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1.1.1 Determine a beam to which all beams in an image can be convolved.
Determine a beam to which all beams in an image can be convolved. If the image does not have a beam, an exception will be thrown. If the image has a single beam, that beam will be returned. If the image has multiple beams, this will be the beam with the largest area in the image beam set if all the other beams can be convolved to that beam. If not, this is guaranteed to be the minimum area beam to which all beams in the set can be convolved if all but one of the beams in the set can be convolved to the beam in the set with the largest area. Otherwise, the returned beam may or may not be the smallest possible beam to which all the beams in the set can be convolved.
cb = ia.commonbeam()
# convolve all the planes in the image with that beam
ia.convolve2d(outfile="myconvolvedimage.im", major=cb["major], minor=cb["minor"], pa=cb["pa"], targetres=T)
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