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Points in a rectangle with an angle [message #48231] Wed, 05 April 2006 09:32
JJMeyers2 is currently offline  JJMeyers2
Messages: 12
Registered: October 2005
Junior Member
Hello,

I have a problem in IDL that I was wondering if anyone has any idea how
it can be done.
I have a set of coordinates and I am trying to figure out how many of
the coordinates are inside a rectangle. I know the coordinates of the 4
edges of the rectangle but the problem is that the rectangle is at an
angle in the x,y axis ( I know the slope). I can not just say
coords=where((x LE xmax) AND (x GT xmin) AND (y LE ymin) AND (y GT
ymax))
because that will give me coordinates of a rectangle without an angle
(parallel to the y axis).
Is there any function in IDL that might be doing that?

Thank you,
JJM.

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