= PDAFomi_obs_op_gridpoint =

This page documents the routine `PDAFomi_obs_op_gridpoint` of PDAF-OMI.

The routine provides an observation operator for observations that are grid point values in the state vector. It is usually called in `obs_op_OBSTYPE` in an [wiki:OMI_observation_modules OMI observation module].

|| See the [wiki:OMI_observation_operators page describing PDAF-OMI observation operators] for a general overview.||

The interface is:
{{{
  SUBROUTINE PDAFomi_obs_op_gridpoint(thisobs, state_p, obs_f_all)

    TYPE(obs_f), INTENT(inout) :: thisobs  ! Data type with full observation
    REAL, INTENT(in)    :: state_p(:)      ! Process-local model state provided by PDAF
    REAL, INTENT(inout) :: obs_f_all(:)    ! Full observed state for all observation types (array provided by PDAF)
}}}

'''Note:'''
 * The necessary index information for the observation operator was initialized in `init_obs_OBSTYPE` of the observation module.