Why does length sometimes read the number of columns instead of the number of rows?
12 次查看(过去 30 天)
显示 更早的评论
Hello, I`m looping over the length of a table (converted to array to be 'double'). However, sometimes the length reads the rows and when run again sometimes it reads columns! Why is this happening? Thanks
0 个评论
采纳的回答
Chad Greene
2017-8-10
编辑:Chad Greene
2017-8-10
length just tells you the longest dimension. If you're talking about a table (the piece of furniture), its length is always its longest dimension. To get just the number of rows or columns, do
rows = size(X,1);
or
cols = size(X,2);
更多回答(2 个)
Jan
2017-8-10
Whenever you have a question concerning a command, start at the documentation:
doc length
There you find these 2 initial lines:
length
Length of largest array dimension
Sounds clear :-)
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Logical 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!