How to find the first value coordinate(the minimum non-zero x coordinate) in each row?
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
HUANG YU-CHE
am 19 Mai 2020
Kommentiert: Willis
am 28 Aug. 2022
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)));
0 Kommentare
Akzeptierte Antwort
Ameer Hamza
am 19 Mai 2020
Bearbeitet: Ameer Hamza
am 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 Kommentare
Willis
am 28 Aug. 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!
Weitere Antworten (1)
darova
am 19 Mai 2020
Try this
a = zeros(size(A,1),1);
for i = 1:length(a)
a(i) = find(A(i,:),1,'first')
end
Siehe auch
Kategorien
Mehr zu Scatter Plots finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!