m_checked.cc

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/* Copyright (C) 2013
   Patrick Eriksson <Patrick.Eriksson@chalmers.se>
   Stefan Buehler   <sbuehler(at)ltu.se>

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the
   Free Software Foundation; either version 2, or (at your option) any
   later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
   USA. */



/*===========================================================================
  ===  File description
  ===========================================================================*/

#include "arts.h"
#include "auto_md.h"
#include "matpackI.h"

extern const Numeric DEG2RAD;


/* Workspace method: Doxygen documentation will be auto-generated */
void abs_xsec_agenda_checkedCalc(Workspace& ws _U_,
                                 Index& abs_xsec_agenda_checked,
                                 // WS Input:
                                 const ArrayOfArrayOfSpeciesTag& abs_species,
                                 const Agenda& abs_xsec_agenda,
                                 const Verbosity&
                                 )
{
    bool needs_lines = false;
    bool needs_continua = false;
    bool needs_cia = false;

    for (Index sp = 0; sp < abs_species.nelem(); sp++)
    {
        for (Index tgs = 0; tgs < abs_species[sp].nelem(); tgs++)
        {
            switch (abs_species[sp][tgs].Type())
            {
                case SpeciesTag::TYPE_PLAIN: needs_lines = true; break;
                case SpeciesTag::TYPE_ZEEMAN: break;
                case SpeciesTag::TYPE_PREDEF: needs_continua = true; break;
                case SpeciesTag::TYPE_CIA: needs_cia = true; break;
                case SpeciesTag::TYPE_FREE_ELECTRONS: break;
                case SpeciesTag::TYPE_PARTICLES: break;
                default:
                    ostringstream os;
                    os << "Unknown species type: " << 
                      abs_species[sp][tgs].Type();
                    throw runtime_error(os.str());
                    break;
            }

        }

    }

    if (needs_lines
        && !abs_xsec_agenda.has_method("abs_xsec_per_speciesAddLines"))
    {
        throw runtime_error(
                 "*abs_species* contains line species but *abs_xsec_agenda*\n"
                            "does not contain *abs_xsec_per_speciesAddLines*.");
    }

    if (needs_continua
        && !abs_xsec_agenda.has_method("abs_xsec_per_speciesAddConts"))
    {
        throw runtime_error(
            "*abs_species* contains continuum species but *abs_xsec_agenda*\n"
                            "does not contain *abs_xsec_per_speciesAddConts*.");
    }

    if (needs_cia
        && !abs_xsec_agenda.has_method("abs_xsec_per_speciesAddCIA"))
    {
        throw runtime_error(
                "*abs_species* contains CIA species but *abs_xsec_agenda*\n"
                            "does not contain *abs_xsec_per_speciesAddCIA*.");
    }

    // If here, all OK
    abs_xsec_agenda_checked = 1;
}





/* Workspace method: Doxygen documentation will be auto-generated */
void atmfields_checkedCalc(
         Index&     atmfields_checked,
   const Index&     atmosphere_dim,
   const Vector&    p_grid,
   const Vector&    lat_grid,
   const Vector&    lon_grid,
   const ArrayOfArrayOfSpeciesTag&   abs_species,
   const Tensor3&   t_field,
   const Tensor4&   vmr_field,
   const Tensor3&   wind_u_field,
   const Tensor3&   wind_v_field,
   const Tensor3&   wind_w_field,
   const Tensor3&   mag_u_field,
   const Tensor3&   mag_v_field,
   const Tensor3&   mag_w_field,
   const Index&     abs_f_interp_order,
   const Index&     negative_vmr_ok,
   const Verbosity&)
{
  // Consistency between dim, grids and atmospheric fields/surfaces
  chk_if_in_range( "atmosphere_dim", atmosphere_dim, 1, 3 );
  chk_atm_grids( atmosphere_dim, p_grid, lat_grid, lon_grid );
  chk_atm_field( "t_field", t_field, atmosphere_dim, 
                                                  p_grid, lat_grid, lon_grid );
  chk_atm_field( "vmr_field", vmr_field, atmosphere_dim, abs_species.nelem(),
                                                  p_grid, lat_grid, lon_grid );

  // More for vmr_field.
  if( !negative_vmr_ok && abs_species.nelem() && min(vmr_field) < 0 )
    throw runtime_error( "All values in *vmr_field* must be >= 0." );

  // More for t_field.
  if( min(t_field) <= 0 )
    throw runtime_error( "All temperatures in *t_field* must be > 0." );

  // Winds
  if( wind_w_field.npages() > 0 )
    { 
      chk_atm_field( "wind_w_field", wind_w_field, atmosphere_dim, 
                                                  p_grid, lat_grid, lon_grid );
    }
  if( atmosphere_dim < 3  && wind_v_field.npages() > 0 )
    { 
      chk_atm_field( "wind_v_field", wind_v_field, atmosphere_dim, 
                                                  p_grid, lat_grid, lon_grid );
    }
  if( atmosphere_dim > 2 )
    {
      if( wind_u_field.npages() > 0 )
        { 
          if( wind_v_field.npages() > 0 )
            {
              bool chk_poles = false;
              chk_atm_field( "wind_u_field", wind_u_field, atmosphere_dim, 
                                        p_grid, lat_grid, lon_grid, chk_poles);
              chk_atm_field( "wind_v_field", wind_v_field, atmosphere_dim, 
                                        p_grid, lat_grid, lon_grid, chk_poles);
              chk_atm_vecfield_lat90( "wind_v_field", wind_v_field,
                                      "wind_u_field", wind_u_field,
                                                     atmosphere_dim, lat_grid);
            }
          else
            {
              chk_atm_field( "wind_u_field", wind_u_field, atmosphere_dim, 
                                                  p_grid, lat_grid, lon_grid );
            }
        }
      else
        {
          if( wind_v_field.npages() > 0 )
            {
              chk_atm_field( "wind_v_field", wind_v_field, atmosphere_dim, 
                                                   p_grid, lat_grid, lon_grid);
            }
        }
    }
    
  // If any of the wind fields exist, abs_f_interp_order must not be zero.
  if (wind_u_field.npages() > 0 ||
      wind_v_field.npages() > 0 ||
      wind_w_field.npages() > 0)
    {
      if (abs_f_interp_order==0)
        {
          ostringstream os;
          os << "You have a wind field set, but abs_f_interp_order zero.\n"
             << "This is not allowed. Though abs_f_interp_order only is\n"
             << "required and has an effect if absorption lookup tables\n"
             << "are used, for safety reasons you also have to set it >0\n"
             << "in case of on-the-fly absorption.";
          throw runtime_error(os.str());
        }
    }

  // Magnetic field
  if( mag_w_field.npages() > 0 )
    { 
      chk_atm_field( "mag_w_field (vertical magfield component)",
                     mag_w_field, atmosphere_dim, p_grid, lat_grid, lon_grid );
    }
  if( mag_u_field.npages() > 0 )
    { 
      if( mag_v_field.npages() > 0 )
        {
          bool chk_poles = false;
          chk_atm_field( "mag_v_field", mag_v_field, atmosphere_dim, 
                                       p_grid, lat_grid, lon_grid, chk_poles );
          chk_atm_field( "mag_u_field", mag_u_field, atmosphere_dim, 
                                       p_grid, lat_grid, lon_grid, chk_poles );
          chk_atm_vecfield_lat90( "mag_v_field", mag_v_field,
                                  "mag_u_field", mag_u_field,
                                                     atmosphere_dim, lat_grid);
        }
      else
        {
          chk_atm_field( "mag_u_field", mag_u_field, atmosphere_dim, 
                                                  p_grid, lat_grid, lon_grid );
        }
    }
  else
    {
      if( mag_v_field.npages() > 0 )
        {
          chk_atm_field( "mag_v_field", mag_v_field, atmosphere_dim, 
                                                   p_grid, lat_grid, lon_grid);
        }
    }

  // If here, all OK
  atmfields_checked = 1;
}





/* Workspace method: Doxygen documentation will be auto-generated */
void atmgeom_checkedCalc(
         Index&     atmgeom_checked,
   const Index&     atmosphere_dim,
   const Vector&    p_grid,
   const Vector&    lat_grid,
   const Vector&    lon_grid,
   const Tensor3&   z_field,
   const Vector&    refellipsoid,
   const Matrix&    z_surface,
   const Verbosity&)
{
  // A repetition from atmfields_checked, but we do this to make the two parts
  // independent (the other option would be to demand atmfields_checkec == 1)
  chk_if_in_range( "atmosphere_dim", atmosphere_dim, 1, 3 );
  chk_atm_grids( atmosphere_dim, p_grid, lat_grid, lon_grid );

  // *refellipsoid*
  if( refellipsoid.nelem() != 2 )
    throw runtime_error( "The WSV *refellispoid* must be a vector of "
                         "length 2*." );
  if( refellipsoid[0] <= 0 )
    throw runtime_error( "The first element of *refellipsoid* must "
                         "be > 0." );
  if( refellipsoid[1] < 0  ||  refellipsoid[1] > 1 )
    throw runtime_error( "The second element of *refellipsoid* must be "
                         "inside [0,1]." );
  if( atmosphere_dim == 1  &&  refellipsoid[1] != 0 )
    throw runtime_error( "For 1D, the second element of *refellipsoid* "
                         "(the eccentricity) must be 0." );
   
  chk_atm_field( "z_field", z_field, atmosphere_dim, 
                                                  p_grid, lat_grid, lon_grid );
  chk_atm_surface( "z_surface", z_surface, atmosphere_dim,
                                                          lat_grid, lon_grid );

  // Check that z_field has strictly increasing pages.
  for( Index row=0; row<z_field.nrows(); row++ )
    {
      for( Index col=0; col<z_field.ncols(); col++ )
        {
          ostringstream os;
          os << "z_field (for latitude nr " << row << " and longitude nr "
             << col << ")";
          chk_if_increasing( os.str(), z_field(joker,row,col) ); 
        }
    }

  // Check that there is no gap between the surface and lowest pressure 
  // level
  // (A copy of this code piece is found in z_fieldFromHSE. Make this to an 
  // internal function if used in more places.)
  for( Index row=0; row<z_surface.nrows(); row++ )
    {
      for( Index col=0; col<z_surface.ncols(); col++ )
        {
          if( z_surface(row,col)<z_field(0,row,col) ||
                  z_surface(row,col)>=z_field(z_field.npages()-1,row,col) )
            {
              ostringstream os;
              os << "The surface altitude (*z_surface*) cannot be outside\n"
                 << "of the altitudes in *z_field*.\n"
                 << "z_surface: " << z_surface(row,col) << "\n"
                 << "min of z_field: " << z_field(0,row,col) << "\n"
                 << "max of z_field: " 
                 << z_field(z_field.npages()-1,row,col) << "\n";
              if( atmosphere_dim > 1 )
                os << "\nThis was found to be the case for:\n"
                   << "latitude " << lat_grid[row];
              if( atmosphere_dim > 2 )
                os << "\nlongitude " << lon_grid[col];
              throw runtime_error( os.str() );
            }
        }
    }

  // If here, all OK
  atmgeom_checked = 1;
}




/* Workspace method: Doxygen documentation will be auto-generated */
void cloudbox_checkedCalc(      
         Index&          cloudbox_checked,
   const Index&          atmfields_checked,
   const Index&          atmosphere_dim,
   const Vector&         p_grid,
   const Vector&         lat_grid,
   const Vector&         lon_grid,
   const Tensor3&        z_field,
   const Matrix&         z_surface,
   const Tensor3&        wind_u_field,
   const Tensor3&        wind_v_field,
   const Tensor3&        wind_w_field,
   const Index&          cloudbox_on,    
   const ArrayOfIndex&   cloudbox_limits,
   const Tensor4&        pnd_field,
   const ArrayOfSingleScatteringData& scat_data_array,
   const Matrix&         particle_masses,
   const ArrayOfArrayOfSpeciesTag& abs_species,
   const Verbosity&)
{
  // Demanded space between cloudbox and lat and lon edges [degrees]
  const Numeric llmin = 20;

  if( atmfields_checked != 1 )
    throw runtime_error( "The atmospheric fields must be flagged to have "
                         "passed a consistency check (atmfields_checked=1)." );

  chk_if_bool( "cloudbox_on", cloudbox_on );

  if( cloudbox_on )
    {
      // Winds, must be empty variables (i.e. no winds allowed)
      {
        ostringstream ow;
        ow << "The scattering methods are not (yet?) handling winds. For this\n"
           << "reason, the WSVs for wind fields must all be empty with an\n."
           << "active cloudbox.";
        if( wind_w_field.npages() > 0 )
          { throw runtime_error( ow.str() ); }
        if( wind_v_field.npages() > 0 )
          { throw runtime_error( ow.str() ); }
        if( atmosphere_dim > 2  &&  wind_u_field.npages() > 0 )
          { throw runtime_error( ow.str() ); }
      }

      // no "particles" in abs_species if cloudbox is on (they act on the same
      // scat_data_array! and there is no good reason to have some particles as
      // abs-only, if we anyway do a scattering calculation.).
      Index has_absparticles=0;
      for( Index sp = 0; sp < abs_species.nelem() && has_absparticles < 1; sp++ )
        {
          if ( abs_species[sp][0].Type() == SpeciesTag::TYPE_PARTICLES )
            {
              has_absparticles=1;
            }
        }
      if ( has_absparticles )
        {
          throw runtime_error( "For scattering calculations (cloudbox is on),"
                               "abs_species is not allowed to contain\n"
                               "'particles' (absorbing-only particles)!" );
        }

      // Cloudbox limits
      if( cloudbox_limits.nelem() != atmosphere_dim*2 )
        {
          ostringstream os;
          os << "The array *cloudbox_limits* has incorrect length.\n"
             << "For atmospheric dim. = " << atmosphere_dim 
             << " the length shall be " << atmosphere_dim*2
             << " but it is " << cloudbox_limits.nelem() << ".";
          throw runtime_error( os.str() );
        }
      if( cloudbox_limits[1]<=cloudbox_limits[0] || cloudbox_limits[0]<0 ||
                                           cloudbox_limits[1]>=p_grid.nelem() )
        {
          ostringstream os;
          os << "Incorrect value(s) for cloud box pressure limit(s) found."
             << "\nValues are either out of range or upper limit is not "
             << "greater than lower limit.\nWith present length of "
             << "*p_grid*, OK values are 0 - " << p_grid.nelem()-1
             << ".\nThe pressure index limits are set to " 
             << cloudbox_limits[0] << " - " << cloudbox_limits[1] << ".";
          throw runtime_error( os.str() );
        }
       
      Index nlat=1, nlon=1;

      if( atmosphere_dim >= 2 )
        {
          nlat = lat_grid.nelem();
          if( cloudbox_limits[3]<=cloudbox_limits[2] || 
              cloudbox_limits[2]<1 || cloudbox_limits[3]>=nlat-1 )
            {
              ostringstream os;
              os << "Incorrect value(s) for cloud box latitude limit(s) found."
                 << "\nValues are either out of range or upper limit is not "
                 << "greater than lower limit.\nWith present length of "
                 << "*lat_grid*, OK values are 1 - " << nlat-2
                 << ".\nThe latitude index limits are set to " 
                 << cloudbox_limits[2] << " - " << cloudbox_limits[3] << ".";
              throw runtime_error( os.str() );
            }
          if( ( lat_grid[cloudbox_limits[2]] - lat_grid[0] < llmin )  &&
              ( atmosphere_dim==2  || (atmosphere_dim==3 && lat_grid[0]>-90)) )
            {
              ostringstream os;
              os << "Too small distance between cloudbox and lower end of "
                 << "latitude grid.\n"
                 << "This distance must be " << llmin << " degrees.\n"
                 << "Cloudbox ends at " << lat_grid[cloudbox_limits[2]]
                 << " and latitude grid starts at " << lat_grid[0] << ".";
              throw runtime_error( os.str() );
            }
          if( ( lat_grid[nlat-1] - lat_grid[cloudbox_limits[3]] < llmin )  &&
              ( atmosphere_dim==2  || 
                (atmosphere_dim==3 && lat_grid[nlat-1]<90) ) )
            {
              ostringstream os;
              os << "Too small distance between cloudbox and upper end of "
                 << "latitude grid.\n"
                 << "This distance must be " << llmin << " degrees.\n"
                 << "Cloudbox ends at " << lat_grid[cloudbox_limits[3]]
                 << " and latitude grid ends at " << lat_grid[nlat-1] << ".";
              throw runtime_error( os.str() );
            }
        }
       
      if( atmosphere_dim >= 3 )
        {
          nlon = lon_grid.nelem();
          if( cloudbox_limits[5]<=cloudbox_limits[4] || cloudbox_limits[4]<1 ||
                                                   cloudbox_limits[5]>=nlon-1 )
            {
              ostringstream os;
              os << "Incorrect value(s) for cloud box longitude limit(s) found"
                 << ".\nValues are either out of range or upper limit is not "
                 << "greater than lower limit.\nWith present length of "
                 << "*lon_grid*, OK values are 1 - " << nlon-2
                 << ".\nThe longitude limits are set to " 
                 << cloudbox_limits[4] << " - " << cloudbox_limits[5] << ".";
              throw runtime_error( os.str() );
            }
          if( lon_grid[nlon-1] - lon_grid[0] < 360 )
            {
              const Numeric latmax = max( abs(lat_grid[cloudbox_limits[2]]),
                                          abs(lat_grid[cloudbox_limits[3]]) );
              const Numeric lfac = 1 / cos( DEG2RAD*latmax );
              if( lon_grid[cloudbox_limits[4]]-lon_grid[0] < llmin/lfac )
                {
                  ostringstream os;
                  os << "Too small distance between cloudbox and lower end of"
                     << "the longitude\ngrid. This distance must here be " 
                     << llmin/lfac << " degrees.";
                  throw runtime_error( os.str() );
                }
              if( lon_grid[nlon-1]-lon_grid[cloudbox_limits[5]] < llmin/lfac )
                {
                  ostringstream os;
                  os << "Too small distance between cloudbox and upper end of"
                     << "the longitude\ngrid. This distance must here be " 
                     << llmin/lfac << " degrees.";
                  throw runtime_error( os.str() );
                }
            }
        }

      // Check with respect to z_surface
      for( Index o=0; o<nlon; o++ )
        {
          for( Index a=0; a<nlat; a++ )
            {
              if( z_field(cloudbox_limits[1],a,o) <= z_surface(a,o) )
                throw runtime_error( 
                  "The upper vertical limit of the cloudbox must be above "
                  "the surface altitude (for all latitudes and longitudes)." );
            }
        }

      // pnd_field
      //
      const Index np = scat_data_array.nelem();
      // Dummy variables to mimic grids of correct size
      Vector g1( cloudbox_limits[1]-cloudbox_limits[0]+1 ), g2(0), g3(0);
      if( atmosphere_dim >= 2 ) 
        { g2.resize( cloudbox_limits[3]-cloudbox_limits[2]+1 ); }
      if( atmosphere_dim == 3 ) 
        { g3.resize( cloudbox_limits[5]-cloudbox_limits[4]+1 ); }
      //
      chk_atm_field( "pnd_field", pnd_field, atmosphere_dim, np, g1, g2, g3 );
      //
      if( min(pnd_field) < 0 )
        throw runtime_error( "Negative values in *pnd_field* not allowed." );
      //
      for( Index a=0; a<g2.nelem(); a++ ) { 
        for( Index o=0; o<g3.nelem(); o++ ) { 
          if( max(pnd_field(joker,0,a,o)) > 0  && 
              z_field(cloudbox_limits[0],a,o) > z_surface(a,o) )
            throw runtime_error( "A non-zero value found in *pnd_field* at the"
                         " lower altitude limit of the cloudbox (but the "
                         "position is not at or below the surface altitude)." );
          } }
      if( max(pnd_field(joker,g1.nelem()-1,joker,joker)) > 0 )
        throw runtime_error( "A non-zero value found in *pnd_field* at "
                             "upper altitude limit of the cloudbox." );
      if( atmosphere_dim >= 2 )
        {
          if( max(pnd_field(joker,joker,0,joker)) > 0 )
            throw runtime_error( "A non-zero value found in *pnd_field* at "
                                 "lower latitude limit of the cloudbox." );
          if( max(pnd_field(joker,joker,g2.nelem()-1,joker)) > 0 ) 
            throw runtime_error( "A non-zero value found in *pnd_field* at "
                                 "upper latitude limit of the cloudbox." );
        }
      if( atmosphere_dim == 3 )
        {
          if( max(pnd_field(joker,joker,joker,0)) > 0 )
            throw runtime_error( "A non-zero value found in *pnd_field* at "
                                 "lower longitude limit of the cloudbox." );
          if( max(pnd_field(joker,joker,joker,g3.nelem()-1)) > 0 ) 
            throw runtime_error( "A non-zero value found in *pnd_field* at "
                                 "upper longitude limit of the cloudbox." );
        }

      // particle_masses
      //
      if( particle_masses.nrows() > 0 )
        {
          if( particle_masses.nrows() != np )
            throw runtime_error( "The WSV *particle_masses* must either be "
                                 "empty or have a row size matching the "
                                 "length of *scat_data_array*." );
          if( min(particle_masses) < 0 )
            throw runtime_error( 
                           "All values in *particles_masses* must be >= 0." );
        }
    }

  // If here, all OK
  cloudbox_checked = 1;
}





/* Workspace method: Doxygen documentation will be auto-generated */
void propmat_clearsky_agenda_checkedCalc(
      Workspace& ws _U_,
      Index& propmat_clearsky_agenda_checked,
      // WS Input:
      const ArrayOfArrayOfSpeciesTag& abs_species,
      const Agenda& propmat_clearsky_agenda,
      const Verbosity& )
{
    bool needs_lines = false;
    bool needs_zeeman = false;
    bool needs_continua = false;
    bool needs_cia = false;
    //bool needs_free_electrons = false;
    bool needs_particles = false;

    for (Index sp = 0; sp < abs_species.nelem(); sp++)
    {
        for (Index tgs = 0; tgs < abs_species[sp].nelem(); tgs++)
        {
            switch (abs_species[sp][tgs].Type())
            {
                case SpeciesTag::TYPE_PLAIN: needs_lines = true; break;
                case SpeciesTag::TYPE_ZEEMAN: needs_zeeman = true; break;
                case SpeciesTag::TYPE_PREDEF: needs_continua = true; break;
                case SpeciesTag::TYPE_CIA: needs_cia = true; break;
                case SpeciesTag::TYPE_FREE_ELECTRONS: break;
                case SpeciesTag::TYPE_PARTICLES: needs_particles = true; break;
                default:
                    ostringstream os;
                    os << "Unknown species type: " << 
                      abs_species[sp][tgs].Type();
                    throw runtime_error(os.str());
                    break;
            }
        }
    }

    if ((needs_lines || needs_continua || needs_cia)
        && !(propmat_clearsky_agenda.has_method("propmat_clearskyAddOnTheFly")
             || propmat_clearsky_agenda.has_method("propmat_clearskyAddFromLookup")))
    {
        throw runtime_error("*abs_species* contains line species, CIA species, or continua but "
                            "*propmat_clearsky_agenda*\n"
                            "does not contain *propmat_clearskyAddOnTheFly* nor "
                            "*propmat_clearskyAddFromLookup*.");
    }

    if (needs_zeeman
        && !propmat_clearsky_agenda.has_method("propmat_clearskyAddZeeman"))
    {
        throw runtime_error("*abs_species* contains Zeeman species but *propmat_clearsky_agenda*\n"
                            "does not contain *propmat_clearskyAddZeeman*.");
    }
/*
    if (needs_free_electrons
        && !propmat_clearsky_agenda.has_method("propmat_clearskyAddFaraday"))
    {
        throw runtime_error("*abs_species* contains free electrons but *propmat_clearsky_agenda*\n"
                            "does not contain *propmat_clearskyAddFaraday*.");
    }
*/
    if (needs_particles
        && !propmat_clearsky_agenda.has_method("propmat_clearskyAddParticles"))
    {
        throw runtime_error("*abs_species* contains particles but *propmat_clearsky_agenda*\n"
                            "does not contain *propmat_clearskyAddParticles*.");
    }

    propmat_clearsky_agenda_checked = 1;
}





/* Workspace method: Doxygen documentation will be auto-generated */
void sensor_checkedCalc(
   Index&                            sensor_checked,
   const Index&                      atmosphere_dim,
   const Index&                      stokes_dim,
   const Vector&                     f_grid,
   const Matrix&                     sensor_pos,
   const Matrix&                     sensor_los,
   const Matrix&                     transmitter_pos,
   const Vector&                     mblock_za_grid,
   const Vector&                     mblock_aa_grid,
   const Index&                      antenna_dim,
   const Sparse&                     sensor_response,
   const Vector&                     sensor_response_f,
   const ArrayOfIndex&               sensor_response_pol,
   const Vector&                     sensor_response_za,
   const Vector&                     sensor_response_aa,
   const Verbosity& )
{

  // Some sizes
  const Index   nf      = f_grid.nelem();
  const Index   nza     = mblock_za_grid.nelem();
        Index   naa     = mblock_aa_grid.nelem();   
  if( antenna_dim == 1 )  
    { naa = 1; }
  const Index   n1y     = sensor_response.nrows();
  const Index   nmblock = sensor_pos.nrows();
  const Index   niyb    = nf * nza * naa * stokes_dim;


  // Sensor position and LOS.
  //
  if( sensor_pos.ncols() != atmosphere_dim )
    throw runtime_error( "The number of columns of sensor_pos must be "
                         "equal to the atmospheric dimensionality." );
  if( atmosphere_dim <= 2  &&  sensor_los.ncols() != 1 )
    throw runtime_error( "For 1D and 2D, sensor_los shall have one column." );
  if( atmosphere_dim == 3  &&  sensor_los.ncols() != 2 )
    throw runtime_error( "For 3D, sensor_los shall have two columns." );
  if( sensor_los.nrows() != nmblock )
    {
      ostringstream os;
      os << "The number of rows of sensor_pos and sensor_los must be "
         << "identical, but sensor_pos has " << nmblock << " rows,\n"
         << "while sensor_los has " << sensor_los.nrows() << " rows.";
      throw runtime_error( os.str() );
    }
  if( max( sensor_los(joker,0) ) > 180 )
    throw runtime_error( 
     "First column of *sensor_los* is not allowed to have values above 180." );
  if( atmosphere_dim == 2 )
    {
      if( min( sensor_los(joker,0) ) < -180 )
          throw runtime_error( "For atmosphere_dim = 2, first column of "
                    "*sensor_los* is not allowed to have values below -180." );
    }     
  else
    {
      if( min( sensor_los(joker,0)  ) < 0 )
          throw runtime_error( "For atmosphere_dim != 2, first column of "
                       "*sensor_los* is not allowed to have values below 0." );
    }    
  if( atmosphere_dim == 3  &&  max( sensor_los(joker,1) ) > 180 )
    throw runtime_error( 
    "Second column of *sensor_los* is not allowed to have values above 180." );

  // Transmission position.
  if( transmitter_pos.ncols() > 0  &&  transmitter_pos.nrows() > 0 )
    {
      if( transmitter_pos.nrows() != sensor_pos.nrows() )
        throw runtime_error( "*transmitter_pos* must either be empty or have "
                             "the same number of rows as *sensor_pos*." );
      if( transmitter_pos.ncols() != max(Index(2),atmosphere_dim) )
        throw runtime_error( "*transmitter_pos* must either be empty, have "
                             "2 for 1D/2D or 3 columns for 3D." );
    }

  // Antenna
  //
  chk_if_in_range( "antenna_dim", antenna_dim, 1, 2 );
  //
  if( nza == 0 )
    throw runtime_error( "The measurement block zenith angle grid is empty." );
  chk_if_increasing( "mblock_za_grid", mblock_za_grid );
  //
  if( antenna_dim == 1 )
    {
      if( mblock_aa_grid.nelem() != 0 )
        throw runtime_error( 
          "For antenna_dim = 1, the azimuthal angle grid must be empty." );
    }
  else
    {
      if( atmosphere_dim < 3 )
        throw runtime_error( "2D antennas (antenna_dim=2) can only be "
                                                 "used with 3D atmospheres." );
      if( mblock_aa_grid.nelem() == 0 )
        throw runtime_error(
                      "The measurement block azimuthal angle grid is empty." );
      chk_if_increasing( "mblock_aa_grid", mblock_aa_grid );
    }

  // Sensor
  //
  if( sensor_response.ncols() != niyb ) 
    {
      ostringstream os;
      os << "The *sensor_response* matrix does not have the right size,\n"
         << "either the method *sensor_responseInit* has not been run or some\n"
         << "of the other sensor response methods has not been correctly\n"
         << "configured.";
      throw runtime_error( os.str() );
    }

  // Sensor aux variables
  //
  if( antenna_dim==1 && sensor_response_aa.nelem() )
    throw runtime_error( "If *antenna_dim* is 1, *sensor_response_aa* must "
                         "be empty." );

  if( n1y != sensor_response_f.nelem()  || n1y != sensor_response_pol.nelem() ||
      n1y != sensor_response_za.nelem() || 
      ( antenna_dim==2 && n1y != sensor_response_aa.nelem() ) )
    {
      ostringstream os;
      os << "Sensor auxiliary variables do not have the correct size.\n"
         << "The following variables should all have same size:\n"
         << "length of y for one block    : " << n1y << "\n"
         << "sensor_response_f.nelem()    : " << sensor_response_f.nelem()
         << "\nsensor_response_pol.nelem(): " << sensor_response_pol.nelem()
         << "\nsensor_response_za.nelem() : " << sensor_response_za.nelem() 
         << "\n";
      if( antenna_dim == 2 )
        { os << "sensor_response_aa.nelem() : " << sensor_response_aa.nelem() 
             << "\n"; }
      throw runtime_error( os.str() );
    }

  // If here, all OK
  sensor_checked = 1;
}