lsst.synpipe.showFootprints Namespace Reference

Functions
def	getMosaic (sources, exposure, idname)
def	main (root, visit, ccd, fakes=None, blends=False, listobj=16, filt=None)

Variables
	parser
	args

Detailed Description

function to show a list of src footprints in a mosaic

Function Documentation

getMosaic()

def lsst.synpipe.showFootprints.getMosaic	(		sources,
			exposure,
			idname
	)

make a mosaic for the given source list from the given exposure

stolen from psfMosaic.py on the sphinx documentation

Definition at line 17 of file showFootprints.py.

def getMosaic(sources, exposure, idname):
    """
    make a mosaic for the given source list from the given exposure

    stolen from psfMosaic.py on the sphinx documentation
    """
    img = exposure.getMaskedImage().getImage()
    subImages = []
    labels = []
    for src in sources:
        footBBox = src.getFootprint().getBBox()
        subimg = lsst.afw.image.ImageF(img, footBBox,
                                       lsst.afw.image.PARENT, True)
        footMask = lsst.afw.image.ImageU(footBBox)
        src.getFootprint().insertIntoImage(footMask, 1, footBBox)
        subimg *= footMask.convertF()
        subImages.append(subimg)
        labels.append('ID=%s' % str(src.get(idname)))

    m = afwDisplay.utils.Mosaic()
    m.setGutter(2)
    m.setBackground(0)
    m.setMode("square")

    # create the mosaic
    for img in subImages:
        m.append(img)
    mosaic = m.makeMosaic()

    # display it with labels
    disp = afwDisplay.Display()
    disp.mtv(mosaic, title="mosaic")
    m.drawLabels(labels)

main()

def lsst.synpipe.showFootprints.main	(		root,
			visit,
			ccd,
			fakes = None,
			blends = False,
			listobj = 16,
			filt = None
	)

Definition at line 52 of file showFootprints.py.

def main(root, visit, ccd, fakes=None, blends=False, listobj=16, filt=None):

    butler = lsst.daf.persistence.Butler(root)
    dataId = {'visit': visit,
              'ccd': int(ccd)} if filt is None else {'tract': visit,
                                                     'patch': ccd,
                                                     'filter': filt}

    if fakes is not None:
        src = matchFakes.getFakeSources(butler, dataId,
                                        extraCols=('zeropoint'),
                                        radecMatch=fakes)
    else:
        src = butler.get('src' if filt is None else 'deepCoadd-src', dataId)
    if not blends:
        src = [s for s in src if ((s.get('deblend.nchild') == 0) &
                                  (s.get('parent') == 0))]
    else:
        src = [s for s in src if (s.get('deblend.nchild') == 0)]

    exposure = butler.get('calexp' if filt is None else 'deepCoadd', dataId)

    if type(listobj) is int:
        listobj = numpy.random.choice(list(range(len(src))), listobj, False)

    srcList = [src[i] for i in listobj]

    getMosaic(srcList, exposure, 'fakeId' if fakes else 'id')

Variable Documentation

args

lsst.synpipe.showFootprints.args

Definition at line 97 of file showFootprints.py.

parser

lsst.synpipe.showFootprints.parser

Definition at line 83 of file showFootprints.py.