Extracting points representing curve
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I have certain set of (x,y) coordinates representing a shape. How to extract those points which define a curve among the available points?
3 个评论
KSSV
2020-8-20
Already you have the points (x,y) in hand. What you want?
Shweta Saboo
2020-8-20
KSSV
2020-8-20
Okay share the data and what you expect.
回答（1 个）
KSSV
2020-8-20
In case are you looking for polyfit. ? Let (x,y) be the points you have and you want fit a quadratic polynomial.
p = polyfit(x,y,2) ;
xi = x ;
yi = polyval(p,xi) ;
iwant = [xi yi] ; % assuming xi, yi to be column arrays
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2020-8-20
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