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?
9 ビュー (過去 30 日間)
古いコメントを表示
Teresita Ramirez Aguilar
2019 年 8 月 15 日
コメント済み: Teresita Ramirez Aguilar
2019 年 8 月 16 日
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!
採用された回答
dpb
2019 年 8 月 15 日
編集済み: dpb
2019 年 8 月 15 日
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 件のコメント
dpb
2019 年 8 月 16 日
I just noticed the "image" tag so that's a possibility...something inconsistent with the assumption matrix meant 2D array :)
その他の回答 (0 件)
参考
カテゴリ
Help Center および File Exchange で Matrix Indexing についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!