CODEWITHSUNDEEP
javamatlab
Greg
Greg

Reputation: 11

Using Java to Command Matlab

I'm trying to use use Matlab to:

  1. Create a new Java process to spawn a 2nd instance of Matlab and then

  2. Write a command to that 2nd instance of Matlab from the first instance of Matlab.

The code seems to run fine, but I don't see anything appear in the command window of the 2nd Matlab instance. What am I doing wrong?

The code I've tried is:

% Start a 2nd instance of Matlab
MatlabProcess = java.lang.Runtime.getRuntime().exec('matlab -nosplash');
pause(20); % I don't know if this pause is really needed.

% Set up a buffered Java stream writer to write to the new Matlab Process
OutputStream            = MatlabProcess.getOutputStream();
OutputStreamWriter      = java.io.OutputStreamWriter(OutputStream);
OutputBufferedWriter    = java.io.BufferedWriter(OutputStreamWriter);

% Write some text to the 2nd Matlab Instance
OutputBufferedWriter.write('pi\n');
OutputBufferedWriter.flush();

Upvotes: 1

Views: 1083

Answers (1)

Ben Voigt
Ben Voigt

Reputation: 283823

I believe you get either a command window, or use of stdin/stdout, not both, depending on whether the matlab process is interactive.

Upvotes: 1

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