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Hdf rm anchor
AnchorNamesummary

Excerpt

Retrieves a data transform expression

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Hdf rm anchor
AnchorNameprocedure

Procedure:
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H5P_GET_DATA_TRANSFORM ( plist_id, expression, size )

Hdf rm anchor
AnchorNamesignature

Signature:
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<pre><code class="language-c">ssize_t H5Pget_data_transform
                     (hid_t plist_id,
                     char *expression,
                     size_t size)
  </code></pre>
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<pre><code class="language-fortran">NONE</code></pre>

Hdf rm anchor
AnchorNameparameters

Parameters:
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hid_t plist_idIN: Identifier of the property list or class
char *expression  OUT: Pointer to memory where the transform expression will be copied
size_t sizeIN: Number of bytes of the transform expression to copy to

Hdf rm anchor
AnchorNamedescription

Description:
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H5P_GET_DATA_TRANSFORM retrieves the data transform expression previously set in the dataset transfer property list plist_id by H5P_SET_DATA_TRANSFORM.

H5P_GET_DATA_TRANSFORM can be used to both retrieve the transform expression and to query its size.

If expression is non-NULL, up to size bytes of the data transform expression are written to the buffer. If expression is NULL, size is ignored and the function does not write anything to the buffer. The function always returns the size of the data transform expression.

If 0 is returned for the size of the expression, no data transform expression exists for the property list.

If an error occurs, the buffer pointed to by expression is unchanged and the function returns a negative value.

Hdf rm anchor
AnchorNamereturns

Returns:
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Success: size of the transform expression

Failure: a negative value

Hdf rm anchor
AnchorNameexample

Example:
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AnchorNamehistory

History:
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Release    Change
1.8.0Function introduced in this release.