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18 lines
494 B
Matlab
18 lines
494 B
Matlab
function idx = getnewpt(X, Y, delt)
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%
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% idx = getnewpt(X, Y, delt)
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% find point where Y-`linear approx` is maximal
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% return index of max deviation or -1 if it is less than `delt`
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%
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% make approximation
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[x0 y0 k] = linearapprox(X,Y);
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% find new knot
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adiff = abs(Y - (y0 + k*(X-x0)));
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maxadiff = max(adiff);
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if(maxadiff < delt)
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idx = -1;
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else
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idx = find(adiff == max(adiff));
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endif
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endfunction
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