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Paper: Spatial Region Filtering in IRAF/PROS
Volume: 52, Astronomical Data Analysis Software and Systems II
Page: 430
Authors: Mandel, E.; Roll, J.; Schmidt, D.; Vanhilst, M.; Burg, R.
Abstract: We describe a spatial region filtering scheme in IRAF that allows users to specify one or more geometric shapes to be included or excluded when masking spatial data. These shapes can be combined using Boolean algebra to create the complex masks required for X-ray analysis.
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