How to properly using visdiff in command line with mat files ?

Hello all,

I am trying to compare m files that contains parameters that are not stored in specific lines.

The only way to do so I found is to :

• Run the first m file manually and save resulting workspace in a first mat file
• Run the second m file manually and save resulting workspace in a second mat file
• right clic with both selected and use compare option
• Analyse the differences (my real goal/activity)
• Deleting the mat files

As the overall process of having a GUI is a pain and not really adding value, I am trying to automating evrey step.

But when programmatically compare 2 sets of matlab variables that are stored in temporary mat files.

(My code stores the files in a temp directory so that once the comparison is done, I can delete them.)

Here is a simplified version of my code :

tmpfolder = tempname;
file1 = horzcat(tempname(tmpfolder), '.mat');
file2 = horzcat(tempname(tmpfolder), '.mat');
% file1 and file2 are filled with data
visdiff(file1, file2);
% want to wait here
rmdir(tmpfolder, 's');

The difficulty is that as soon as I run the rmdir command, the visdiff interface freeze and the result of the comparison even does not show up.

Am I doing something the wrong way ?

(Maybe visdiff is not the right tool)

Is there a way to make my code wait for the finished comparison to go to the rmdir command ?

(I already tried the pause(N) and a loop based on desktop = com.mathworks.mde.desk.MLDesktop.getInstance(); but both does not work)

Thanks in advance.

Best regards.

[Fangjun Jiang]

What do you try to do by "tempname(tmpfolder)"??

[Elie Lusseau]

tmpfolder = tempname;
file1 = horzcat(tempname(tmpfolder), '.mat');

Is used to create a file in a temp folder that I will be able to delete at the end.

tempname create a folder in %temp% with a unique name.

tempname(tmpfolder) create a unique file name in the said folder.

Answer 1

[chrisw23]

try to start a new MatLab session

modify this cmd line as needed

matlab -wait -nodesktop -r "visdiff( \"\"{<file1>}\"\",\"\"{<file2>}\"\")"

[Elie Lusseau]

Thanks for the answer

By modifying the command this way :

system(['matlab -wait -nodesktop -r "visdiff(''', file1, ''', ''', file2, ''')'])

I manage to run a proper separate matlab environment.

Unfortunately, I retrieve an error pop-up (not in command windows) :

Error : Connector is not running. Use connector.ensureServiceOn() to ensure it is running before using it.