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Version 1.9 Build 1488

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regionmanager.quarter - Function

	Package	general
	Module	images
	Tool	regionmanager

Create a quarter pixel region

Synopsis
quarter(comment)

Arguments

comment	in	A comment stored with the region
		Allowed:	String

Returns
Region tool or fail

Description

This function creates a region which selects one quarter of the image by area centered on the image center for the first two dimensions. It selects all pixels for higher dimensions. It might be useful for deconvolution (CLEAN). This region is implemented with the pixel box function.

Example

- r1 := drm.quarter()
- im := image('hcn')
- im.boundingbox(r1)
[blc=[40 46 1] , trc=[116 134 256] , inc=[1 1 1] , bbShape=[77 89 256] , 
regionShape=[77 89 256] , imageShape=[155 178 256] ]

You can see that auto extension to the third axis is occurring.