lsst.afw.image.utils.CalibNoThrow Class Reference

Inheritance diagram for lsst.afw.image.utils.CalibNoThrow:

Public Member Functions
def	__enter__
def	__exit__

Private Attributes
	_throwOnNegative

Detailed Description

A class intended to be used with python's with statement, to return NaNs for negative fluxes
instead of raising exceptions (exceptions may be raised for other purposes).

E.g.
 with CalibNoThrow():
     ax.plot([exposure.getCalib().getMagnitude(a) for a in candAmps], zGood[:,k], 'b+')

Definition at line 116 of file utils.py.

Member Function Documentation

def lsst.afw.image.utils.CalibNoThrow.__enter__

(

self

)

Definition at line 124 of file utils.py.

    def __enter__(self):
        self._throwOnNegative = afwImage.Calib.getThrowOnNegativeFlux()
        afwImage.Calib.setThrowOnNegativeFlux(False)