H5T_CREATE

Content Layer

id	1195548671

Content Column

width	50.00001%
id	1195578110
class	rm_pagetree_col mobile-hide

Content Block

id	1195578111

Content Column

width	50.00001%
id	1195548673
class	hdf-rm-main-column

Content Block

id	1195548672

Include Content

render-without-blocks	true
page	.rm-navbar

HTML Wrap

class	hdf-print-only

Page Title

HTML Wrap

class	hdf-rm-summary-block

Hdf rm anchor

AnchorName	summary

Excerpt
Creates a new datatype.

HTML Wrap

class	hdf-rm-content-block

Hdf rm anchor

AnchorName	procedure

Procedure:

HTML Wrap

class	hdf-rm-section

HTML Wrap

class	hdf_procedure

H5T_CREATE(class, size)

Hdf rm anchor

AnchorName	signature

Signature:

HTML Wrap

class	hdf-rm-section

HTML Wrap

class	hdf-togglebox hdf-c

HTML Add Class

	hdf-togglebutton-visible
	hdf-togglebutton-visible
selector	.hdf-togglebutton.hdf-c

HTML
<pre><code class="language-c">hid_t H5Tcreate( H5T_class_t class, size_tsize )</code></pre>

HTML Wrap

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

HTML Add Class

	hdf-togglebutton-visible
	hdf-togglebutton-visible
selector	.hdf-togglebutton.hdf-fortran

HTML

<pre><code class="language-fortran">SUBROUTINE h5tcreate_f(class, size, type_id, hdferr) 
  IMPLICIT NONE
  INTEGER, INTENT(IN) :: class             ! Datatype class can be one of
                                           !    H5T_COMPOUND_F
                                           !    H5T_OPAQUE_F
                                           !    H5T_ENUM_F
                                           !    H5T_STRING_F
  INTEGER(SIZE_T), INTENT(IN) :: size      ! Size of the datatype
  INTEGER(HID_T), INTENT(OUT) :: type_id   ! Datatype identifier
  INTEGER, INTENT(OUT) :: hdferr           ! Error code
                                           ! 0 on success and -1 on failure
END SUBROUTINE h5tcreate_f</code></pre>

Hdf rm anchor

AnchorName	parameters

Parameters:

HTML Wrap

class	hdf-rm-section

H5T_class_t `class`	IN: Class of datatype to create; valid values include: `H5T_COMPOUND` `H5T_OPAQUE` `H5T_ENUM` `H5T_STRING`
size_t `size`	IN: Size, in bytes, of the datatype being created

Hdf rm anchor

AnchorName	description

Description:

HTML Wrap

class	hdf-rm-section

H5Tcreate H5T_CREATE creates a new datatype of the specified class with the specified number of bytes. This function is used only with the following datatype classes:

H5T_COMPOUND
H5T_OPAQUE
H5T_ENUM
H5T_STRING

Other datatypes, including integer and floating-point datatypes, are typically created by using H5Tcopy to copy and modify a predefined datatype.

When creating a variable-length string datatype, size must be H5T_VARIABLE; see “ Creating variable-length string datatypes.”

When creating a fixed-length string datatype, size will be the length of the string in bytes. The length of the string in characters will depend on the encoding used; see H5PsetH5P_char_encodingSET_CHAR_ENCODING .

ENUMs created with this function have a signed native integer base datatype. Use H5Tenum_createH5T_ENUM_CREATE if a different integer base datatype is required.

The datatype identifier returned from this function should be released with H5T_CLOSE H5Tclose or resource leaks will result.

Hdf rm anchor

AnchorName	returns

Returns:

HTML Wrap

class	hdf-rm-section

Returns datatype identifier if successful; otherwise returns a negative value.

Hdf rm anchor

AnchorName	example

Example:

HTML Wrap

class	hdf-rm-section

Coming Soon!

Comment

HTML Wrap

class	hdf-togglebox hdf-c

Bitbucket Server file

repoSlug	hdf5
branchId	refs/heads/1.10/master
projectKey	HDFFV
filepath	examples/h5_subset.c
showLineNumbers	true
lineStart	32
progLang	cpp
lineEnd	42
applicationLink	5ac7b370-7412-3c8c-ad20-807a68261336

HTML Wrap

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

Bitbucket Server file

repoSlug	hdf5
branchId	refs/heads/1.10/master
projectKey	HDFFV
filepath	fortran/examples/compound.f90
showLineNumbers	true
lineStart	25
progLang	plain
lineEnd	35
applicationLink	5ac7b370-7412-3c8c-ad20-807a68261336

Hdf rm anchor

AnchorName	history

History:

HTML Wrap

class	hdf-rm-section

Release	Change
1.8.8	String datatype capability added to function in this release.

Page tree

Versions Compared

Old Version 3

New Version Current

Key

Procedure:

Signature:

Parameters:

Description:

Returns:

Example:

History:

The HDF Group

Site

Resources

Connect