Finding common x values along with the corresponding y values.

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Mr. 206
Mr. 206 2019-2-26
回答： Jan 2019-2-26
I have to sets of data, First set comprises of x_exp and y_exp. And second set comprises of x_sim and y_sim. They are as follows,
x_exp=[980;1000;1020;1040;1040];
y_exp=[0.003;0.10;0.020;0.008;0.002];
x_sim=[920;940;960;980;1000;1020;1040;1040];
y_sim=[0.005;0.003;0.0010;0.0025;0.0050;0.008;0.010;0.020];
I want to find the common values between x_exp and x_sim along with the corresponding y_sim values.
The result that I expect is
x_sim=[980;1000;1020;1040;1040];
y_sim=[0.0025;0.0050;0.008;0.010;0.020];

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采纳的回答

Yasasvi Harish Kumar
Hi,
Try something like this,
t = 1;
for i =1:length(x_exp)
for j = 1:length(x_sim)
if x_exp(i) == x_sim(j)
x(t) = x_sim(j);
y(t) = y_sim(j);
t = t+1;
break
end
end
end
x and y are your results.
Regards

更多回答（1 个）

Jan
Jan 2019-2-26
[match, index] = ismember(x_exp, x_sim)
result = y_sim(index(match))
A problem is the repeated value:
x_exp = [1040; 1040]
x_sim = [1040; 1040];
y_sim = [0.010; 0.020];
ismember uses the first occurrence. If you want to use a found value once only, you have to write some special code, which considers this. Then start with Yasasvi Harish Kumar's solution and overwrite a found x_sim value.

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