Mike on the MATLAB Desktop

January 17th, 2011

In MATLAB R2008a, we introduced the ability to compare MAT-files with the File and Folder Comparison Tool. In MATLAB R2010b, the team has added additional detail to the MAT-file comparisons. This includes the size and type of the variables in the MAT-file. While pretty simple, having this summary in the comparison reports saves you from having to open both files in the variable editor to see these changes.

This is what the MAT-file comparisons looked like before:

R2008a MAT-file Comparison

And now they have this additional detail. Pretty sweet.

R2010b MAT-file Comparison

By Michael Katz

Mike is a developer on the MATLAB Mobile team. When not describing himself in the third person, biking, homebrewing, or rooting for the home team, he's busy trying to make the world a better place for programming.

22:09 UTC | Posted in Current Directory | Permalink | 6 Comments »

You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

6 Responses to “MAT-File Comparisons”

1. Jim replied on January 18th, 2011 at 09:10 UTC :
   

   Very interesting! Unfortunately I am only on 2007b. However I would be interested in knowing what sort of homebrewing you do… !

2. Aurelien Queffurust replied on January 18th, 2011 at 14:10 UTC :
   

   with R2011a Pre-release you can even merge the MAT-files … again a good reason to upgrade ;)

   Aurélien

3. Mike replied on January 18th, 2011 at 14:16 UTC :
   

   @Aurelien,

   Hey! No stealing the good stuff from the Big Unveil.

   @Jim,
   Wow 7b, that feels like ancient software these days. It’s amazing how each of these little 6-month features add up over a few years. As for the homebrewing, we just finished the last of a holiday porter. A friend gave me about a pound of fresh hops from his garden, so I’m thinking of some kind of IPA for the spring-time.

4. per isakson replied on January 18th, 2011 at 15:37 UTC :
   

   @Jim

   WHOS -FILE FILENAME provides all information needed on the file contents.

   There are several options to compare the outputs of WHOS.
   1. Search the FEX
   2. Use the half-documented function VISDFF

   e.g.
   diary(‘f1.txt’)
   whos …
   diary off

   diary(‘f2.txt’)
   whos …
   diary off

   visdiff( ‘f1.txt’, ‘f2.txt’ )

   or

   s1 = whos( …
   diary(‘f1′)
   disp(s1)
   diary off

   / per

5. per isakson replied on January 18th, 2011 at 16:19 UTC :
   

   @Jim
   In addition see STRUCTCOMPVIS by Scott Hirsch in the FEX. The outline above is based on that contribution. (I missed it in my previous search.)
   / per

6. Yair Altman replied on January 19th, 2011 at 08:04 UTC :
   

   You can also use my ObjDiff utility in FEX: http://www.mathworks.com/matlabcentral/fileexchange/14395-objdiff-generic-object-comparator

   objDiff Compares objects of many different types including Java, Matlab, HG handles, structs, cells & arrays

   - Yair

Leave a Reply

<pre class="code">
a = magic(3);
sum(a)
</pre>

These postings are the author's and don't necessarily represent the opinions of The MathWorks.