[GRASS-dev] [GRASS GIS] #3415: Mark raster NULL values as None in PyGRASS

[GRASS GIS]

#3415: Mark raster NULL values as None in PyGRASS
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 Reporter:  marisn       |      Owner:  grass-dev@…
     Type:  defect       |     Status:  new
 Priority:  normal       |  Milestone:  7.4.0
Component:  PyGRASS      |    Version:  unspecified
 Keywords:               |        CPU:  Unspecified
 Platform:  Unspecified  |
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 At the moment PyGRASS is providing raster NULL values as is (i.e. for CELL
 type they are marked as -2147483648). There is no function to check if
 value is NULL (in C it is done with Rast_is_c/f/d_null_value).

 The best would be to replace raster NULL values with None when raster is
 read and None with NULL representation when it is written back. Such
 approach would greatly simplify use of rasters in PyGRASS (i.e. "if
 myrast[row][col] is not None:")

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3415>
GRASS GIS <https://grass.osgeo.org>