Number of Dimensions
Number of matrix or array dimensions.
ndims(x)
x |
a vector, matrix, array, or list |
Returns the number of dimensions as length(x).
For an empty object its dimension is 0, for vectors it is 1 (deviating from MATLAB), for matrices it is 2, and for arrays it is the number of dimensions, as usual. Lists are considered to be (one-dimensional) vectors.
the number of dimensions in a vector, matrix, or array x.
The result will differ from Matlab when x is a vector.
ndims(c()) # 0 ndims(as.numeric(1:8)) # 1 ndims(list(a=1, b=2, c=3)) # 1 ndims(matrix(1:12, 3, 4)) # 2 ndims(array(1:8, c(2,2,2))) # 3
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