How to find the first value coordinate(the minimum non-zero x coordinate) in each row?
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How to find the first value coordinate(the minimum non-zero x coordinate) in each row?
and what if each row value coordinate gap were to big how to smooth it ,connect each row to a smooth line? thanks
fclose all; close all; clear all; clf; clc;
A=[0,1,1;0,1,0;1,0,0];
[row,column]=find(A==min(min(1)));
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Ameer Hamza
le 19 Mai 2020
Modifié(e) : Ameer Hamza
le 19 Mai 2020
If matrix just contains 0 and 1
[~,idx] = max(A, [], 2)
Result
>> idx
idx =
2
2
1
For a general case
[~,idx] = max(A~=0, [], 2)
To smooth a signal use smoothdata(): https://www.mathworks.com/help/releases/R2020a/matlab/ref/smoothdata.html
3 commentaires
Willis
le 28 Août 2022
Hello?
What if the matrix (size of 207 x 7) contain not just 0 or 1 but other values?
I need to find the minimum values (not the indices) of each row except zero.
Could you help me for this?
Thank you!
Plus de réponses (1)
darova
le 19 Mai 2020
Try this
a = zeros(size(A,1),1);
for i = 1:length(a)
a(i) = find(A(i,:),1,'first')
end
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