gdncvarputattrchar.f90 File Reference

Put character attribute to netCDF variable. More...

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Functions/Subroutines
subroutine	gdncvarputattrchar (var, name, val, xtype, err)

Detailed Description

Put character attribute to netCDF variable.

Author

Eizi TOYODA, Yasuhiro MORIKAWA

Copyright

Copyright (C) GFD Dennou Club, 2000-2026. All rights reserved.
License is BSD-2-Clause. See COPYRIGHT in detail

Definition in file gdncvarputattrchar.f90.

Function/Subroutine Documentation

gdncvarputattrchar()

subroutine gdncvarputattrchar	(	type(gd_nc_variable), intent(in)	var,
		character(len = *), intent(in)	name,
		character(len = *), intent(in)	val,
		character(len = *), intent(in), optional	xtype,
		logical, intent(out), optional	err
	)

Set character attribute value

Sets a character attribute on a variable. If xtype is specified, the value is converted to that numeric type before storage. If name starts with '+', it is treated as a global attribute. Empty value deletes the attribute.

Parameters

[in]	var	Variable handle
[in]	name	Attribute name
[in]	val	Character value to set
[in]	xtype	Target type for conversion (optional)
[out]	err	Error flag (optional)

Definition at line 48 of file gdncvarputattrchar.f90.

  use gtdata_netcdf_types, only: gd_nc_variable, gd_nc_variable_entry
  use gtdata_netcdf_internal, only: vtable_lookup
  use gtdata_netcdf_file_generic, only: gdncfiledefinemode
  use netcdf, only: &
    & nf90_global, &
    & nf90_noerr, &
    & nf90_put_att, &
    & nf90_del_att
  use dc_url, only: gt_plus
  use dc_error
  use dc_string, only: get_array
  use gtdata_netcdf_generic, only: put_attr
  implicit none
  type(GD_NC_VARIABLE), intent(in):: var
  character(len = *), intent(in):: name
  character(len = *), intent(in):: val
  character(len = *), intent(in), optional:: xtype
  logical, intent(out), optional:: err
  integer, pointer:: ip(:)
  real, pointer:: rp(:)
  double precision, pointer:: dp(:)
  integer:: stat
  type(GD_NC_VARIABLE_ENTRY):: ent
continue
  stat = vtable_lookup(var, ent)
  if (stat /= nf90_noerr) goto 999
  if (len(val) == 0) then
    if (name(1:1) == gt_plus) then
      stat = nf90_del_att(ent%fileid, nf90_global, name = name(2:))
    else
      stat = nf90_del_att(ent%fileid, ent%varid, name = name)
    endif
    goto 999
  endif
  if ( present(xtype) ) then
    select case(xtype)
    case("INTEGER", "integer", "int")
      goto 200
    case("REAL", "real", "float")
      goto 300
    case("DOUBLEPRECISION", "DOUBLE", "double")
      goto 400
    end select
  end if
 
  stat = gdncfiledefinemode( ent % fileid )
  if (stat /= nf90_noerr) goto 999
  if (name(1:1) == gt_plus) then
    stat = nf90_put_att(ent%fileid, nf90_global, name(2:), trim(val) )
  else
    stat = nf90_put_att(ent%fileid, ent%varid, name, trim(val) )
  endif
 
999 continue
  call storeerror(stat, 'GDNcVarPutAttrChar', err, cause_c=name)
  return
 
200 continue
  call get_array(ip, val)
  if (associated(ip)) then
    call put_attr(var, name, ip, err)
    deallocate(ip)
  endif
  return
 
300 continue
  call get_array(rp, val)
  if (associated(rp)) then
    call put_attr(var, name, rp, err)
    deallocate(rp)
  endif
  return
 
400 continue
  call get_array(dp, val)
  if (associated(dp)) then
    call put_attr(var, name, dp, err)
    deallocate(dp)
  endif
  return

References dc_url::gt_plus, dc_error::storeerror(), and gtdata_netcdf_internal::vtable_lookup().

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