angle calculation from three points

[Judd Storrs]

It sounds like you're on the right track (Reading between the lines it seems
like you're doing something like a vector dot product and extracting the
angle using an arccos). Nothing in your question really sounds wrong about
your approach. Post some relevant code that doesn't work.

--judd


On Mon, Jul 13, 2009 at 11:13 AM, noja <dominika.bienkowska at imp.ac.at>wrote:

>
> Hello!
> I have been struggling with this thing for quite a bit, so maybe somebody
> could help me..
> I have x y positions of moving point and I'm trying to get how the angle
> changes. I was trying to use the the formula for acos but I'm not getting
> anywhere. Could anybody help me?
> thanx!!
> --
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> Sent from the Octave - General mailing list archive at Nabble.com.
>
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