I tried looking here https://www.mathworks.com/help/matlab/ref/find.html but nothing I tried is working, new to Matlab..
Finding first rightmost non-zero column of a matrix?
6 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Teresita Ramirez Aguilar
am 15 Aug. 2019
Kommentiert: Teresita Ramirez Aguilar
am 16 Aug. 2019
How can I tell MATLAB to find the index of the RIGHTmost non-zero column of said matrix?
I found a similar question and answer for the leftmost column and it worked great! However, I am having trouble finding the rightmost column.
I need the leftmost column.
PLS&THANKYOU!
Akzeptierte Antwort
dpb
am 15 Aug. 2019
Bearbeitet: dpb
am 15 Aug. 2019
Same solution as the other except search from the other end...
find(any(A),1,'last')
I think Azzi's solution there doesn't find the column positionally but will find the column with the largest number of nonzero elements in it. So
[2 1
0 1
0 1]
with his would return 2, not 1 because three rows of second column return T but only one of column 1 will. But both have nonzero elements.
any() does the logical test by column for there being one or more nonzero elements so doesn't matter how many there are as long is one it'll show up. Then the find() locates either first or last depending on which direction you ask for with the optional argument.
5 Kommentare
dpb
am 16 Aug. 2019
I just noticed the "image" tag so that's a possibility...something inconsistent with the assumption matrix meant 2D array :)
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Matrix Indexing 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!