gdncvarattr.f90 File Reference

netCDF 変数の属性列挙 More...

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Functions/Subroutines
subroutine	gdncvarattrrewind (var)
subroutine	gdncvarattrnext (var, name, vend)

Detailed Description

netCDF 変数の属性列挙

Author

GFD Dennou Club

Copyright

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

変数のすべての属性を列挙するには:

1. attr_rewind(var) を呼び出してイテレータをリセット
2. ループ内で attr_next(var, name, [end]) を呼び出す
3. name が各属性名を返す; 終了時は空文字列
4. オプションで end が真になることでも終了を判定可能

グローバル属性は名前の先頭に '+' が付加されて現れます。

Definition in file gdncvarattr.f90.

Function/Subroutine Documentation

gdncvarattrnext()

subroutine gdncvarattrnext	(	type(gd_nc_variable), intent(in)	var,
		character(len = *), intent(out)	name,
		logical, intent(out), optional	vend )

列挙の次の属性名を取得

次の属性名を返します。変数属性が先に返され、 その後グローバル属性 ('+' 接頭辞付き) が返されます。

Parameters

[in]	var	変数ハンドル
[out]	name	属性名 (終了時は空文字列)
[out]	vend	全属性列挙完了時に真 (省略可能)

Definition at line 77 of file gdncvarattr.f90.

  use gtdata_netcdf_types, only: gd_nc_variable, gd_nc_variable_entry
  use gtdata_netcdf_internal, only: vtable_set_attrid, vtable_lookup
  use netcdf, only: nf90_noerr, nf90_max_name, nf90_inq_attname, nf90_global
  use dc_url, only: gt_plus
  implicit none
  type(GD_NC_VARIABLE), intent(in):: var
  character(len = *), intent(out):: name
  type(GD_NC_VARIABLE_ENTRY):: ent
  logical, intent(out), optional:: vend
  character(len = NF90_MAX_NAME):: attrname
  integer:: stat
  integer:: new_attrid
 
  stat = vtable_lookup(var, ent)
  if (stat /= nf90_noerr) goto 999
 
  new_attrid = ent%attrid
  ! 最初は変数属性の検索
  if (ent%attrid >= 0) then
    new_attrid = ent%attrid + 1
    stat = nf90_inq_attname(ent%fileid, ent%varid, new_attrid, attrname)
    if (stat == nf90_noerr) then
      name = attrname
      stat = vtable_set_attrid(var, new_attrid)
      vend = .false.
      return
    end if
    new_attrid = -1
  endif
 
  ! 次は大域属性の検索
  stat = nf90_inq_attname(ent%fileid, nf90_global, -new_attrid, attrname)
  if (stat == nf90_noerr) then
    new_attrid = new_attrid - 1
    name = gt_plus // attrname
    stat = vtable_set_attrid(var, new_attrid)
    vend = .false.
    return
  endif
 
999 continue
  ! ここでは attrid の再設定はしない。次呼んでもエラーになるのが適当。
  vend = .true.
  name = ""
  return

References dc_url::gt_plus, gtdata_netcdf_internal::vtable_lookup(), and gtdata_netcdf_internal::vtable_set_attrid().

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gdncvarattrrewind()

subroutine gdncvarattrrewind

(

type(gd_nc_variable), intent(in)

var

)

属性イテレータを先頭にリセット

Parameters

[in]

var

変数ハンドル

Definition at line 43 of file gdncvarattr.f90.

  use gtdata_netcdf_types, only: gd_nc_variable
  use gtdata_netcdf_internal, only: vtable_set_attrid
  use dc_trace, only: dbgmessage
  implicit none
  type(GD_NC_VARIABLE), intent(in):: var
  integer:: stat
  character(len = *), parameter:: subname = 'GDNcVarAttrRewind'
 
  stat = vtable_set_attrid(var, 0)
  call dbgmessage("%c %d", c1=subname, i=(/stat/))

References dc_trace::dbgmessage(), and gtdata_netcdf_internal::vtable_set_attrid().

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