size of an array in each dimension
positive integer dimension
The size(M) function returns an array with the number of rows as the first entry, and the number of columns as the second entry.
When M is a row-vector, the result of size(M) will have a 1 in the entry specifying the number of rows. Similarly when M is a column-vector, there will be a 1 in the second entry of the result.
When M has more than 2 dimensions, the number of entries in M will correspond to the number of dimensions of M.
When n is given, size(M,n) will return only the number corresponding to that dimension. size(M,1) will give the number of rows and size(M,2) will give the number of columns.
When n is larger than the number of dimensions of M, 1 will be returned.
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