MATLAB Engine for Java

This library uses the C API of the MATLAB Engine to:

• put variables from Java to Matlab
• evaluate Matlab commands
• get results from Matlab to Java

Please feel free to use the Bug Tracking and Feature Request system.

Simple Example

This Java code:

MatlabEngine matlabEngine = new MatlabEngine();
matlabEngine.open(null);

matlabEngine.eval("x = sin([0:pi/2:2*pi])");
System.out.println(matlabEngine.getOutput());

DoubleMatrix doubleMatrix = (DoubleMatrix)matlabEngine.getVariable("x");
System.out.println("doubleMatrix = " + doubleMatrix.toString());

matlabEngine.close();

Prints the following to standard output:

x =

         0    1.0000    0.0000   -1.0000   -0.0000


doubleMatrix = [[0.0, 1.0, 1.2246467991473532E-16, -1.0, -2.4492935982947064E-16]]

Please have a look at the unit tests in the src package for more examples.

Test Console

mat4j.sh / mat4j.bat is a Java console application for evaluating Matlab commands.

Predefined Java commands:
exit / quit - Quits this application
get varname - Converts Matlab variables to Java objects and calls toString()
getImage hFigureVarName - Grabs a Matlab figure to a Java AWT Image

Example:

>> x = [1:5];
>> get x
[[1.0, 2.0, 3.0, 4.0, 5.0]]
>> x

x =

     1     2     3     4     5