55 lines
1.9 KiB
HTML
Executable File
55 lines
1.9 KiB
HTML
Executable File
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
|
<html>
|
|
<head>
|
|
<title>H5Part, Logical Internal HDF5 File Layout</title>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
|
|
<meta name="keywords" content="scientific visualization">
|
|
<meta name="sitemap" content="put a brief descriptive phrase here that will show up in the site map:foo">
|
|
|
|
|
|
<div id="maincenter">
|
|
<font face="arial,helvetica"><h1>H5Part: Logical Internal HDF5 File Layout</h1></font>
|
|
<P>
|
|
HDF5 is extremely flexible in the sense that it allows the user to define a higher level data model to describe domain-specific data relationships. This flexibility however makes it necessary to develop an agreement on the logical layout of the data. The H5Part data model consists of Particle groups corresponding to the simulation time steps, each with seven datasets corresponding to x, px, y, py, z, pz, id for each particle. Attributes can be added to the file and to the datasets.
|
|
</P>
|
|
<center><img src="layout.png"></center>
|
|
<PRE>
|
|
HDF5 "parttest.h5" {
|
|
GROUP "/" {
|
|
GROUP "Particles#0" {
|
|
DATASET "id" {
|
|
DATATYPE H5T_STD_I64LE
|
|
DATASPACE SIMPLE { ( 10 ) / ( 10 ) }
|
|
}
|
|
DATASET "px" {
|
|
DATATYPE H5T_IEEE_F64LE
|
|
DATASPACE SIMPLE { ( 10 ) / ( 10 ) }
|
|
}
|
|
DATASET "py" {
|
|
DATATYPE H5T_IEEE_F64LE
|
|
DATASPACE SIMPLE { ( 10 ) / ( 10 ) }
|
|
}
|
|
DATASET "pz" {
|
|
DATATYPE H5T_IEEE_F64LE
|
|
DATASPACE SIMPLE { ( 10 ) / ( 10 ) }
|
|
}
|
|
DATASET "x" {
|
|
DATATYPE H5T_IEEE_F64LE
|
|
DATASPACE SIMPLE { ( 10 ) / ( 10 ) }
|
|
}
|
|
DATASET "y" {
|
|
DATATYPE H5T_IEEE_F64LE
|
|
DATASPACE SIMPLE { ( 10 ) / ( 10 ) }
|
|
}
|
|
DATASET "z" {
|
|
DATATYPE H5T_IEEE_F64LE
|
|
DATASPACE SIMPLE { ( 10 ) / ( 10 ) }
|
|
}
|
|
}
|
|
</PRE>
|
|
<P>
|
|
See <a href="http://www-vis.lbl.gov/Publications/2002/hdf5.pdf">hdf5.pdf</a> for an introduction on the use of HDF5.
|
|
</P>
|
|
</div>
|
|
|