LSST Applications g0265f82a02+c6dfa2ddaf,g1162b98a3f+b2075782a9,g2079a07aa2+1b2e822518,g2bbee38e9b+c6dfa2ddaf,g337abbeb29+c6dfa2ddaf,g3ddfee87b4+a60788ef87,g50ff169b8f+2eb0e556e8,g52b1c1532d+90ebb246c7,g555ede804d+a60788ef87,g591dd9f2cf+ba8caea58f,g5ec818987f+864ee9cddb,g858d7b2824+9ee1ab4172,g876c692160+a40945ebb7,g8a8a8dda67+90ebb246c7,g8cdfe0ae6a+4fd9e222a8,g99cad8db69+5e309b7bc6,g9ddcbc5298+a1346535a5,ga1e77700b3+df8f93165b,ga8c6da7877+aa12a14d27,gae46bcf261+c6dfa2ddaf,gb0e22166c9+8634eb87fb,gb3f2274832+d0da15e3be,gba4ed39666+1ac82b564f,gbb8dafda3b+5dfd9c994b,gbeb006f7da+97157f9740,gc28159a63d+c6dfa2ddaf,gc86a011abf+9ee1ab4172,gcf0d15dbbd+a60788ef87,gdaeeff99f8+1cafcb7cd4,gdc0c513512+9ee1ab4172,ge79ae78c31+c6dfa2ddaf,geb67518f79+ba1859f325,geb961e4c1e+f9439d1e6f,gee10cc3b42+90ebb246c7,gf1cff7945b+9ee1ab4172,w.2024.12
LSST Data Management Base Package
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Classes | Functions
lsst.meas.algorithms.measureApCorr Namespace Reference

Classes

class  _FluxNames
 
class  MeasureApCorrConfig
 
class  MeasureApCorrError
 
class  MeasureApCorrTask
 

Functions

 plotApCorr (bbox, xx, yy, zzMeasure, field, title, doPause)
 

Function Documentation

◆ plotApCorr()

lsst.meas.algorithms.measureApCorr.plotApCorr ( bbox,
xx,
yy,
zzMeasure,
field,
title,
doPause )
Plot aperture correction fit residuals

There are two subplots: residuals against x and y.

Intended for debugging.

Parameters
----------
bbox : `lsst.geom.Box2I`
    Bounding box (for bounds)
xx, yy : `numpy.ndarray`, (N)
    x and y coordinates
zzMeasure : `float`
    Measured value of the aperture correction
field : `lsst.afw.math.ChebyshevBoundedField`
    Fit aperture correction field
title : 'str'
    Title for plot
doPause : `bool`
    Pause to inspect the residuals plot? If
    False, there will be a 4 second delay to
    allow for inspection of the plot before
    closing it and moving on.

Definition at line 363 of file measureApCorr.py.

363def plotApCorr(bbox, xx, yy, zzMeasure, field, title, doPause):
364 """Plot aperture correction fit residuals
365
366 There are two subplots: residuals against x and y.
367
368 Intended for debugging.
369
370 Parameters
371 ----------
372 bbox : `lsst.geom.Box2I`
373 Bounding box (for bounds)
374 xx, yy : `numpy.ndarray`, (N)
375 x and y coordinates
376 zzMeasure : `float`
377 Measured value of the aperture correction
378 field : `lsst.afw.math.ChebyshevBoundedField`
379 Fit aperture correction field
380 title : 'str'
381 Title for plot
382 doPause : `bool`
383 Pause to inspect the residuals plot? If
384 False, there will be a 4 second delay to
385 allow for inspection of the plot before
386 closing it and moving on.
387 """
388 import matplotlib.pyplot as plt
389
390 zzFit = field.evaluate(xx, yy)
391 residuals = zzMeasure - zzFit
392
393 fig, axes = plt.subplots(2, 1)
394
395 axes[0].scatter(xx, residuals, s=3, marker='o', lw=0, alpha=0.7)
396 axes[1].scatter(yy, residuals, s=3, marker='o', lw=0, alpha=0.7)
397 for ax in axes:
398 ax.set_ylabel("ApCorr Fit Residual")
399 ax.set_ylim(0.9*residuals.min(), 1.1*residuals.max())
400 axes[0].set_xlabel("x")
401 axes[0].set_xlim(bbox.getMinX(), bbox.getMaxX())
402 axes[1].set_xlabel("y")
403 axes[1].set_xlim(bbox.getMinY(), bbox.getMaxY())
404 plt.suptitle(title)
405
406 if not doPause:
407 try:
408 plt.pause(4)
409 plt.close()
410 except Exception:
411 print("%s: plt.pause() failed. Please close plots when done." % __name__)
412 plt.show()
413 else:
414 print("%s: Please close plots when done." % __name__)
415 plt.show()