What does this parameter mean?

1 次查看（过去 30 天）
med-sweng
med-sweng 2014-4-18
回答： Image Analyst 2014-4-18
I came about this parameter passed to a function in `MATLAB`:
[X Y ones(n,1)]
Assume X: x-dimension; Y: y-dimension; n: size
What does the above mean?
Thanks.

请先登录，再回答此问题。

回答（2 个）

Walter Roberson
Walter Roberson 2014-4-18
It is equivalent to
horzcat(X, Y, ones(n,1))
ones(n,1) is a column vector of 1's that has n entries in it. If size(X,1) or size(Y,1) is not the same as n, then you would receive an error about incompatible dimensions.
Image Analyst
Image Analyst 2014-4-18
Your "Assume...." sentence is difficult and ambiguous, so I'll just describe it.
In order for that to work, you must have X be a n rows by "whatever" column matrix. Y must also be a n-rows by "whatever"-column matrix. Though the columns for X and Y may be different. ones() makes a n row by 1 column "column vector". The brackets stitch them all together from left to right.

类别

在 Help Center 和 File Exchange 中查找有关 NaNs 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by