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Add check if radars tuple is not empty #991

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merged 2 commits into from
Apr 29, 2021
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Merged

Add check if radars tuple is not empty #991

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0e40515
added check if radar tuple is not empty
Quba1 Apr 29, 2021
9268591
Update grid_mapper.py
Quba1 Apr 29, 2021
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3 changes: 3 additions & 0 deletions pyart/map/gates_to_grid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,9 @@ def map_gates_to_grid(
if isinstance(radars, Radar):
radars = (radars, )

if len(radars) == 0:
raise ValueError('Length of radars tuple cannot be zero')

skip_transform = False
if len(radars) == 1 and grid_origin_alt is None and grid_origin is None:
skip_transform = True
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6 changes: 6 additions & 0 deletions pyart/map/grid_mapper.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,9 @@ def grid_from_radars(radars, grid_shape, grid_limits,
if isinstance(radars, Radar):
radars = (radars, )

if len(radars) == 0:
raise ValueError('Length of radars tuple cannot be zero')

# map the radar(s) to a cartesian grid
if gridding_algo == 'map_to_grid':
grids = map_to_grid(radars, grid_shape, grid_limits, **kwargs)
Expand Down Expand Up @@ -396,6 +399,9 @@ def map_to_grid(radars, grid_shape, grid_limits, grid_origin=None,
# make a tuple if passed a radar object as the first argument
if isinstance(radars, Radar):
radars = (radars, )

if len(radars) == 0:
raise ValueError('Length of radars tuple cannot be zero')

skip_transform = False
if len(radars) == 1 and grid_origin_alt is None and grid_origin is None:
Expand Down