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Page Title

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Hdf rm anchor
AnchorNamesummary

Excerpt

Creates a new group and links it into the file

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Hdf rm anchor
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Procedure:
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H5G_CREATE2(loc_id, name, lcpl_id, gcpl_id, gapl_id)

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AnchorNamesignature

Signature:
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<pre><code class="language-c">hid_t H5Gcreate2( hid_t loc_id, const char *name, hid_t lcpl_id, hid_t gcpl_id, hid_t gapl_id )</code></pre>
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<pre><code class="language-fortran">SUBROUTINE h5gcreate_f(loc_id, name, grp_id, hdferr, &
                        size_hint, lcpl_id, gcpl_id, gapl_id)
  IMPLICIT NONE
  INTEGER(HID_T), INTENT(IN) :: loc_id   ! File or group identifier 
  CHARACTER(LEN=*), INTENT(IN) :: name   ! Name of the group 
  INTEGER(HID_T), INTENT(OUT) :: grp_id  ! Group identifier 
  INTEGER, INTENT(OUT) :: hdferr         ! Error code  
                                         ! 0 on success and -1 on failure
  INTEGER(SIZE_T), OPTIONAL, INTENT(IN) :: size_hint 
                                         ! Parameter indicating the number of 
                                         ! bytes to reserve for the names that 
                                         ! will appear in the group. 
                                         ! Note, set to OBJECT_NAMELEN_DEFAULT_F
                                         ! if using any of the optional 
                                         ! parameters lcpl_id, gcpl_id, 
                                         ! and/or gapl_id when not
                                         ! using keywords in specifying the 
                                         ! optional parameters.
  INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lcpl_id  
                                         ! Property list for link creation
  INTEGER(HID_T), OPTIONAL, INTENT(IN) :: gcpl_id  
                                         ! Property list for group creation
  INTEGER(HID_T), OPTIONAL, INTENT(IN) :: gapl_id  
                                         ! Property list for group access
END SUBROUTINE h5gcreate_f</code></pre>

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AnchorNameparameters

Parameters:
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hid_t loc_idIN: Location identifier; may be a file, group, dataset, named datatype or attribute
const char *name    IN: Absolute or relative name of the link to the new group
hid_t lcpl_idIN: Link creation property list identifier
hid_t gcpl_idIN: Group creation property list identifier
hid_t gapl_idIN: Group access property list identifier 
(No group access properties have been implemented at this time; use H5P_DEFAULT.)

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Description:
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H5G_CREATE2 creates a new group in a file. After a group has been created, links to datasets and to other groups can be added.

The loc_id and name parameters specify where the group is located. loc_id may be a file, group, dataset, named datatype or attribute in the file. If an attribute, dataset, or named datatype is specified for loc_id then the group will be created at the group location where the attribute, dataset, or named datatype is attached. name is the link to the group; name may be either an absolute path in the file (the links from the root group to the new group) or a relative path from loc_id (the link(s) from the group specified by loc_id to the new group). See the “Accessing objects by location and name” topic for more information.

lcpl_idgcpl_id, and gapl_id are property list identifiers. These property lists govern how the link to the group is created, how the group is created, and how the group can be accessed in the future, respectively. H5P_DEFAULT can be passed in if the default properties are appropriate for these property lists. Currently, there are no APIs for the group access property list; use H5P_DEFAULT. See “H5P: Property List Interface” for the functions that can be used with each property list.

To conserve and release resources, the group should be closed when access is no longer required.

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Returns:
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Returns a group identifier if successful; otherwise returns a negative value. 

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Example:
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branchIdrefs/heads/1.10/master
projectKeyHDFFV
filepathexamples/h5_subset.c
showLineNumberstrue
lineStart32
progLangcpp
lineEnd42
applicationLink5ac7b370-7412-3c8c-ad20-807a68261336

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repoSlughdf5
branchIdrefs/heads/1.10/master
projectKeyHDFFV
filepathfortran/examples/compound.f90
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progLangplain
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History:
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Release    C
1.8.0Function introduced in this release.