NullPointer Exception (was: Using TrainableWeka objects in scripts)

Posted by Michael Schmid on Nov 25, 2013; 4:24pm
URL: http://imagej.273.s1.nabble.com/Using-TrainableWeka-objects-in-scripts-tp5005479p5005699.html

On Nov 23, 2013, at 21:09, Marcello DiStasio wrote:

> ... I am making a couple calls like this in python:
>
> IJ.run(imp_h, "Auto Threshold", "method=Li white")
>
> and getting java.lang.NullPointerException.  This does not happen when I
> run fiji from the command line, but on a computer that has X11.

Hi Marcello,

there should be a stack trace saying in which module and at which line the NullPointerException happens, and how it was called.
Without this information no one will have any clue what happens.

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By the way, as this seems to be a topic unrelated to 'TrainableWeka', it would have been nice to start a new thread in the mailing list for it.

Michael

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