Struggling with Converting a 2-D array of U8 data to a Matlab file format?

[PA_UW]

I am struggling trying to convert a simple 2-D array of U8 data (3 channels) to a matlab file format.  I have been manipulating the examples found in the labview2matlabni folder - but I can't get it to read in Matlab - the matrix is unreadable - says inconsistent number of columns. 

I have included my vi with a sample of the data saved as input.  I am sure this shouldn't be so difficult!

Thanks in advance - any help is appreciated!

[altenbach]

Do you have a link to a documentation of this file format?

You code seems overly complicated with a lot of unecessary operations. For example, to take the product of all dimensions, you could just do a "multiply array elements", no loop needed. 

Who wrote the two subVIs?

For example, the entire left side of your code could be written as follows:

[PA_UW]

The data is just three channels of U8 data - that is it in terms of format.  I just hacked a few of the examples (LabviewtoMatlabvi) I found on the ni site with what I thought I needed to save as .mat. 

[PA_UW]

These are all the .vis that I have found from searching the site - but none seem to work for me.  I keep getting the same error about the inconsistent number of columns and unable to extract matrix size from file.

[PA_UW]

I am still struggling with this problem - I cannot get this simple 3 channel array to be read in matlab - I have been exploring the matlab dataplugin but I can't make sense of it - I would really appreciate any help out there!

Thanks!

[altenbach]

I do have matlab here, but I am very unfamiliar with it. Can you show a few lines of matlab code to demonstrate how you are trying to read it? This way I can do some experiments myself. Thanks.

[mcduff · Accepted solution]

If you haven't doen this already,

You may want to check out this site, http://matio-labview.sourceforge.net/. I believe there are VIs for saving and importing .mat files.

Cheers,

mcduff

[PA_UW]

at this point I am just trying to load the file in with:

load('filename.mat")

size(val)

right now I can't get passed load!

thanks.

[PA_UW]

size(val)

should be something like

3  277453

[PA_UW]

I had not seen this:  http://matio-labview.sourceforge.net/

Thank-you so much!!  I think this solves it.  Not sure what was going on with those other programs...  but this one seems to work. 

Most appreciated - made my day!