Matlab figures from ImageJ

[Walt Mankowski]

The most recent version of Matlab, 2016b, contains a new Engine API
for Java [1] which is a significant simplification over previous
methods of accomplishing this.

I've been experimenting with using it to access Matlab from an ImageJ
plugin. I've attached some sample code. I can set and get Matlab
variables and call Matlab functions successfully. However, if I try to
open a new window (e.g. via Matlab's "figure" function on line 42),
ImageJ crashes. When I try debugging it in Visual Studio, it reports:

  Unhandled exception at 0x000000005ED04F44 (jvm.dll) in ImageJ.exe:
  0xC0000005: Access violation reading location 0x0000000000000000.

That looks like Java's version of a null pointer exception.

It's entirely possible I'm doing something wrong on my end. But that
call to figure worked just fine when I tried it in Matlab's demo
code. Is ImageJ doing anything that would prevent an external process
from creating a window?

Walt

1. http://www.mathworks.com/help/matlab/matlab-engine-api-for-java.html


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