Date: Nov 12, 2013 4:31 PM
Author: Derek Goring
Subject: Re: Finding boundary lines for set of points

On Wednesday, November 13, 2013 10:17:07 AM UTC+13, lorderon  wrote:
> Hi All,
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> I have a large set of points around 5000. When I plot the figure it appears to have 4 different regions. I know what the points are for all the regions. My question is the following:
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> Can I somehow only plot the boundary of the regions and basically fill the region?
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> Thanks in advance,
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> Lorderon


Yes, of course you can.
Use ginput to digitise the boundary of each region, then plot them using patch.
help ginput
help patch