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
il 19 Mag 2020
Modificato: Ameer Hamza
il 19 Mag 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 Commenti
Willis
il 28 Ago 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!
Più risposte (1)
darova
il 19 Mag 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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