Why the dimension is crossed

Question

Joseph Stalin 2015-5-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/216904-why-the-dimension-is-crossed

评论： Image Analyst 2015-5-15

Hi Users, In this below statement xls_read() says it is a 25x2 double (associated with a xls sheet) But when I copy it to the Temp_1 var, it says 1x25 double..

Temp_1(z) = Xls_read(z,1); I dont understand why the dimension is crossed. Could anybody answer this please?

regards, Joseph

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Star Strider 2015-5-15

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/216904-why-the-dimension-is-crossed#answer_179223

You only asked it to copy the first column of ‘Xls_read’ to ‘Temp_1’. It’s just doing what you told it to do.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Image Analyst 2015-5-15

If z was [1:size( Xls_read, 1)] it will copy the entire first column. Otherwise it will take only those rows specified by z in column 1. Either way, the result is a column vector, not a row vector so the dimensions are not "crossed".

请先登录，再进行评论。