Launching WWJ from MATLAB

[kluhm]

Question from a WWJ newbie.

I would like to run a WWJ application from MATLAB, as the data I am displaying is being generated through MATLAB and is part of a larger simulation. MATLAB does have the ability to run certain types of MATLAB code. I am coding in Eclipse.

I have written some classes will be using to format data that I generate from MATLAB. In this same Eclipse project, I have copied the Application Template class (for ease of calling it from MATLAB) and added one additional overloaded method:

    public static void start()
    {
       ApplicationTemplate.start("World Wind Application", AppFrame.class);
    }

because MATLAB will not allow calling from inner classes.

In my MATLAB class, I add the necessary imports, and then use the function call:

ApplicationTemplate.start();

I get a globe window that looks like it should, but the second I move my mouse to within the globe window (the side panel doesn't seem to matter) the blue marble disappears, and I am left with the atmosphere ring. Also, closing out of the Java window forces MATLAB to quit as well.

Is this look like an import problem, or is something more nuanced going on here?

[bhughes]

Hello,

I'm assuming you dropped the jogl.dll, jog_awt.dll, and gluegen-rt.dll into the Matlab sys\java\jre\bin directory (or pointed the MATLAB_JAVA system variable to the java version with these dlls). If this is all correct try using MATLAB version 2007b or 2008a. My World Wind application worked fine with these versions of MATLAB. However since 2008b the fine people at Mathworks changed something and so with MATLAB 2008b, 2009a, and 2009b my World Wind application no longer works. I’ve queried Mathworks as to what they changed, but nobody responded.

Also if you set your frame's default close behavior to EXIT_ON_CLOSE, MATLAB will close too. So you have to set the default behavior to DISPOSE.

[bhughes]

Actually my response was not fully correct. WWJ does work with MATLAB 2009b (in addition to MATLAB 2007b and 2008a). But WWJ will not run on MATLAB 2008b or MATLAB 2009a. So if you're using either one of those two MATLAB versions, you won't have any fun at all.