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imageprofilesupport.makeordinate - Function

	Package	general
	Module	images
	Tool	imageprofilesupport

Make an ordinate

Synopsis
makeordinate(im, region, ci, ls, which)

Arguments

im	in	The image
		Allowed:	Image tool
region	in	The region of interest
		Allowed:	Region tool or naked record
ci	in	PGPlot color index of this ordinate when plotted
		Allowed:	Integer
		Default:	1
ls	in	PGPlot line style of this ordinate when plotted
		Allowed:	Integer
		Default:	1
which	in	Which ordinate index to set
		Allowed:	Integer or unset
		Default:	Next slot

Returns
Integer or fail

Description
This function creates an ordinate. You specify an Image tool and a Region tool. The image data in the region are averaged over all axes except the profile axis. The region may also be specified as a naked record with fields 'blc' and 'trc' holding vectors of absolute pixel coordinates.

This function returns an index identifying the ordinate number that you are displaying. You can display many profiles simultaneously this way. To reset the number of profiles to zero use function setnoprofile.

You must call function setprofileaxis before calling this function so that it knows which axis is the profile axis.

Example

- im := image('ngc1313.cube')             
- csys := im.coordsys()                   
- shp := im.shape()                       
- p := imageprofilesupport(csys=csys, shp=shp, widgetset=dws)
- p.setprofileaxis(axis);
- p.makemenus()
-
- pos := csys.referencepixel()            
- p.makeabcissa(pos)                      
-
- blc := pos; blc[3] := 1                 
- trc := pos; trc[3] := shp[3]
- r := drm.box(blc, trc)
- idx := p.makeordinate (im, r)                  
-
- p.plot(which=idx)