gtvardeldim.f90

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subroutine gtvardeldim(var, dimord, err)
  use gtdata_types, only: gt_variable
  use gtdata_internal_map, only: map_lookup, gt_dimmap, map_set_ndims, map_set
  use dc_trace, only: beginsub, endsub, dbgmessage
  implicit none
  type(gt_variable), intent(in):: var
  integer, intent(in):: dimord
  logical, intent(out):: err
  type(gt_dimmap), allocatable:: map(:)
  type(gt_dimmap):: tmpmap
  integer:: ndimsp, stat
  character(*), parameter:: subname = 'GTVarDelDim'
continue
  err = .true.
  call beginsub(subname)
  if (dimord < 1) then
    call endsub(subname, "negative dimord=%d invalid", i=(/dimord/))
    return
  endif
  call map_lookup(var, ndims=ndimsp)
  if (ndimsp <= 0) then
    call endsub(subname, "variable invalid")
    return
  else if (dimord > ndimsp) then
    call endsub(subname, "dimord=%d not exist", i=(/dimord/))
    return
  endif
 
  allocate(map(ndimsp))
  call map_lookup(var, map=map)
  tmpmap = map(dimord)
  map(dimord: ndimsp-1) = map(dimord+1: ndimsp)
  map(ndimsp) = tmpmap
  call map_set(var, map, stat)
  deallocate(map)
 
  call map_set_ndims(var, ndims = ndimsp - 1, stat=stat)
  err = stat /= 0
  call endsub(subname)
end subroutine gtvardeldim