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stamps2kite fix look angle interpolation #61

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stamps2kite fix look angle interpolation #61

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f3e68d1
stamps2kite interpolate_la added warning for pixels without la info
hvasbath Jul 15, 2020
ebb8622
stamps2kite: BUG fix radar coords indexing for gridding interpolation
hvasbath Jul 16, 2020
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16 changes: 13 additions & 3 deletions src/util/stamps2kite.py
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Original file line number Diff line number Diff line change
Expand Up @@ -147,7 +147,7 @@ def interpolate_look_angles(data):
data.px_width, data.px_length)
log.debug('Radar coordinates data: length %d - %d; width %d - %d',
data.radar_coords[1].min(), data.radar_coords[1].max(),
data.radar_coords[0].min(), data.radar_coords[0].max())
data.radar_coords[2].min(), data.radar_coords[2].max())
log.debug('Binned radar coordinate ranges: length %d - %d; width %d - %d',
num.nanmin(data.bin_radar_i), num.nanmax(data.bin_radar_i),
num.nanmin(data.bin_radar_j), num.nanmax(data.bin_radar_j))
Expand All @@ -158,12 +158,22 @@ def interpolate_look_angles(data):
.reshape(2, 2500)

radar_coords = num.vstack(
[data.bin_radar_j.ravel() - data.radar_coords[0].min(),
[data.bin_radar_j.ravel() - data.radar_coords[2].min(),
data.bin_radar_i.ravel() - data.radar_coords[1].min()])

interp = interpolate.LinearNDInterpolator(coords.T, data.look_angles)
data.bin_look_angles = interp(radar_coords.T).reshape(
bin_look_angles = interp(radar_coords.T).reshape(
*data.bin_ps_mean_v.shape)

npix_missing_la = num.isnan(
bin_look_angles[~num.isnan(data.bin_ps_mean_v)]).sum()

if npix_missing_la:
log.warning(
'Found %i pixels in displacements that have no look angle'
' information! This may result in errors later!' % npix_missing_la)

data.bin_look_angles = bin_look_angles
return interp


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