On 25 March 2017 20:21:18 Luca Delucchi <[email protected]> wrote:
Il 25/mar/2017 20:07, "Paulo van Breugel" <[email protected]> ha scritto: Hi, Hi, For a script I am working on, I am looking for a way to select a X number of raster cells and their values into a numpy array. I can create a layer with r.random, and read in that layer into a numpy array, but I rather avoid having to read in the whole raster layer. I can also from within the script run r.random to generate a raster layer, r.stats to export the resulting raster layer as a text file (with n flag), and than read in the text file in Python. But I wonder if there is not a more direct way to accomplish this.. You can read col and row from GRASS Region and use random python function to calculate random x and y and later query a pygrass raster object
Thanks. And what if I have a mask or null values in the target raster.
Cheers, Paulo Cheers Luca
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