Generalized row and col
Given an array, returns an array of the same size whose elements are sequentially numbered along the i-th dimension.
arow(a, i)
a |
array to be converted |
i |
Number of the dimension |
An integer matrix with the same dimensions as a, with element
(n1,n2, ..., n_d)
being n_i.
This function is equivalent to, but faster than,
function(a,i){do.index(a,function(x){x[i]})}. However, it is
much more complicated.
The function is nominally the same as slice.index() but I have
not checked all the edge cases.
Robin K. S. Hankin
a <- array(0,c(3,3,2,2)) arow(a,2) (arow(a,1)+arow(a,2)+arow(a,3)+arow(a,4))%%2
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