Convert nodal attribute of netlet into an array
longit_nodal_to_arr.RdMainly for use in going from a list netlet to an array netlet for bridging netlet objects to analysis with packages that expect matrix/array inputs
Value
a list object of length two, one for the row actors and another for the column actors. Each element in the list is an array of dimensions n x pn x t, where n is the number of actors, pn is the number of nodal variables, and t is the number of time periods. The rownames of the array are the actors, and the colnames are the nodal variables.