lsst.ip.diffim.utils Namespace Reference

Classes
class	DipoleTestImage

Functions
def	showSourceSet (sSet, xy0=(0, 0), frame=0, ctype=afwDisplay.GREEN, symb="+", size=2)
def	showKernelSpatialCells (maskedIm, kernelCellSet, showChi2=False, symb="o", ctype=None, ctypeUnused=None, ctypeBad=None, size=3, frame=None, title="Spatial Cells")
def	showDiaSources (sources, exposure, isFlagged, isDipole, frame=None)
def	showKernelCandidates (kernelCellSet, kernel, background, frame=None, showBadCandidates=True, resids=False, kernels=False)
def	showKernelBasis (kernel, frame=None)
def	plotKernelSpatialModel (kernel, kernelCellSet, showBadCandidates=True, numSample=128, keepPlots=True, maxCoeff=10)
def	showKernelMosaic (bbox, kernel, nx=7, ny=None, frame=None, title=None, showCenter=True, showEllipticity=True)
def	plotPixelResiduals (exposure, warpedTemplateExposure, diffExposure, kernelCellSet, kernel, background, testSources, config, origVariance=False, nptsFull=1e6, keepPlots=True, titleFs=14)
def	calcCentroid (arr)
def	calcWidth (arr, centx, centy)
def	printSkyDiffs (sources, wcs)
def	makeRegions (sources, outfilename, wcs=None)
def	showSourceSetSky (sSet, wcs, xy0, frame=0, ctype=afwDisplay.GREEN, symb="+", size=2)
def	plotWhisker (results, newWcs)

Variables
bool	keptPlots = False

Function Documentation

calcCentroid()

def lsst.ip.diffim.utils.calcCentroid

(

arr

)

Calculate first moment of a (kernel) image.

Definition at line 649 of file utils.py.

calcWidth()

def lsst.ip.diffim.utils.calcWidth	(		arr,
			centx,
			centy
	)

Calculate second moment of a (kernel) image.

Definition at line 664 of file utils.py.

makeRegions()

def lsst.ip.diffim.utils.makeRegions	(		sources,
			outfilename,
			wcs = None
	)

Create regions file for display from input source list.

Definition at line 695 of file utils.py.

plotKernelSpatialModel()

def lsst.ip.diffim.utils.plotKernelSpatialModel	(		kernel,
			kernelCellSet,
			showBadCandidates = True,
			numSample = 128,
			keepPlots = True,
			maxCoeff = 10
	)

Plot the Kernel spatial model.

Definition at line 274 of file utils.py.

plotPixelResiduals()

def lsst.ip.diffim.utils.plotPixelResiduals	(		exposure,
			warpedTemplateExposure,
			diffExposure,
			kernelCellSet,
			kernel,
			background,
			testSources,
			config,
			origVariance = False,
			nptsFull = 1e6,
			keepPlots = True,
			titleFs = 14
	)

Plot diffim residuals for LOCAL and SPATIAL models.

Definition at line 507 of file utils.py.

plotWhisker()

def lsst.ip.diffim.utils.plotWhisker	(		results,
			newWcs
	)

Plot whisker diagram of astromeric offsets between results.matches.

Definition at line 724 of file utils.py.

printSkyDiffs()

def lsst.ip.diffim.utils.printSkyDiffs	(		sources,
			wcs
	)

Print differences in sky coordinates.

The difference is that between the source Position and its Centroid mapped
through Wcs.

Definition at line 680 of file utils.py.

showDiaSources()

def lsst.ip.diffim.utils.showDiaSources	(		sources,
			exposure,
			isFlagged,
			isDipole,
			frame = None
	)

Display Dia Sources.

Definition at line 105 of file utils.py.

showKernelBasis()

def lsst.ip.diffim.utils.showKernelBasis	(		kernel,
			frame = None
	)

Display a Kernel's basis images.

Definition at line 257 of file utils.py.

showKernelCandidates()

def lsst.ip.diffim.utils.showKernelCandidates	(		kernelCellSet,
			kernel,
			background,
			frame = None,
			showBadCandidates = True,
			resids = False,
			kernels = False
	)

Display the Kernel candidates.

If kernel is provided include spatial model and residuals;
If chi is True, generate a plot of residuals/sqrt(variance), i.e. chi.

Definition at line 142 of file utils.py.

showKernelMosaic()

def lsst.ip.diffim.utils.showKernelMosaic	(		bbox,
			kernel,
			nx = 7,
			ny = None,
			frame = None,
			title = None,
			showCenter = True,
			showEllipticity = True
	)

Show a mosaic of Kernel images.

Definition at line 424 of file utils.py.

showKernelSpatialCells()

def lsst.ip.diffim.utils.showKernelSpatialCells	(		maskedIm,
			kernelCellSet,
			showChi2 = False,
			symb = "o",
			ctype = None,
			ctypeUnused = None,
			ctypeBad = None,
			size = 3,
			frame = None,
			title = "Spatial Cells"
	)

Show the SpatialCells.

If symb is something that display.dot understands (e.g. "o"), the top
nMaxPerCell candidates will be indicated with that symbol, using ctype
and size.

Definition at line 68 of file utils.py.

showSourceSet()

def lsst.ip.diffim.utils.showSourceSet	(		sSet,
			xy0 = (0, 0),
			frame = 0,
			ctype = afwDisplay.GREEN,
			symb = "+",
			size = 2
	)

Draw the (XAstrom, YAstrom) positions of a set of Sources.

Image has the given XY0.

Definition at line 46 of file utils.py.

showSourceSetSky()

def lsst.ip.diffim.utils.showSourceSetSky	(		sSet,
			wcs,
			xy0,
			frame = 0,
			ctype = afwDisplay.GREEN,
			symb = "+",
			size = 2
	)

Draw the (RA, Dec) positions of a set of Sources. Image has the XY0.

Definition at line 712 of file utils.py.

Variable Documentation

keptPlots

bool lsst.ip.diffim.utils.keptPlots = False

Definition at line 43 of file utils.py.