Calculating arc length of a curve

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Hari krishnan
Hari krishnan on 19 Nov 2018
Commented: Hari krishnan on 19 Nov 2018
I have the trajectory for an object moving on a plane as shown in the figure. Can any one give me an idea to calculate the arc length of this curve? Sample data along with the trajectory plot is attached.

Accepted Answer

Torsten
Torsten on 19 Nov 2018
Use Pythagoras' theorem:
n = numel(x);
length = 0.0;
for i = 1:n-1
length = length + sqrt( (x(i+1)-x(i))^2 + (y(i+1)-y(i))^2 );
end
  6 Comments
Hari krishnan
Hari krishnan on 19 Nov 2018
@ Torsten, I have seen this before. This is to calculate how curvous the trajectory or line is. But what i want to see is how tortous the trajectory is, which can be calculated as the arc length divided by the eucledian distance between the initial and final set of points.

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