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add handling of reduced_ll pl array with 0 values ie local reduced_ll… #311

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Merged
merged 7 commits into from
Jan 28, 2025
Merged

add handling of reduced_ll pl array with 0 values ie local reduced_ll… #311

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254b116
add handling of reduced_ll pl array with 0 values ie local reduced_ll…
mathleur Jan 27, 2025
ce488a8
remove the south pole from reduced ll grid
mathleur Jan 27, 2025
78095ef
try to fix reduced_ll grid for res 3601
mathleur Jan 28, 2025
0860f11
try to fix reduced_ll grid for res 3601
mathleur Jan 28, 2025
e4075b1
try to fix reduced_ll grid for res 3601
mathleur Jan 28, 2025
f1a808a
try to fix reduced_ll grid for res 3601
mathleur Jan 28, 2025
8885c30
clean up
mathleur Jan 28, 2025
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12 changes: 9 additions & 3 deletions polytope_feature/datacube/transformations/datacube_mappers/mapper_types/reduced_ll.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,8 +22,11 @@ def __init__(self, base_axis, mapped_axes, resolution, md5_hash=None, local_area
raise NotImplementedError("Reduced lat-lon grid with first axis in decreasing order is not supported")

def first_axis_vals(self):
start_lat = 90
if self._resolution == 3601:
start_lat = 89.973092
resolution = 180 / (self._resolution - 1)
vals = [-90 + i * resolution for i in range(self._resolution)]
vals = [round(start_lat - i * resolution, 12) for i in range(self._resolution)]
return vals

def map_first_axis(self, lower, upper):
Expand Down Expand Up @@ -5084,8 +5087,11 @@ def lon_spacing(self):
def second_axis_vals(self, first_val):
first_idx = self._first_axis_vals.index(first_val[0])
Ny = self.lon_spacing()[first_idx]
second_spacing = 360 / Ny
return [i * second_spacing for i in range(Ny)]
if Ny != 0:
second_spacing = 360 / Ny
return [i * second_spacing for i in range(Ny)]
else:
raise ValueError("Requested latitude value is not within reduced latitude-longitude grid bounds")

def map_second_axis(self, first_val, lower, upper):
axis_lines = self.second_axis_vals(first_val)
Expand Down
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