model.breaks result interpretation

ghost commented 5 years ago

Hey there !

Thanks for the python implementation of the bfast algo ! However, I'm still a bit confused about the results of the "model.breaks" array. What are the meanings of the values "-2", "-1", etc. I guess that the positive values corresponds to the index of the image where the break is detected ?

Thanks for the clarifications !

gieseke commented 5 years ago

Hi

very good point, I think this was not mentioned in the documentation yet. Sorry about that.

A -2 corresponds to pixels for which not sufficient non-NaN values are available (less than 5 values)
A -1 corresponds to "no break detected"
An idx>=0 corresponds to the first break in the monitoring period detected by BFASTMonitor.

I have added a more detailed description to both the breaks and the means property of the BFASTMonitor class (to the develop branch). Will be part of the next release.

You can also have a look examples/peru_small_opencl.py, which illustrates the breaks and means a bit more.

Thanks again, Fabian

ghost commented 4 years ago

Thank you very much ! Very clear now !

diku-dk / bfast

model.breaks result interpretation #1