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problem computing area [message #68137]

Sun, 04 October 2009 22:01

aetherlux
Messages: 12
Registered: July 2006

Junior Member

Hi everybody,

I am trying to compute the area of this figure with
IDLanROI:ComputeGeometry

http://juan.gulo.org/area2.png

but I obtain a negative area. I have checked it and there is not lines
crossing over others. For the "horizontal" part of the figure the line
begins and finishes in negative values of "y" (that is, the first and
last point), but is it a problem?

Ideas? I have been looking at it all the weekend but I don't have any
clue about the possible problem.

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