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18.12.14 1946
The W - Internet & Computers - Computational Mathematics help... anyone??
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samoflange
Lap cheong








Since: 22.2.04
From: Cambridge, MA

Since last post: 428 days
Last activity: 420 days
#1 Posted on
Not sure if this goes here or in Random, or if anyone on this board could even help me with this, but here goes.

I'm looking for a numerical integration technique, which can be implemented in either Matlab or Maple, which can give me the area of a shape of rather complex geometry, defined by a set of discrete points. I've got ways of doing a rough approximation of this (ie the polyarea function in Matlab) but am considerably lost as to how to do this with a higher degree of precision. I am able to create a cubic spline for the shape, and I believe this may help, but again I don't know the techniques of integration which would lead me to my answer.

As this probably wouldn't lead to much of a group discussion, replies by PM would be appreciated. Unless, of course, there are more mathematicians on this board than I thought.



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Well, that's interesting. Basically, to the letter, I have exactly the same problem. I tried turning off the Direct X stuff (as suggested), and while it may be a bit ropey, everything DOES then play. It's confusing.
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