         NAME
              initpopdens - initialize population density data

         SYNOPSIS
              #include "lpj.h"

              Popdens initpopdens(const Config *config);

         DESCRIPTION
              Function initializes population density data and opens
              related files specified in the LPJmL configuration.  The
              argument of initpopdens is:

              config
                   Pointer to LPJmL configuration data. Must be read by
                   readconfig().

         RETURN VALUE
              Upon successful completion pointer to allocated population
              density data is returned and NULL in case of failure.

         AUTHORS
              Werner von Bloh (Werner.von.Bloh@pik-potsdam.de), Sibyll
              Schaphoff (Sibyll.Schaphoff@pik-potsdam.de), Stefanie Rost
              (Jachner) (Stefanie.Rost@pik-potsdam.de), Marlies
              Gumpenberger (Marlies.Gumpenberger@pik-potsdam.de), Tim
              Beringer (Erbrecht) (Tim.Beringer@pik-potsdam.de), Christoph
              Mueller (Christoph.Mueller@pik-potsdam.de) Jens Heinke
              (Jens.Heinke@pik-potsdam.de), Hester Biemans
              (Hester.Biemans@wur.nl), Kirsten Thonicke
              (Kirsten.Thonicke@pik-potsdam.de), Ursula Heyder
              (Ursula.Heyder@pik-potsdam.de),

         SEE ALSO
              freepopdens(3), getpopdens(3), readconfig(3)