forestatrisk.countpix(input_raster, value=1, blk_rows=0)

Count the number of pixels having a specific value.

Count the number of pixels (and the corresponding area in ha) having a specific value.

Parameters:

• input_raster – Input raster file.

• value – Target value.

• blk_rows – if > 0, number of lines per block.

Returns:

A dictionary with the number of pixels having the specified value (npix) and the total area (area, in ha).

forestatrisk.invlogit(x)

Compute the inverse-logit of a numpy array.

We differenciate the positive and negative values to avoid under/overflow with the use of exp().

Parameters:

x – Numpy array.

Returns:

Return the inverse-logit of the array.

forestatrisk.make_dir(newdir)

Make new directory

• Already exists, silently complete

• Regular file in the way, raise an exception

• Parent directory(ies) does not exist, make them as well

Parameters:

newdir – Directory path to create.