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103 lines
3.1 KiB
HTML
103 lines
3.1 KiB
HTML
<HTML><HEAD>
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<TITLE>HDF5 File Organization
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</TITLE>
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</HEAD>
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<body bgcolor="#ffffff">
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<!-- BEGIN MAIN BODY -->
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[ <A HREF="title.html"><I>HDF5 Tutorial Top</I></A> ]
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<H1>
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<BIG><BIG><BIG><FONT COLOR="#c101cd">HDF5 File Organization</FONT>
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</BIG></BIG></BIG></H1>
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<hr noshade size=1>
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<BODY>
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<P>
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An HDF5 file is a container for storing a variety of scientific data
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is composed of two primary types of objects: groups and datasets.
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<UL>
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<LI><B>HDF5 group:</B> a grouping structure containing zero or more HDF5
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objects, together with supporting metadata
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<LI><B>HDF5 dataset:</B> a multidimensional array of data elements, together
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with supporting metadata
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</UL>
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Any HDF5 group or dataset may have an associated attribute list. An <B>HDF5
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attribute</B> is a user-defined HDF5 structure that provides extra information
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about an HDF5 object.
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<P>
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Working with groups and datasets is similar in many
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ways to working with directories and files in UNIX. As with UNIX directories
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and files, an HDF5 object in an HDF5 file is often referred to by its
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<B>full path name</B> (also called an <B>absolute path name</B>).
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<UL>
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<CODE>/</CODE> signifies the root group.<BR>
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<CODE>/foo</CODE> signifies a member of the root group called <code>foo</code>.
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<BR>
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<CODE>/foo/zoo</CODE> signifies a member of the group <code>foo</code>, which in
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turn is a member of the root group.
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</UL>
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<P>
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<!--
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In this tutorial, we consider:
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<UL>
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<LI>how to create a file
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<LI>how to create a group
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<LI>how to create/read/write datasets
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<LI>how to create an attribute
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<LI>how to create a grouping structure
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<LI>how to create datasets in groups
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</UL>
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The rest of the tutorial is organized as follows:
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<UL>
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<LI> Section 3 describes the HDF5 APIs.
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<LI> Section 4 shows how to create an HDF5 file.
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<LI> Section 5 shows how to create a dataset.
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<LI> Section 6 shows how to read from and write to a dataset.
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<LI> Section 7 shows how to create an attribute.
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<LI> Section 8 shows how to create a group.
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<LI> Section 9 discusses HDF5 names and shows how to create groups using absolute and relative names.
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<LI> Section 10 shows how to create datasets in groups.
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</UL>
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Each section contains step by step instructions and an example. After the
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example, an HDF5 tool is used to examine the file contents. A formal definition
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of HDF5 objects in Backus-Naur Form is given last.
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The tutorial ends with a glossary and references.
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-->
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<P>
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<!-- BEGIN FOOTER INFO -->
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<P><hr noshade size=1>
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<font face="arial,helvetica" size="-1">
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<a href="http://www.ncsa.uiuc.edu/"><img border=0
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src="footer-ncsalogo.gif"
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width=78 height=27 alt="NCSA"><br>
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The National Center for Supercomputing Applications</A><br>
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<a href="http://www.uiuc.edu/">University of Illinois
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at Urbana-Champaign</a><br>
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<br>
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<!-- <A HREF="helpdesk.mail.html"> -->
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<A HREF="mailto:hdfhelp@ncsa.uiuc.edu">
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hdfhelp@ncsa.uiuc.edu</A>
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<br>
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<BR> <H6>Last Modified: June 22, 2001</H6><BR>
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<!-- modified by Barbara Jones - bljones@ncsa.uiuc.edu -->
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<!-- modified by Frank Baker - fbaker@ncsa.uiuc.edu -->
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</FONT>
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<BR>
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<!-- <A HREF="mailto:hdfhelp@ncsa.uiuc.edu"> -->
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</BODY>
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</HTML>
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