How to apply a function to an indexed array without loop
6 views (last 30 days)
Show older comments
Is there a way to do the following
A = rand(100,2);
c = randi(5,[100,1]);
for i = 1:5
B(i, :) = mean(A(c == i, :));
end
without a loop?
A is my input data, c is some sort of classification and mean could be any function. I tried
A(c == 1:5, :)
but this just gives me an error.
0 Comments
Answers (1)
Chris Perkins
on 8 Jan 2018
Hi Laura,
You might be able to re-structure your problem a bit and use "arrayfun", which applies a function to each value in the given array. See the following documentation link for more information:
0 Comments
See Also
Categories
Find more on Matrix Indexing in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!