Convert HL table spec file to doxygen (#5149)

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Allen Byrne
2024-11-26 12:51:38 -06:00
committed by GitHub
parent 89bfb21a17
commit 3ef89d2b53
2 changed files with 95 additions and 194 deletions
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*/
/** \page TBL HDF5 Table Specification Version 1.0
The HDF5 specification defines the standard objects and storage for the standard HDF5
objects. (For information about the HDF5 library, model and specification, see the HDF
documentation.) This document is an additional specification do define a standard profile
for how to store tables in HDF5. Table data in HDF5 is stored as HDF5 datasets with standard
attributes to define the properties of the tables.
\section sec_tab_spec_intro Introduction
A generic table is a sequence of records, each record has a name and a type. Table data
is stored as an HDF5 one dimensional compound dataset. A table is defined as a collection
of records whose values are stored in fixed-length fields. All records have the same structure
and all values in each field have the same data type.
The dataset for a table is distinguished from other datasets by giving it an attribute
"CLASS=TABLE". Optional attributes allow the storage of a title for the Table and for
each column, and a fill value for each column.
\section sec_tab_spec_attr Table Attributes
The attributes for the Table are strings. They are written with the #H5LTset_attribute_string
Lite API function. "Required" attributes must always be used. "Optional" attributes must be
used when required.
<table>
<caption><b>Table 1. Attributes of an Image Dataset</b></caption>
<tr>
<th><b>Attribute Name</b></th>
<th><b>Required</b><br /><b>Optional</b></th>
<th><b>Type</b></th>
<th><b>String Size</b></th>
<th><b>Value</b></th>
<th><b>Description</b></th>
</tr>
<tr>
<td>CLASS</td>
<td>Required</td>
<td>String</td>
<td>5</td>
<td>&quot;TABLE&quot;</td>
<td>This attribute is type #H5T_C_S1, with size 5. For all Tables, the value of this attribute is
<b>TABLE</b>. This attribute identifies this data set as intended to be interpreted as Table that
conforms to the specifications on this page.</td>
</tr>
<tr>
<td>VERSION</td>
<td>Required</td>
<td>String</td>
<td>3</td>
<td>&quot;0.2&quot;</td>
<td>This attribute is of type #H5T_C_S1, with size corresponding to the length of the version string.
This attribute identifies the version number of this specification to which it conforms. The current
version number is "0.2".</td>
</tr>
<tr>
<td>TITLE</td>
<td>Optional</td>
<td>String</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>The <b>TITLE</b> is an optional String that is to be used as the informative title of the whole table.
The <b>TITLE</b> is set with the parameter table_title of the function #H5TBmake_table.</td>
</tr>
<tr>
<td>FIELD_(n)_NAME</td>
<td>Required</td>
<td>String</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>The <b>FIELD_(n)_NAME</b> is an optional String that is to be used as the informative title of column n
of the table. For each of the fields the word <b>FIELD_</b> is concatenated with the zero based field (n)
index together with the name of the field.</td>
</tr>
<tr>
<td>FIELD_(n)_FILL</td>
<td>Optional</td>
<td>String</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>The <b>FIELD_(n)_FILL</b> is an optional String that is the fill value for column n of the table.
For each of the fields the word <b>FIELD_</b> is concatenated with the zero based field (n) index
together with the fill value, if present. This value is written only when a fill value is defined
for the table.</td>
</tr>
</table>
The following section of code shows the calls necessary to the creation of a table.
\code
// Create a new HDF5 file using default properties.
file_id = H5Fcreate("my_table.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
// Call the make table function
H5TBmake_table("Table Title", file_id, "Table1", NFIELDS, NRECORDS, dst_size, field_names, dst_offset, field_type, chunk_size, fill_data, compress, p_data);
// Close the file.
status = H5Fclose(file_id);
\endcode
For more information see the @ref H5TB reference manual page and the @ref H5TB_UG, which includes examples.
\htmlinclude TableSpec.html
*/
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<html>
<head>
<title>HDF5 Table Specification</title>
</head>
The HDF5 specification defines the standard objects and storage for the
standard HDF5 objects. (For information about the HDF5 library, model and
specification, see the HDF documentation.)&nbsp; This document is an additional
specification do define a standard profile for how to store tables in HDF5.
Table data in HDF5 is stored as HDF5 datasets with standard attributes to define
the properties of the tables.
<h2>
1. Overview</h2>
A generic table is a sequence of records, each record has a name and a type.
Table data is stored as an HDF5 one dimensional compound dataset.&nbsp; A table
is defined as a collection of records whose values are stored in fixed-length
fields. All records have the same structure and all values in each field have
the same data type.
<p>The dataset for a table is distinguished from other datasets by giving
it an attribute &quot;CLASS=TABLE&quot;.&nbsp;&nbsp;
Optional attributes allow the storage of a title for the Table and for
each column, and a fill value for each column.
<h2>
2.&nbsp; Table Attributes</h2>
The attributes for the Table are strings.&nbsp;They are written with the <a href="RM_H5LT.html#H5LTset_attribute_string"><code>H5LTset_attribute_string</code></a>
Lite API function.&nbsp; "Required" attributes must always be used. "Optional" attributes
must be used when required.
<br>&nbsp;
<h4>
Attributes</h4>
<dl>
<dt>
Attribute name="<b>CLASS</b>" (Required)</dt>
<dd>
This attribute is type H5T_C_S1, with size 5.</dd>
<dd>
For all Tables, the value of this attribute is &quot;TABLE&quot;.</dd>
<dd>
This attribute identifies this data set as intended to be interpreted as Table that conforms to the specifications on this page.</dd>
</dl>
<dl>
Attribute name="<b>VERSION</b>" (Required)
<dd>
This attribute is of type H5T_C_S1, with size corresponding to the length
of the version string.&nbsp; This attribute identifies the version number
of this specification to which it conforms.&nbsp; The current version number
is &quot;0.2&quot;.</dd>
</dl>
<dl>
<dt>
Attribute name="<b>TITLE</b>" (Optional)</dt>
<dd>
The <b>TITLE</b> is an optional String that is to be used as the
informative title of the whole table.
The <b>TITLE</b> is set with the parameter <code> table_title</code> of the function
<a href="RM_H5TB.html#H5TBmake_table"> <code> H5TBmake_table</code></a>.&nbsp;</dd>
</dl>
<dl>
<dt>
Attribute name="<b>FIELD_(n)_NAME</b>" (Required)</dt>
<dd>
The <b>FIELD_(n)_NAME</b> is an optional String that is to be used as the
informative title of column <b>n</b> of the table.
For each of the fields the word FIELD_ is concatenated with
the zero based field (n) index together with the name of the field.</dd>
</dl>
<dl>
<dt>
Attribute name="<b>FIELD_(n)_FILL</b>" (Optional)</dt>
<dd>
The <b>FIELD_(n)_FILL</b> is an optional String that is the fill value for
column <b>n</b> of the table.
For each of the fields the word FIELD_ is concatenated with
the zero based field (n) index together with the fill value, if present.
This value is written only when a fill value is defined for the table.</dd>
</dl>
<dl>
<br>&nbsp;
<center><table BORDER=2 BGCOLOR="#FFFFFF" >
<caption><b>Table 1. Attributes of an Image Dataset</b></caption>
<tr>
<td><b>Attribute Name</b></td>
<td><b>(R = Required</b>
<br><b>O= Optional)</b></td>
<td><b>Type</b></td>
<td><b>String Size</b></td>
<td><b>Value</b></td>
</tr>
<tr>
<td>CLASS</td>
<td>R</td>
<td>String</td>
<td>5</td>
<td>&quot;TABLE&quot;</td>
</tr>
<tr>
<td>VERSION</td>
<td>R</td>
<td>String</td>
<td>3</td>
<td>&quot;0.2&quot;</td>
</tr>
<tr>
<td>TITLE</td>
<td>O</td>
<td>String</td>
<td>&nbsp;</td>
<td>
<tr>
<td>FIELD_(n)_NAME</td>
<td>R</td>
<td>String</td>
<td>&nbsp;</td>
<td>
&nbsp;
<tr>
<td>FIELD_(n)_FILL</td>
<td>O*</td>
<td>String</td>
<td>&nbsp;</td>
<td>
&nbsp;
</table>
</center>
</dl>
<p>
<center>
&nbsp;
</center>
<i>* </i>The attribute FIELD_(n)_FILL is written to the table if a fill value is
specified on the creation of the Table. Otherwise, it is not.<p>The following
section of code shows the calls necessary to the creation of a table.
<p><code>/* Create a new HDF5 file using default properties. */<br>
file_id = H5Fcreate( &quot;my_table.h5&quot;, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT );</code> </p>
<p><code>/* Call the make table function */<br>
</code> <code>H5TBmake_table( "Table Title", file_id, "Table1", NFIELDS, NRECORDS, dst_size,&nbsp;<br>
field_names, dst_offset, field_type,&nbsp;<br>
chunk_size, fill_data, compress, p_data )&nbsp;</code> </p>
<p><code> /* Close the file. */<br>
status = H5Fclose( file_id );</code> </p>
</body>