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BUG: Correct Np when weighting is applied #229

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Mar 29, 2017
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BUG: Correct Np when weighting is applied #229

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3 changes: 3 additions & 0 deletions radiomics/glrlm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -197,6 +197,9 @@ def _applyMatrixOptions(self, P_glrlm, angles):
# Optionally apply a weighting factor
if self.weightingNorm is not None:
self.logger.debug('Applying weighting (%s)', self.weightingNorm)
# Correct the number of voxels for the number of times it is used (once per angle), affects run percentage
self.coefficients['Np'] *= len(angles)

pixelSpacing = self.inputImage.GetSpacing()[::-1]
weights = numpy.empty(len(angles))
for a_idx, a in enumerate(angles):
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