how to convert ,mat data file to R

Hi,

I recently got a task to convert a .mat data file into an R datafile.

I don't know how about R at all. So I am asking any leads on how to convert matlab .mat file into R based data file?

Thanks!

Answer 1

[Asad Mirza]

As far as I know R can read MATLAB data using read.mat. So taking the example from here.

>> x = rand(3,4,2)

x(:,:,1) =
      0.75127      0.69908      0.54722      0.25751
       0.2551       0.8909      0.13862      0.84072
      0.50596      0.95929      0.14929      0.25428
x(:,:,2) =
      0.81428      0.34998      0.61604      0.83083
      0.24352       0.1966      0.47329      0.58526
      0.92926      0.25108      0.35166      0.54972

>> save file.mat x

R> library(R.matlab)
R> data <- readMat('file.mat')
R> str(data)
List of 1
 $ x: num [1:3, 1:4, 1:2] 0.751 0.255 0.506 0.699 0.891 ...
 - attr(*, "header")=List of 3
  ..$ description: chr "MATLAB 5.0 MAT-file, Platform: PCWIN, Created on: ..."
  ..$ version    : chr "5"
  ..$ endian     : chr "little"
R> data$x
, , 1

       [,1]   [,2]   [,3]   [,4]
[1,] 0.7513 0.6991 0.5472 0.2575
[2,] 0.2551 0.8909 0.1386 0.8407
[3,] 0.5060 0.9593 0.1493 0.2543

, , 2

       [,1]   [,2]   [,3]   [,4]
[1,] 0.8143 0.3500 0.6160 0.8308
[2,] 0.2435 0.1966 0.4733 0.5853
[3,] 0.9293 0.2511 0.3517 0.5497

[JFz]

Thank you!

I tried it and there is an error message saying I have to convert my .mat file into v6.

After I converted it to v6, I can use read to load in the mat file.

Is there any function in R that can read any version of .mat file?

Thanks again.

[Trey Brown]

how did you convert it to the v6?

[Trey Brown]

Nevermind, my answer was found using the link below in case anyone else runs into it..

https://www.mathworks.com/help/matlab/import_export/mat-file-versions.html

[Tammun filistin]

Thank you All.