MATLAB: Is there a way to use a “.bat” file to call a MATLAB script from a MATLAB command line without the bat file opening up a new MATLAB session

bat filesdos

I have a MATLAB session already opened. I would type the following from the command line: dos('temp.bat'). This would result in the opening up of a new MATLAB session within which the results are generated and outputted. I am trying to prevent this new MATLAB session from opening up. I would prefer if the results generated by the MATLAB script would be outputted within the same MATLAB session from which the "dos" command was used.

The current syntax of 'temp.bat' is as follows: "matlab.exe" -r "filename"

Thanks

Floyd

Best Answer

"matlab.exe" -nodisplay -r "filename"

This will cause MATLAB to output to standard output, which will be read by your dos() command when the invoked MATLAB session finally finishes.

By the way, your -r should not be filename, it should be a command -- which could be the name of a script or the name of a function that you have stored in a file. Just don't put the .m in the -r string.

Related Solutions

MATLAB: How to open multiple MATLAB/SIMULINK files using only one MATLAB session

This enhancement has been incorporated in Release 2007a (R2007a). For previous product releases, read below for any possible workarounds:

The capability of evoking a single MATLAB session and using only that session during batch processing (DOS script) is not currently available.

To work around this issue, please consider using a Windows Scripting Host and write a VBScript file to call MATLAB. Please see below for an example:

Open a blank text file and in it, write the following code :

' callmatlab.vbs
set Matlab = WScript.CreateObject("Matlab.Application")
' first operation
Matlab.Execute( "uiwait(msgbox('Hello', 'Hello World'))" )
' second operation
Matlab.Execute( "uiwait(msgbox('World!', 'Hello World Again '))" )
' now quit MATLAB
Matlab.Quit

then save this file as callmatlab.vbs and double click it from Windows Explorer.

You will notice that a single MATLAB opens.

MATLAB: Running the bat file

When the new process is spawned, it inherits default environment (PATH and other variables). If python isn't installed on that default path, it won't be found. Have the .bat file set any environment variables it needs or modify the startup environment to make that a global setting all sessions will inherit. The former is probably the more appropriate rather than modifying system.

Best Answer

Related Solutions

MATLAB: How to open multiple MATLAB/SIMULINK files using only one MATLAB session

MATLAB: Running the bat file

Related Question