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replace hand-coded interpolation with map_coordinate #369

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replace hand-coded interpolation with map_coordinate #369

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90bc90c
replace hand-coded interpolation with map_coordinate
Jul 23, 2026
9280d62
Correct error -- coordinates need to be transposed
Jul 23, 2026
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11 changes: 4 additions & 7 deletions bdsf/gausfit.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,6 @@ class and a number of fitter routines in _cbdsm module.
from . import multi_proc as mp
import itertools


class Op_gausfit(Op):
"""Fit a number of 2D gaussians to each island.

Expand Down Expand Up @@ -448,12 +447,10 @@ def fit_island(self, isl, opts, img, ngmax=None, ffimg=None, ini_gausfit=None):
mompara = func.momanalmask_gaus(fit_image, mask_id, isl.island_id, pixel_beamarea, True)
mompara[5] += 90.0
if not N.isnan(mompara[1]) and not N.isnan(mompara[2]):
x1 = int(N.floor(mompara[1]))
y1 = int(N.floor(mompara[2]))
t = (mompara[1]-x1)/(x1+1-x1)
u = (mompara[2]-y1)/(y1+1-y1)
s_peak = ((1.0-t) * (1.0-u) * fit_image[x1, y1] + t * (1.0-u) * fit_image[x1+1, y1] +
t * u * fit_image[x1+1, y1+1] + (1.0-t) * u * fit_image[x1, y1+1])
s_peak = nd.map_coordinates(fit_image,
[ [mompara[1]],
[mompara[2]] ],
order = 1)[0]
mompara[0] = s_peak
par = mompara.tolist()
par[3] /= fwsig
Expand Down