Y = splitapply (func, X, G) splits the data variable X into groups according to the group numbers G (typically produced by findgroups), applies the function handle func to each group, and concatenates the per-group results into the output Y. G must be a vector of positive integers with one element per element of X; if it identifies N groups, every integer between 1 and N must occur at least once. Elements for which G is NaN are omitted.

Y = splitapply (func, X1, …, XN, G) splits each of the data variables X1, …, XN and passes the corresponding group of each as a separate input argument to func.

[Y1, …, YM] = splitapply (…) returns the multiple outputs of func, each concatenated across groups.

To split the variables of a table, call splitapply (func, T, G), which dispatches to the table method.

See also: findgroups, table

Source Code: splitapply