I'm using Processing 3 for generating a Treemap.I installed gicentreUtils and placed TreeMappa file in the library folder of Processing. I'm getting nullPointerException in line:
pTreeMappa = new PTreeMappa(this).
The full code can be found in this link
Can someone please let me know how to resolve this error.
Thanks
It seems the TreeMapa library hasn't been updated in a few years and internally it may use some Processing code that changed from version 2.x to 3.x (like windows/frames/etc.) which is why the error might occur.
I advise using TreeMapa with Processing 2.2.1 available on the Processing Downloads page