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FIX: Do not transpose (see scipy.ndimage.map_coordinates docs) #207

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merged 1 commit into from
May 18, 2024
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FIX: Do not transpose (see scipy.ndimage.map_coordinates docs) #207

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5 changes: 2 additions & 3 deletions nitransforms/nonlinear.py
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Original file line number Diff line number Diff line change
Expand Up @@ -160,7 +160,6 @@ def map(self, x, inverse=False):
if inverse is True:
raise NotImplementedError

x = np.array(x)
ijk = self.reference.index(x)
indexes = np.round(ijk).astype("int")

Expand All @@ -172,7 +171,7 @@ def map(self, x, inverse=False):
tuple(
map_coordinates(
self._field[..., i],
ijk.T,
ijk,
order=3,
mode="constant",
cval=np.nan,
Expand All @@ -183,7 +182,7 @@ def map(self, x, inverse=False):
).T

# Set NaN values back to the original coordinates value = no displacement
new_map[np.isnan(new_map)] = x[np.isnan(new_map)]
new_map[np.isnan(new_map)] = np.array(x)[np.isnan(new_map)]
return new_map

def __matmul__(self, b):
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