Curve cover (upper limit and lower limit)

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milad babaei
milad babaei 2011-10-26
Hi,
i plot a curve in maTLAB.i would like to know is there anyway tu make a cover for curve(sat of data plotted in a x-y axis.this is my code :(c values will call from another script...from a truncated random number generator) -------------------------------------------------------------
nsamples=3000;
for i=1:nsamples
CS(i)=C(1,i);
phi(i)=((14.1477*CS(i)*CS(i))-(28.512*CS(i))+16.4557);
end
plot( CS,phi,'+')

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回答（1 个）

Walter Roberson
Walter Roberson 2011-10-26
You could use convhull or its newer equivalents.
If you need to follow the top or bottom edges more closely, you could do something like grid your data and find the highest and lowest occupied points per column.
  2 个评论
milad babaei
milad babaei 2011-10-27
tnx walter...yes exactly i want that(need to follow both edges closely)...would plz help me more on that??
milad babaei
milad babaei 2011-10-27
how should i use convhull with my set of data which generated by a RV generator (c values)???

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