program main
   use gt4_historyauto
   implicit none
   type(GT4_REAL1D)        :: spcoordvars(2)
   type(GT4_NAMED_REALARY) :: ancilcrdvars(2)
   type(GT4_ATTRIBUTE)     :: attrs(1)
   integer,parameter :: nx=7,ny=5
   real :: val(nx,ny),lon(nx,ny),lat(nx,ny)
   real :: dt = 6.0, time
   integer :: i,j,kt

   spcoordvars(1) = init_gt4_real1d( (/(1.0*i,i=0,nx-1)/) )
   spcoordvars(2) = init_gt4_real1d( (/(1.0*i,i=0,ny-1)/) )

   lon = reshape( (/ ((10.0*(i-j),i=0,nx-1), j=0,ny-1) /), (/nx,ny/) )
   lat = reshape( (/ ((10.0*(i+j),i=0,nx-1), j=0,ny-1) /), (/nx,ny/) )

   attrs(1) = init_gt4_attribute('coordinates', cval='lon lat')

   ancilcrdvars(1) = init_gt4_named_realary('lon',2,(/'x','y'/),nx*ny,lon, &
                          & 'longitude', 'degrees_east')
   ancilcrdvars(2) = init_gt4_named_realary('lat',2,(/'x','y'/),nx*ny,lat, &
                          & 'latitude', 'degrees_north')

   !<< HistoryAutoCreate full version & HistoryAutoCopyCreate >>

   call HistoryAutoCreate( name='u', longname='U velocity', units='m.s-1', &
	& file='xhistauto/tmp.nc',  &
	& slfst=(/1,1/), sllst=(/0,0/), slstp=(/2,2/), &
	& time_to_start=0.0, put_interval=60.0, dt=dt, &
	& newfile_interval=-999.0, &
	& attrs=attrs, aryshape=(/nx,ny/), &
        & dims=(/'x','y','t'/), axlongnames=(/'x','y','t'/), &
	& axunits=(/'m','m','s'/), axxtypes=(/'','',''/), &
	& spcoordvars=spcoordvars, ancilcrdvars=ancilcrdvars, &
	& title='*test*', source='hori', institution='KU', &
	& proc='' )
   call HistoryAutoCopyCreate( name='v', longname='V velocity', units='m.s-1' )
   call HistoryAutoCopyCreate( name='w', longname='W velocity', units='m.s-1', &
	                 & file='xhistauto/tmp3.nc' )

   ! << HistoryAutoCommon and HistoryAutoSetGrid to set common data in a run >>

   call HistoryAutoSetRunInfo(title='*test*', source='hori', institution='KU',&
	& proc='')

   call HistoryAutoSetGrid(grid_label='surface', aryshape=(/nx,ny/), &
        & dims=(/'x','y','t'/), axlongnames=(/'x','y','t'/), &
	& axunits=(/'m','m','s'/), axxtypes=(/'','',''/), &
	& coord1=spcoordvars(1)%ary, coord2=spcoordvars(2)%ary, &
	& ancilcrdvars=ancilcrdvars )

   ! << HistoryAutoCreate2 using both the SetRunInfo and SetGrid setting >>

   call HistoryAutoCreate( name='u', longname='U velocity', units='m.s-1', &
	& file='xhistauto/tmp1.nc',  &
	& slfst=(/1,1/), sllst=(/0,0/), slstp=(/2,2/), &
	& time_to_start=0.0, put_interval=60.0, dt=dt, &
	& newfile_interval=-999.0, &
	& attrs=attrs, &
	& grid_label='surface' )

   ! << HistoryAutoCreate1 using only the SetRunInfo setting >>

   call HistoryAutoCreate( name='u', longname='U velocity', units='m.s-1', &
	& file='xhistauto/tmp2.nc', &
	& slfst=(/2,2/), sllst=(/0,0/), slstp=(/3,3/), &
	& time_to_start=0.0, put_interval=36.0, dt=dt, &
	& newfile_interval=120.0, &
	& aryshape=(/nx,ny/), &
        & dims=(/'x','y','t'/), axlongnames=(/'x','y','t'/), &
	& axunits=(/'m','m','s'/), axxtypes=(/'','',''/), &
	& spcoordvars=spcoordvars  )
   call HistoryAutoCopyCreate( name='w', longname='W velocity', units='m.s-1' )

   do kt=0,50
      val = reshape( (/ ((i+j-2.0,i=1,nx), j=1,ny) /), (/nx,ny/) ) * max(kt,1)
      time = dt*kt
      if (HistoryAutoWhetherPutNow('u',time)) print *, time
      call HistoryAutoPut('u',val,    time)
      call HistoryAutoPut('v',val-3,  time)
      call HistoryAutoPut('w',val/10, time)
   enddo

end