How to store a matrix obtained in a particular file/directory??

Good morning.. In fact, say I am running a program which generates a parity-check matrix of size 1000X2000... I would like to know how to save that parity check matrix for later use without having to run the program each time since it takes a lot of time...

Answer 1

[Jan]

Data = rand(1000, 2000) > 0.3;  % Testdata
save(fullfile(tempdir, 'myParityCheck.mat'), 'Data', '-mat');

And reload the values:

FileData = load(fullfile(tempdir, 'myParityCheck.mat'));
Data     = FileData.Data;

[Synchronie]

Thanks.. It worked..

But where has it been saved actually?

Is there any restriction for the file name?

Like I would like to save it under 1000X2000matrix...

[Jan]

It is saved in tempdir, which replies your TEMP folder. Just type "tempdir" in the command window to find the location.

Answer 2

[Grzegorz Knor]

save command stores variable in a MATLAB formatted binary file (MAT-file):

save(filename, 'your_matrix')

To load data from MAT-file into workspace use load function:

load(filename)

[Synchronie]

I have tried as you mentionned for a 12X16 matrix for the time being..

save(12X16H_matrix, 'H1.mat')

I am getting an error saying unexpected matlab expression..

Is there anything I missed out ?

[Grzegorz Knor]

Is 12X16H_matrix your file name and H1 matrix name?

If so, then:

save('12X16H_matrix', 'H1')