gammapy.maps.containment_region(map_, fraction=0.393, apply_union=True)[source]#
Find the iso-contours region corresponding to a given containment

for a map of integral quantities with a flat geometry.


Map of integral quantities.

fractionfloat, optional

Containment fraction. Default is 0.393.

apply_unionbool, optional

It True return a compound region otherwise return a list of polygon regions. Default is True. Note that compound regions cannot be written in ds9 format but can always be saved with numpy.savez.

regionslist of PolygonSkyRegion or CompoundSkyRegion

Regions from iso-contours matching containment fraction.