Having trouble reading v7.3 MATLAB mat file with MATLAB Data Plugin [1.4.06900]

[gangxu]

Hi guys,

I tried to read some mat files with MATLAB Data Plugin [1.4.06900]. The vi works perfect with v5 or v7, but not able to read v7.3. Is anyone having this issue as well?

I am using LabVIEW 2016 Professional and MATLAB 2017a.

Thank you very much.

http://www.ni.com/example/29178/en/

File Extension:	*.MAT
Direction:	Read / Write
Last Change:	November 22, 2017 [1.4.06900]
Update Information:	The following changes have been made to this version:  Added support for MATLAB version 7.3 files

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

[luda.mattski]

Hi gangxu,

Do you have a sample data set that we could use to try and reproduce this in-house?

[gangxu]

Hi Matt,

Thanks for you reply.

To run this test vi, please install MATLAB data plugin.

http://www.ni.com/example/29178/en/

I've have a couple of mat files attached in the zip file.

The mat files have identical variables inside.

>> save('D:\MAT_file_v7.3.mat','sine_signal','cosine_signal','-v7.3');
>> save('D:\MAT_file_v7.mat','sine_signal','cosine_signal','-v7');
>> save('D:\MAT_file_v6.mat','sine_signal','cosine_signal','-v6');
>> save('D:\MAT_file_v4.mat','sine_signal','cosine_signal','-v4');

Only v7.3 mat file fails.

[luda.mattski]

Really solid description - I reproduced this here and will let our DataPlugin R&D know.  Are you able to work around this for the time being or has this stopped your development?

[gangxu]

Hi Matt,

Thanks for the support. I can deal with the mat file reading later. No big issue. Just wanna make sure it is a bug or my misunderstanding.

Thanks again.

Gang

[luda.mattski]

No problem.  Like I said, I looped in our DataPlugins team and they're in the process of digging into this.  I can't comment definitively on when the fix will be available but we'll keep you updated. 

[gangxu]

Thanks Matt.