How can I calculate directional vector of a line connecting two points?

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K M Ibrahim Khalilullah
回答： goerk 2016-5-19
The two points are pixel position of an image

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goerk
goerk 2016-5-19
Startpoint = [1 2];
Endpoint = [3 3];
direction = Endpoint - Startpoint;
direction_scaled = direction/norm(direction); % vector with length 1

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