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saving values in a for loop

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soloby
soloby 2015-6-25
评论： Walter Roberson 2015-6-25
My code looks something like this
x = -10:0.1:10;
f1 = trapmf(x,[-2 0 0 2]);
for k = 0.05:0.05:1
index = find(abs(f1-k)<10^(-10))
Xidx = x(index)
end
I want to save my Xidx to plot x(index) for all k values, but it currently saves only the last iteration
Any solution?

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Walter Roberson
Walter Roberson 2015-6-25
x = -10:0.1:10;
f1 = trapmf(x,[-2 0 0 2]);
kvals = 0.05:0.05:1;
for kidx = 1 : length(kvals)
k = kvals(kidx);
index = find(abs(f1-k)<10^(-10))
Xidx(kidx) = x(index)
end
  2 个评论
soloby
soloby 2015-6-25
In an assignment A(I) = B, the number of elements in B and I must be the same.
Error in fdsasfd (line 9) Xidx(kidx) = x(index)
Walter Roberson
Walter Roberson 2015-6-25
x = -10:0.1:10;
f1 = trapmf(x,[-2 0 0 2]);
kvals = 0.05:0.05:1;
for kidx = 1 : length(kvals)
k = kvals(kidx);
index = find(abs(f1-k)<10^(-10))
Xidx{kidx} = x(index)
end
but be cautioned that your cell arrays might come up empty and might come up as different sizes.

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