saving values in a for loop

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?

Answer 1

[Walter Roberson]

 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

[soloby]

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]

   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.