H5A_CREATE2

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width	50.00001%
id	1195548673
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id	1195548672

Include Content

render-without-blocks	true
page	.rm-navbar

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Creates an attribute attached to a specified object

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Procedure:

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H5A_CREATE2 ( loc_id, attr_name, type_id, space_id, acpl_id, aapl_id )

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Signature:

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selector	.hdf-togglebutton.hdf-c

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<pre><code class="language-c">hid_t H5Acreate2( hid_t loc_id, const char *attr_name, hid_t type_id, hid_t space_id, hid_t acpl_id, hid_t aapl_id )</code></pre>

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selector	.hdf-togglebutton.hdf-fortran

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<pre><code class="language-fortran">Fortran90 Interface:  h5acreate_f
    
SUBROUTINE h5acreate_f(loc_id, name, type_id, space_id, attr_id, hdferr, &
                       acpl_id, aapl_id )
  IMPLICIT NONE
  INTEGER(HID_T), INTENT(IN) :: loc_id    ! Object identifier 
  CHARACTER(LEN=*), INTENT(IN) :: name    ! Attribute name
  INTEGER(HID_T), INTENT(IN) :: type_id   ! Attribute datatype identifier    
  INTEGER(HID_T), INTENT(IN) :: space_id  ! Attribute dataspace identifier
  INTEGER(HID_T), INTENT(OUT) :: attr_id  ! Attribute identifier 
  INTEGER, INTENT(OUT) :: hdferr          ! Error code:
                                          ! 0 on success and -1 on failure
  INTEGER(HID_T), OPTIONAL, INTENT(IN) :: acpl_id 
                                          ! Attribute creation property 
                                          ! list identifier
  INTEGER(HID_T), OPTIONAL, INTENT(IN) :: aapl_id 
                                          ! Attribute access property 
                                          ! list identifier
END SUBROUTINE h5acreate_f
    


  </code></pre>

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AnchorName	parameters

Parameters:

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hid_t `loc_id`	IN: Location or object identifier The identifier may be a file, group, dataset, or named datatype. If `loc_id` is a file identifier, the attribute will be attached to that file’s root group.
const char * `attr_name`	IN: Attribute name
hid_t `type_id`	IN: Attribute datatype identifier
hid_t `space_id`	IN: Attribute dataspace identifier
hid_t `acpl_id`	IN: Attribute creation property list identifier (Currently not used; specify `H5P_DEFAULT`)
hid_t `aapl_id`	IN: Attribute access property list identifier (Currently not used; specify `H5P_DEFAULT`)

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AnchorName	description

Description:

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H5A_CREATE2 creates an attribute, attr_name, which is attached to the object specified by the identifier loc_id.

The attribute name, attr_name, must be unique for the object.

The attribute is created with the specified datatype and dataspace, type_id and space_id, which are created with the H5T and H5S interfaces, respectively.

If type_id is either a fixed-length or variable-length string, it is important to set the string length when defining the datatype. String datatypes are derived from H5T_C_S1 (or H5T_FORTRAN_S1 for Fortran), which defaults to 1 character in size. See H5T_SET_SIZE and Creating variable-length string datatypes.

The access property list is currently unused, but will be used in the future. This property list should currently be H5P_DEFAULT.

The attribute identifier returned by this function must be released with H5A_CLOSE or resource leaks will develop.

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Returns:

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Returns an attribute identifier if successful; otherwise returns a negative value.

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Example:

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section

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Bitbucket Server file

repoSlug	hdf5
branchId	refs/heads/1.10/master
projectKey	HDFFV
filepath	examples/h5_crtatt.c
showLineNumbers	true
lineStart	44
progLang	plain
lineEnd	45
applicationLink	5ac7b370-7412-3c8c-ad20-807a68261336

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class	hdf-togglebox hdf-fortran hdf-togglebox-hidden

Bitbucket Server file

repoSlug	hdf5
branchId	refs/heads/1.10/master
projectKey	HDFFV
filepath	fortran/examples/h5_crtatt.f90
showLineNumbers	true
lineStart	76
progLang	plain
lineEnd	76
applicationLink	5ac7b370-7412-3c8c-ad20-807a68261336

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AnchorName	history

History:

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Release	Change
1.8.0	C function introduced in this release.

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