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
          For authors and contributors see AUTHORS file


     COPYRIGHT
          (C) Potsdam Institute for Climate Impact Research (PIK), see
          COPYRIGHT file


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