Apply one of a selected range of functions to summarize an outcome variable over one or more indexing factors and write the resultant summary to the clientside
tapplyDS(X.name, INDEX.names.transmit, FUN.name)
the name of the variable to be summarized. Specified
via argument <X.name> of
the name of a single factor or a vector of names of factors to
index the variable to be summarized. Specified via argument <INDEX.names>
the name of one of the allowable summarizing functions to be applied.
Specified via argument <FUN.name> of
see details for
an array of the summarized values created by the tapplyDS function. This array is returned to the clientside. It has the same number of dimensions as INDEX.
Paul Burton, Demetris Avraam for DataSHIELD Development Team