Return the first or last parts of objects inheriting from 'mvdf_obj'
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x |
An object inheriting from 'mvdf_obj' |
n |
an integer vector of length up to nrow(mvdf(x)). Values specify the indices to be selected along the rows of the object. A positive value of n[i] includes the first/last n[i] indices in that dimension, while a negative value excludes the last/first abs(n[i]), including all remaining indices. NA or non-specified values (when length(n) < length(dim(x))) select all indices in that dimension. Must contain at least one non-missing value. |
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Ignored. |
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