diff options
| author | Elena Pourmal <epourmal@hdfgroup.org> | 1998-07-08 22:28:21 (GMT) |
|---|---|---|
| committer | Elena Pourmal <epourmal@hdfgroup.org> | 1998-07-08 22:28:21 (GMT) |
| commit | 49f626b81f028a09d5c287156120a5d405008335 (patch) | |
| tree | ee0178875371da97373cb5c08a2fa7a276f94ccd /doc/src/RM_H5S.html | |
| parent | 2f1f2ac4e44efef28ac7b7edaf4f9470b866c9fc (diff) | |
| download | hdf5-49f626b81f028a09d5c287156120a5d405008335.zip hdf5-49f626b81f028a09d5c287156120a5d405008335.tar.gz hdf5-49f626b81f028a09d5c287156120a5d405008335.tar.bz2 | |
[svn-r475] HDF5 Reference Manual files.
Main file is RM_H5Front.html. Created from the Alpha1 Ref. Manual, Alpha1
User's Guide Documents and the Alpha2 Source Code.
Diffstat (limited to 'doc/src/RM_H5S.html')
| -rw-r--r-- | doc/src/RM_H5S.html | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/doc/src/RM_H5S.html b/doc/src/RM_H5S.html new file mode 100644 index 0000000..903d720 --- /dev/null +++ b/doc/src/RM_H5S.html @@ -0,0 +1,291 @@ +<html> +<head><title> +HDF5/H5S Draft API Specification +</title></head> + +<body> + +<center> +<h1>H5S: Dataspace Interface</h1> +</center> + +<h2>Dataspace Object API Functions</h2> + +These functions create and manipulate the dataspace in which to store the +elements of a dataset. + +<table border=0> +<tr><td valign=top> +<ul> + <li><a href="#Dataspace-CreateSimple">H5Screate_simple</a> + <li><a href="#Dataspace-Copy">H5Scopy</a> + <li><a href="#Dataspace-GetNpoints">H5Sget_npoints</a> + <li><a href="#Dataspace-GetNdims">H5Sget_ndims</a> +</ul> +</td><td> </td><td valign=top> +<ul> + <li><a href="#Dataspace-GetDims">H5Sget_dims</a> + <li><a href="#Dataspace-IsSimple">H5Sis_simple</a> + <li><a href="#Dataspace-SetSpace">H5Sset_space</a> + <li><a href="#Dataspace-SetHyperslab">H5Sset_hyperslab</a> +</ul> +</td><td> </td><td valign=top> +<ul> + <li><a href="#Dataspace-GetHyperslab">H5Sget_hyperslab</a> + <li><a href="#Dataspace-Close">H5Sclose</a> +</ul> +</td></tr> +</table> + +<hr> + +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-CreateSimple">H5Screate_simple</a> +<dt><strong>Signature:</strong> + <dd><em>hid_t</em> <code>H5Screate_simple</code>(<em>int</em> <code>rank</code>, + <em>const hsize_t *</em> <code>dims</code>, + <em>const hsize_t *</em> <code>maxdims</code> + ) +<dt><strong>Description:</strong> + <dd>This function creates a new simple data space object and opens it for + access. The <code>rank</code> is the number of dimensions used in the + dataspace. The <code>dims</code> argument is the size of the simple + dataset and the <code>maxdims</code> argument is the upper limit on the + size of the dataset. <code>maxdims</code> may be the null pointer in + which case the upper limit is the same as <code>dims</code>. If an + element of <code>maxdims</code> is zero then the corresponding dimension + is unlimited, otherwise no element of <code>maxdims</code> should be + smaller than the corresponding element of <code>dims</code>. The + dataspace ID returned from this function should be released with + H5Sclose or resource leaks will occur. +<dt><strong>Parameters:</strong> + <dl> + <dt><em>int</em> <code>rank</code> + <dd>Number of dimensions of dataspace. + <dt><em>const hsize_t *</em> <code>dims</code> + <dd>An array of the size of each dimension. + <dt><em>const hsize_t *</em> <code>maxdims</code> + <dd>An array of the maximum size of each dimension. + </dl> +<dt><strong>Returns:</strong> + <dd>A dataspace ID on success, negative on failure. +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-Copy">H5Scopy</a> +<dt><strong>Signature:</strong> + <dd><em>hid_t </em><code>H5Scopy</code>(<em>hid_t </em><code>space_id</code> + ) +<dt><strong>Description:</strong> + <dd>This function copies a dataspace. The dataspace ID returned from this + function should be released with H5Sclose or resource leaks will occur. +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of dataspace to copy. + </dl> +<dt><strong>Returns:</strong> + <dd>A dataspace ID on success, negative on failure. +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-GetNpoints">H5Sget_npoints</a> +<dt><strong>Signature:</strong> + <dd><em>hsize_t</em> <code>H5Sget_npoints</code>(<em>hid_t </em><code>space_id</code>) +<dt><strong>Description:</strong> + <dd>This function determines the number of elements in a dataspace. For + example, a simple 3-dimensional dataspace with dimensions 2, 3 and 4 + would have 24 elements. +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of the dataspace object to query + </dl> +<dt><strong>Returns:</strong> + <dd>Number of elements in the dataspace, 0 on failure +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-GetNdims">H5Sget_ndims</a> +<dt><strong>Signature:</strong> + <dd><em>int</em> <code>H5Sget_ndims</code>(<em>hid_t</em> <code>space_id</code>) +<dt><strong>Description:</strong> + <dd>This function determines the dimensionality (or rank) of a dataspace. +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of the dataspace object to query + </dl> +<dt><strong>Returns:</strong> + <dd>Number of dimensions in the dataspace, negative on failure +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-GetDims">H5Sget_dims</a> +<dt><strong>Signature:</strong> + <dd><em>int</em> <code>H5Sget_dims</code>(<em>hid_t</em> <code>space_id</code>, + <em>hsize_t *</em><code>dims</code>, + <em>hsize_t *</em><code>maxdims</code> + ) +<dt><strong>Description:</strong> + <dd>This function returns the size of each dimension in a dataspace through + the <code>dims</code> parameter. +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of the dataspace object to query + <dt><em>hsize_t *</em><code>dims</code> + <dd>Pointer to array to store the size of each dimension. + <dt><em>hsize_t *</em><code>maxdims</code> + <dd>Pointer to array to store the maximum size of each dimension. + </dl> +<dt><strong>Returns:</strong> + <dd>Number of dimensions in the dataspace, negative on failure +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-IsSimple">H5Sis_simple</a> +<dt><strong>Signature:</strong> + <dd><em>hbool_t </em><code>H5Sis_simple</code>(<em>hid_t </em><code>space_id</code>) +<dt><strong>Description:</strong> + <dd>This function determines whether a dataspace object is a simple + dataspace or not. [Currently, all dataspace objects are simple + dataspaces, complex dataspace support will be added in the future] +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of the dataspace object to query + </dl> +<dt><strong>Returns:</strong> + <dd>TRUE or FALSE on success, negative on failure +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-SetSpace">H5Sset_space</a> +<dt><strong>Signature:</strong> + <dd><em>herr_t </em><code>H5Sset_space</code>(<em>hid_t </em><code>space_id</code>, + <em>uint32 </em><code>rank</code>, + <em>uint32 *</em><code>dims</code> + ) +<dt><strong>Description:</strong> + <dd>This function determines the number of dimensions and the size of each + dimension for the space that a dataset is stored within. This function + only creates simple dataspace objects. Setting the rank to a + value of zero allows scalar objects to be created. Dimensions are + specified from slowest to fastest changing in the <code>dims</code> + array (i.e. 'C' order). Setting the size of a dimension to zero + indicates that the dimension is of unlimited size and should be allowed + to expand. Currently, only the first dimension in the array (the + slowest) may be unlimited in size. + [Currently, all dataspace objects are simple + dataspaces, complex dataspace support will be added in the future] +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of the dataspace object. + <dt><em>uint32</em> <code>rank</code> + <dd>The number of dimensions the object is composed of. + <dt><em>uint32 *</em> <code>dims</code> + <dd>An array of the size of each dimension. (NULL for scalar objects) + </dl> +<dt><strong>Returns:</strong> + <dd>zero/negative +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-SetHyperslab">H5Sset_hyperslab</a> +<dt><strong>Signature:</strong> + <dd><em>herr_t</em> <code>H5Sset_hyperslab</code>(<em>hid_t</em> <code>space_id</code>, + <em>const hssize_t *</em><code>start</code>, + <em>const hsize_t *</em><code>count</code>, + <em>const hsize_t *</em><code>stride</code> + ) +<dt><strong>Description:</strong> + <dd>This function selects a hyperslab from a simple dataspace. The stride + array may be used to sub-sample the hyperslab chosen, a value of 1 in each + position of the stride array selects contiguous elements in the array, + a value of 2 selects every other element, etc. If the stride parameter is + set to NULL, a contiguous hyperslab is chosen. The values in the start and + count arrays may be negative, to allow for selecting hyperslabs in chunked + datasets which extend in arbitrary directions. +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of the dataspace object to set hyperslab in. + <dt><em>const hssize_t *</em><code>start</code> + <dd>Pointer to array of starting location for hyperslab. + <dt><em>const hsize_t *</em><code>count</code> + <dd>Pointer to array of magnitude of hyperslab. + <dt><em>const hsize_t *</em><code>stride</code> + <dd>Pointer to array of stride of hyperslab. + </dl> +<dt><strong>Returns:</strong> + <dd>zero/negative +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-GetHyperslab">H5Sget_hyperslab</a> +<dt><strong>Signature:</strong> + <dd><em>int</em> <code>H5Sget_hyperslab</code>(<em>hid_t</em> <code>space_id</code>, + <em>hssize_t *</em><code>start</code>, + <em>hsize_t *</em><code>count</code>, + <em>hsize_t *</em><code>stride</code> + ) +<dt><strong>Description:</strong> + <dd>This function retrieves information about the hyperslab from a simple + dataspace. If no hyperslab has been defined then the hyperslab is the + same as the entire array. +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of the dataspace object to set hyperslab in. + <dt><em>hssize_t *</em><code>start</code> + <dd>Pointer to array to store starting location of hyperslab. + <dt><em>hsize_t *</em><code>count</code> + <dd>Pointer to array to store magnitude of hyperslab. + <dt><em>hsize_t *</em><code>stride</code> + <dd>Pointer to array to store stride of hyperslab. + </dl> +<dt><strong>Returns:</strong> + <dd>Hyperslab dimensionality on success, negative on failure. +</dl> + +<hr> +<dl> +<dt><strong>Name:</strong> <a name="Dataspace-Close">H5Sclose</a> +<dt><strong>Signature:</strong> + <dd><em>herr_t </em><code>H5Sclose</code>(<em>hid_t </em><code>space_id</code> + ) +<dt><strong>Description:</strong> + <dd>This function releases a dataspace. Further access through the dataspace + ID is illegal. Failure to release a dataspace with this call will + result in resource leaks. +<dt><strong>Parameters:</strong> + <dl> + <dt><em>hid_t</em> <code>space_id</code> + <dd>ID of dataspace to release. + </dl> +<dt><strong>Returns:</strong> + <dd>zero/negative +</dl> + +<hr> + +<address> +<a href="mailto:fbaker@ncsa.uiuc.edu">Frank Baker</a> +<br> +<a href="mailto:h5docs@ncsa.uiuc.edu">HDF5 Documentation</a> + +<br> +Last modified: 29 June 1998 + +</body> +</html> |