How to find the first value coordinate(the minimum non-zero x coordinate) in each row?

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)));

Answer 1

[Ameer Hamza]

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

[HUANG YU-CHE]

Thank you for your help,this is exactly what i need

[Ameer Hamza]

I am glad to be of help.

[Willis]

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!

Answer 2

[darova]

Try this

a = zeros(size(A,1),1);
for i = 1:length(a)
    a(i) = find(A(i,:),1,'first')
end

[HUANG YU-CHE]

Thank you for your help,it also works well too,thanks