Sorting the vector y wrt the vector x?

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I have two vectors x and y
x = 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.66
y = 0.051998 0.084698 0.117398 0.150098 0.182798 0.215498 0.248198 0.19 0.09 0.235118
I want to make the matrix [x,y] in such a way that x is in ascending, i.e., results should be
x = 0.1 0.2 0.3 0.4 0.5 0.6 0.66 0.7 0.8 0.9
y = 0.051998 0.084698 0.117398 0.150098 0.182798 0.215498 0.235118 0.248198 0.19 0.09
Any suggestions are apreciated and thankyou in advance for your help !!

Accepted Answer

Voss
Voss on 16 Apr 2022
x = [ 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.66 ];
y = [ 0.051998 0.084698 0.117398 0.150098 0.182798 0.215498 0.248198 0.19 0.09 0.235118 ];
[~,idx] = sort(x);
M = [x(idx); y(idx)]
M = 2×10
0.1000 0.2000 0.3000 0.4000 0.5000 0.6000 0.6600 0.7000 0.8000 0.9000 0.0520 0.0847 0.1174 0.1501 0.1828 0.2155 0.2351 0.2482 0.1900 0.0900

More Answers (1)

Image Analyst
Image Analyst on 17 Apr 2022
Slightly different but essentially the same
x = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.66];
y = [0.051998, 0.084698, 0.117398, 0.150098, 0.182798, 0.2154908, 0.248198, 0.19, 0.09, 0.235118];
% Sort (and replace) x and get the order in which it was sorted.
[x, sortOrder] = sort(x, 'ascend')
x = 1×10
0.1000 0.2000 0.3000 0.4000 0.5000 0.6000 0.6600 0.7000 0.8000 0.9000
sortOrder = 1×10
1 2 3 4 5 6 10 7 8 9
% Sort y using the same order as x used, replacing original y with new, sorted y.
y = y(sortOrder)
y = 1×10
0.0520 0.0847 0.1174 0.1501 0.1828 0.2155 0.2351 0.2482 0.1900 0.0900

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