Greetings geometry monks. Here's my problem - I have a set of points on a grid and I want to draw a line around them. I believe this is basically what Math::ConvexHull was born for, but please correct me if I'm wrong. My problem is that instead of drawing a line around the points I'm getting a line that darts in and out of the volume, producing a very non-convex shape. It's all, um, spiky.

More detail - the points are longitude and latitude, although the scale is small enough that I should be able to pretend the grid is flat. However, that means that they're signed floats and the delta between them is relatively small.

I can post my data if need be, but it's pretty voluminous and hard to interpret without a graphing system, which I don't have to post at the moment. Perhaps someone can help me without a working example?

Thanks,
-sam

PS: I'm not stuck on using Math::ConvexHull for this. If you know of a more suitable tool I'd be happy to hear it. It doesn't need to be particularly fast.

In reply to Getting non-convex hulls from Math::ConvexHull by samtregar

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