Cell Array referencing question
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Hello,
Suppose I have
A = {1 2}
A =
[1] [2]
and
B = {[1 2]}
B =
[1x2 double]
I am wondering, why are these different. Matlab Says A is a 1x1 cell, and B is a 1x2 cell. I am confused about what matlab is doing when it sees this and why it is being classified as such.
1 个评论
the cyclist
2014-7-5
采纳的回答
the cyclist
2014-7-4
Your first statement is syntactically equivalent to
A = {[1],[2]};
This is specifying that A is a 1x2 cell array, where the first element is the length-1 vector [1], and the second element is [2].
In your second statement,
B = {[1 2]}
you have specified that B is a 1x1 cell array, where the contents of that one cell is the 1x2 vector [1 2].
Does that help?
2 个评论
Rick
2014-7-4
the cyclist
2014-7-5
编辑：the cyclist
2014-7-5
In your first example, B is the direct specification of a 1x2 cell array.
In your second example, {3} is a 1x1 cell array, {4} is a 1x1 cell array, and then C is the concatenation of those "horizontally", creating a 1x2 cell array.
Hence, the equivalence.
更多回答（1 个）
Actually B contains a 1x2 double and it contains only 1 element (a 1x2 vector) whereas A contains 2 elements, i.e. 2 1x1 vectors if you wish
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