Implements Prediction Mask for Pixel Classification

[Tomaz-Vieira]

This still doesn't work as a backwards compatible macro,
since using pixel classification as a macro will require the
value for 'useMask'.

I could not find a way to have this extra parameter with a default
value that would be picked up also by the macro usage. Either
the input is marked as resolved and doesn't show up in the UI,
or it is not marked as resolved, but requires the macro usage to specify
the value interactively.

fixes #7

[imagejan]

Did you try:

Suggested change

	public Dataset predictionMask;
	public Dataset predictionMask = null;

to see whether that solves the issue with a default value?

[k-dominik]

I'm also hitting an error with the ci, anyone know how to resolve it?

[ERROR]     Non-resolvable parent POM for org.ilastik:ilastik4ij:1.7.4-SNAPSHOT:
Could not transfer artifact org.scijava:pom-scijava:pom:26.0.0
from/to scijava.public (https://maven.scijava.org/content/groups/public):
Transfer failed for https://maven.scijava.org/content/groups/public/org/scijava/pom-scijava/26.0.0/pom-scijava-26.0.0.pom
500 Server Error and 'parent.relativePath' points at no local POM @ line 5, column 13

looks like we reference a dependency that's not there anymore (since yesterday?!)

[imagejan]

I'm also hitting an error with the ci, anyone know how to resolve it?

That's a temporary issue with server hosting maven.scijava.org.
As far as I know, @ctrueden is on it to fix the problem. I'd recommend waiting until tomorrow and then re-starting the travis build.

[k-dominik]

I'm also hitting an error with the ci, anyone know how to resolve it?

That's a temporary issue with server hosting maven.scijava.org.
As far as I know, @ctrueden is on it to fix the problem. I'd recommend waiting until tomorrow and then re-starting the travis build.

phew, thank you @imagejan I already saw myself editing xml files...