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How to generate curves with constant distance to reference curve

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Nicolas
Nicolas 2011-10-31
Hi
I have a trajectory with around 5500 points in a 5500x2 matrix (x,y coordinates of each point).
This reference trajectory will be used to generate a potential field later on.
Now I want to generate some curves around my trajectory with constant distances of fixed values.
I have heard there is a Matlab function that fulfills my need (by creating circles and taking intersection points of two circles). However I was not able to find this functions name, nor do I know in what categories to look for it.
Thanks for helping me to find this functions name!

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Nicolas
Nicolas 2011-12-15
Basically what I was looking for was File ID: #27873
http://www.mathworks.ch/matlabcentral/fileexchange/27873-parallel-curves

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