECTED] wrote:
 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 make it work yet!), but I'd rather not run Matlab  R
 together: I'd like to use R to read matlab files on machines not  
 licensed
 for matlab!

 Are there any ways to make this work?

 --Leslie Smith

 --
 Prof Leslie Smith
 Computing Science and Maths
 University of Stirling FK9 4LA
 Scotland
 Tel (44) 1786 467435

 --
 The University of Stirling is a university established  
 i...{{dropped:11}}

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Re: [R] R and reading matlab compressed files

2007-11-20 Thread John C Frain
According to the Octave manual (page 146 of Edition 3 for Octave
version 2.9.16) Octave can read Matlab version 7 files.  It can also
output with similar options to Matlab.  As there are no issues or
licencing problems when running Octave and R on the one machine.  Note
that there is a new native Windows version of Octave now available
that does not require cygwin.

Best Reards

John

On 17/11/2007, Prof Leslie Smith [EMAIL PROTECTED] wrote:
 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 make it work yet!), but I'd rather not run Matlab  R
 together: I'd like to use R to read matlab files on machines not licensed
 for matlab!

 Are there any ways to make this work?

 --Leslie Smith

 --
 Prof Leslie Smith
 Computing Science and Maths
 University of Stirling FK9 4LA
 Scotland
 Tel (44) 1786 467435

 --
 The University of Stirling is a university established i...{{dropped:11}}

 __
 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, reproducible code.



-- 
John C Frain
Trinity College Dublin
Dublin 2
Ireland
www.tcd.ie/Economics/staff/frainj/home.html
mailto:[EMAIL PROTECTED]
mailto:[EMAIL PROTECTED]

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and provide commented, minimal, self-contained, reproducible code.


Re: [R] R and reading matlab compressed files

2007-11-19 Thread Hans W Borchers
Prof Leslie Smith lss at cs.stir.ac.uk writes:

 
 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 make it work yet!), but I'd rather not run Matlab  R
 together: I'd like to use R to read matlab files on machines not licensed
 for matlab!
 
 Are there any ways to make this work?
 
 --Leslie Smith
 

You can save data in Matlab with the '-ASCII' option (see 'help save') which 
makes them easily readable by R or any other numerical software. By also zipping
the file it will be comparable in size to the binary '.mat' format.

Hans Werner

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and provide commented, minimal, self-contained, reproducible code.


Re: [R] R and reading matlab compressed files

2007-11-19 Thread Henrik Bengtsson
Hi.

On 11/17/07, Prof Leslie Smith [EMAIL PROTECTED] wrote:
 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)).

See help(readMat), which says From Matlab v7, _compressed_ MAT
version 5 files are used by default [3]. These are not supported. Use
'save -V6' in Matlab to write a MAT file compatible with Matlab v6,
that is, to write a non-compressed MAT version 5 file. Note: Do not
mix up version numbers for the Matlab software and the Matlab file
formats.

This should do if you have access to Matlab and you're in charge of
the MAT files.

Hope this helps

Henrik


 I know I should be able to make R call Matlab and transfer data (not that
 I managed to make it work yet!), but I'd rather not run Matlab  R
 together: I'd like to use R to read matlab files on machines not licensed
 for matlab!

 Are there any ways to make this work?

 --Leslie Smith

 --
 Prof Leslie Smith
 Computing Science and Maths
 University of Stirling FK9 4LA
 Scotland
 Tel (44) 1786 467435

 --
 The University of Stirling is a university established i...{{dropped:11}}

 __
 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, reproducible code.


__
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, reproducible code.