NXdata

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XML Meta-DTD Definition for NXdata.xml

This follows the XML Meta-DTD Definition format and can be downloaded from http://svn.nexusformat.org/definitions/tags/PRE_NXDL/base_classes/NXdata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
URL:     http://www.nexus.anl.gov/classes/xml/NXdata.xml
Editor:  NIAC
$Id: NXdata.xml 4 2005-07-19 04:10:26Z rio $

Template of plottable data and their dimension scales. It is mandatory that
there is at least one group of this type in each NXentry group.  Note that
"variable" and "data" can be defined with different names.  The "signal" and
"axes" attribute of the "data" item define which items are plottable data and
which are dimension scales.

-->
<NXdata name="{Name of data block}">
	<variable type="NX_FLOAT[:]|NX_INT[:]" long_name="{Axis label}" distribution="0|1" first_good="{Index of first good value}" last_good="{Index of last good value}">
		{Dimension scale defining an axis of the data}?
	</variable>
	<variable_errors type="NX_FLOAT[:]|NX_INT[:]">
		{Errors associated with axis "variable"}?
	</variable_errors>
	<data type="NX_FLOAT[:...]|NX_INT[:...]" signal="1" axes="[...]" long_name="{Title of data}">
		{Data values}?
	</data>
	<errors type="NX_FLOAT[:...]">
		{Standard deviations of data values - the data array is identified by the attribute signal="1". This array must have the same dimensions as the data}?
	</errors>
</NXdata>

Tabular Representation of XML Meta-DTD

(automatically generated from http://svn.nexusformat.org/definitions/tags/PRE_NXDL/base_classes/NXdata.xml)

NXdata

Name Type Description Attributes
variableNX_FLOAT[:]|NX_INT[:]Dimension scale defining an axis of the data
long_name="{Axis label}"

distribution="0|1"
first_good="{Index of first good value}"
last_good="{Index of last good value}"

variable_errorsNX_FLOAT[:]|NX_INT[:]Errors associated with axis "variable"
dataNX_FLOAT[:...]|NX_INT[:...]Data values
signal="1"

axes="[...]"
long_name="{Title of data}"

errorsNX_FLOAT[:...]Standard deviations of data values - the data array is identified by the attribute signal="1". This array must have the same dimensions as the data

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