Comments on: File and Folder Comparison Tool Update in R2008a

By: Seth Popinchalk

Seth Popinchalk — Sat, 30 May 2009 12:53:48 +0000

@Joe Kelly – I’m not sure which version you are using, but since the web release of R2008b we have introduced an XML text comparing capability that you may be interested in evaluating. MATLAB Report Generator has the capability to create a comparison report for a pair of XML text files. In addition, Simulink Report Generator can use that capability to create a comparison report for pairs of XML text files, including an option to compare XML files exported from Simulink models. The XML comparison report can then display highlighted results in the original models. Please evaluate these new features in MATLAB Report Generator and Simulink Report Generator.

All of these features are available through the file and directory comparison tool. You can even compare Simulink manifests which is extremely helpful if your Simulink models depend on many libraries and reference models.

By: Ken

Ken — Fri, 29 May 2009 10:39:45 +0000

Hi Joe, I'm not sure, but I'll forward this question over to Seth. -Ken

By: Joe Kelly

Joe Kelly — Thu, 28 May 2009 23:42:18 +0000

Restatiting Georg’s question, is there a simulink model comparison tool existing or in-work? I and my colleagues would be very interested in a simulink model comparison tool that would pick up substantive changes. Existing text comparison tools pick up changes such as block size/location, etc.

By: Ken

Ken — Wed, 06 May 2009 11:23:31 +0000

Hi Rishab, There's no function that will give you diff output in the Command Window, but you can call visdiff from the command line, which will bring up the visual tool. -Ken

By: Rishab

Rishab — Wed, 06 May 2009 05:55:04 +0000

Wonderful tool. But is there a function I can call to generate the same output (e.g. the comparison of two M-files) rather than using the desktop tool?

By: Mike

Mike — Tue, 31 Mar 2009 15:21:14 +0000

Koos,

Thank you for those suggestions.

By: Koos

Koos — Thu, 26 Mar 2009 09:33:01 +0000

I would like to compare two (or more) large parameter definition m files. The files can grow large. So does the report, also when there are only a few lines with differences.
Therefore I would fancy a report option which only lists the differences and leaves out the rest (equal etc).
Likewise differences with only blancs should be optionally ignored.
The report should be storable as a file.
Preferably, this whole procedure should be runable from a script of function.

By: Mike

Mike — Tue, 17 Jun 2008 12:52:24 +0000

That’s a great idea.

By: Anand

Anand — Mon, 16 Jun 2008 20:07:37 +0000

Is there any tool (either matlab/third party) that compares two matlab models and give graphaic view of the diffrence? I am talking about model .mdl file

By: Malcolm Wood

Malcolm Wood — Tue, 13 May 2008 13:54:52 +0000

Han,

The MAT-file differencing mechanism uses the MATLAB “==” operator, but for Simulink.Parameter objects this operator asks “are these the same object?”, which is not the right question. For example:

>> x1 = Simulink.Parameter
>> x2 = Simulink.Parameter
>> x1==x2

ans =

For these objects, it turns out that the “isContentEqual” method is the right one to use:

>> isContentEqual(x1,x2)

ans =

But that’s probably not true for other types of object. Java programmers will be familiar with this sort of problem. I’ll look into whether there’s a general solution to it here.

Malcolm