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Re: Polygon filling oddities [message #27068 is a reply to message #26943]

Thu, 04 October 2001 16:04

Mark Hadfield
Messages: 783
Registered: May 1995

Senior Member

From: "Craig Markwardt" <craigmnet@cow.physics.wisc.edu>
> I can see your gripe, and the polygons should probably be clipped
> rather than simply discarded completely. The hard part will be to
> convince RSI that this is so :-)

Especially since the POLYFILLV documentation forbids negative vertex
coordinates...

"...The X and Y parameters are vectors that contain the subscripts of the
vertices that define the polygon in the coordinate system of the
two-dimensional Sx by Sy array. The Sx and Sy parameters define the number
of columns and rows in the array enclosing the polygon. At least three
points must be specified, and all points should lie within the limits: 0 <=
Xi < Sx and 0 <= Yi < Sy for all i."

I *did* read the documentation but I missed that bit!

On the other hand I don't see any such restriction in IDLanROI.

---
Mark Hadfield
m.hadfield@niwa.cri.nz http://katipo.niwa.cri.nz/~hadfield
National Institute for Water and Atmospheric Research

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[Message index]

		Re: Polygon filling oddities By: David Fanning on Thu, 04 October 2001 05:01
		Re: Polygon filling oddities By: Craig Markwardt on Wed, 03 October 2001 18:18
		Re: Polygon filling oddities By: Mark Hadfield on Thu, 04 October 2001 16:04
		Re: Polygon filling oddities By: Mark Hadfield on Thu, 04 October 2001 14:40

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