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decode the grid_mapping attribute #17

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Merged
Chilipp merged 4 commits into from
Apr 7, 2020
Merged

decode the grid_mapping attribute #17

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903192a
decode the grid_mapping attribute
Chilipp Apr 7, 2020
5c8549d
add test for decoded grid_mappings
Chilipp Apr 7, 2020
93a6bc9
warn when dimension list matches multiples
Chilipp Apr 7, 2020
f72c3b8
update changelog
Chilipp Apr 7, 2020
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warn when dimension list matches multiples 
This commit treats matches with dimension lists
(such as CFDecoder.x) different than the
coordinates or axis attribute.
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@Chilipp
Chilipp committed Apr 7, 2020
commit 93a6bc91e7fa1487d15386425212f544e0fad737
15 changes: 11 additions & 4 deletions psyplot/data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -917,19 +917,26 @@ def get_variable_by_axis(self, var, axis, coords=None):
if not coord_names:
return
ret = []
matched = []
for coord in map(lambda dim: coords[dim], filter(
lambda dim: dim in coords, chain(
coord_names, var.dims))):
# check for the axis attribute or whether the coordinate is in the
# list of possible coordinate names
if coord.name not in (c.name for c in ret):
if coord.name in getattr(self, axis):
ret.clear()
ret.append(coord)
break
matched.append(coord)
elif coord.attrs.get('axis', '').lower() == axis:
ret.append(coord)
if ret:
if matched:
if len(matched) > 1:
warn("Found multiple matches for %s coordinate in the "
"coordinates: %s. I use %s" % (
axis, ', '.join([c.name for c in matched]),
matched[0].name),
PsyPlotRuntimeWarning)
return matched[0]
elif ret:
return None if len(ret) > 1 else ret[0]
# If the coordinates attribute is specified but the coordinate
# variables themselves have no 'axis' attribute, we interpret the
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