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How to find a point along a line a certain distance away from another point

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agatte
agatte 2017-2-2
评论： shalvi singh 2021-3-12
Hi,
I have a line between two points : P1 = (x1,y1) and P2= (x2,y2). I have linear function equation : y = ax + b I want to extend a line a distance about 10 from P1 and P2 (in each direction left and right -) I need to find new points P3 and P4 on this line. I don"t have any idea how to move point a distance on the line ?
I would be appreciate for any help please.
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Adam
Adam 2017-2-2
Sounds like a question you should work out on paper before you do it in Matlab if you aren't familiar with the maths itself.

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KSSV
KSSV 2017-2-2

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