How do I find the maximum/last index value from a list of indices

2 views (last 30 days)
I have imported some data to form an array called '' and then find the row/col indices for each value 1-49 in a vector called 'numbers'
for i=1:length(numbers)
[row,col] = find(' == i);
How do I find the greatest/maximum/last column number?
test(i) = max(col)
does not work within the loop. There are plenty of questions and answers on how to get the indices of the maximum value in the array, but that is not what I am looking for.
Best regards,

Accepted Answer

Image Analyst
Image Analyst on 24 Dec 2016
Try this:
numbers = 1 : 1 : 49;
for k = 1 : length(numbers)
[rows, columns] = find(' == numbers(k));
maxColumns(k) = max(columns)
Image Analyst
Image Analyst on 24 Dec 2016
It's not exactly the same thing you were doing since my code is more robust in that it compares "numbers" instead of i. Your code defines numbers but then never uses it. Anyway there is nothing wrong so the only way we can continue is if you attach your data via a .mat file.

Sign in to comment.

More Answers (1)

Alex on 18 Mar 2017
Solution: I found that I created a variable called min/max: max=max(data) min=min(data) By changing these lines to: dmax=max(data) dmin=min(data) the max(idx), min(idx) function as expected.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by