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| ==Disclaimer==
| | This manual has been superseded (replaced) by a PDF: |
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| This description is meant to inform the community how to layout
| | http://svn.smallangles.net/trac/canSAS/browser/1dwg/tags/v1.0/doc/cansas-1d-1_0-manual.pdf?format=raw |
| the information within the XML files. However, should the
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| information in this document and the [[cansas1d.xsd | canSAS 1D SAS XML Schema]]
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| differ, the XML Schema will be deemed to have the most correct description
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| of the standard.
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| ==General Layout of the XML Data==
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| ===required XML file header===
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| <pre>
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| <?xml version="1.0"?>
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| <SASroot version="1.0"
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| xmlns="http://www.smallangles.net/cansas1d"
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| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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| xsi:schemaLocation="http://www.smallangles.net/cansas1d/
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| http://www.smallangles.net/cansas1d/1.0/cansas1d.xsd"
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| >
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| </pre>
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| ===alternative XML file header (referencing a stylesheet)===
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| <pre>
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| <?xml version="1.0"?>
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| <?xml-stylesheet type="text/xsl" href="example.xsl" ?>
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| <SASroot version="1.0"
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| xmlns="http://www.smallangles.net/cansas1d"
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| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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| xsi:schemaLocation="http://www.smallangles.net/cansas1d/
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| http://www.smallangles.net/cansas1d/1.0/cansas1d.xsd"
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| >
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| </pre>
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| | |
| ===overall file: layout of SASroot===
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| After the XML header, the root element of the file is SASroot which
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| contains one or more SASentry elements, each of which describes
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| a single experiment (data set, time-slice, step in a series, new
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| sample, etc.). Details of the SASentry element are also
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| shown in the next figure. Refer to the '''block diagram at SASroot level'''
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| for an alternative depiction.
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| [[Image:cansas1d-v1-1-SASroot.png|100px|none|thumb|block diagram at SASroot level]]
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| <pre>
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| <?xml version="1.0"?>
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| <SASroot version="1.0"
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| xmlns="http://www.smallangles.net/cansas1d"
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| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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| xsi:schemaLocation="http://www.smallangles.net/cansas1d/
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| http://www.smallangles.net/cansas1d/1.0/cansas1d.xsd"
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| >
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| <SASentry name="071121.dat#S22">
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| <!-- contents of the first experiment in the file go here -->
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| </SASentry>
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| <SASentry name="name attribute is optional">
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| <!-- any number of additional experiments can be included, as desired -->
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| </SASentry>
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| </SASroot>
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| </pre>
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| ===block diagrams===
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| There are block diagrams available to describe the standard:
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| *[[media:cansas1d-v1-1-SASroot.png | SASroot]]
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| ** SASentry (data set, time-slice, step in a series, new sample, etc.)
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| ***Title (for this particular SASentry)
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| ***Run (run number or ID number of experiment)
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| ***[[media:cansas1d-v1-2-SASdata.png | SASdata]] (this is where the reduced 1-D SAS data is stored)
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| **[[media:cansas1d-v1-3-SASsample.png | SASsample]]
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| **[[media:cansas1d-v1-4-SASinstrument.png | SASinstrument]]
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| ***[[media:cansas1d-v1-5-SASsource.png | SASsource]]
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| ***[[media:cansas1d-v1-6-SAScollimation.png | SAScollimation]]
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| ***[[media:cansas1d-v1-7-SASdetector.png | SASdetector]]
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| **[[media:cansas1d-v1-8-SASprocess.png | SASprocess]] (for each processing or analysis step)
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| ** SASnote (anything at all)
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| * [[media:cansas1d-v1-9-full.png | full block diagram]]
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| ==Definition of terms==
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| See [[cansas1d_definition_of_terms]] for the complete list of terms (XML elements and XML attributes) in the canSAS 1-D standard.
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| ==Rules==
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| Q-geometry.jpg
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| [[Image:Q-geometry.jpg|thumb|depiction of the defined geometry that defines Q for small-angle scattering]]
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| # Q=(4 π / λ) sin(θ) <br> where λ is the wavelength of the radiation and 2θ is the angle through which the detected radiation has been scattered.
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| # units to be given in standard SI abbreviations (eg, m, cm, mm, nm, K) with the following exceptions:
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| ##um=micrometres
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| ##C=celsius
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| ##A=Angstroms
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| ##percent=%.
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| ##fraction
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| ##a.u.=arbitrary units
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| ##none=no units are relevant (such as dimensionless)
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| # where reciprocal units need to be quoted the format shall be "1/abbreviation"
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| # Unicode characters MUST NOT be used
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| # axes:
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| ##z is along the flight path (positive value in the direction of the detector)
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| ##x is orthogonal to z in the horizontal plane (positive values increase to the right when viewed towards the incoming radiation)
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| ##y is orthogonal to z and x in the vertical plane (positive values increase upwards)
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| #orientation (angles):
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| ##roll is about z
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| ##pitch is about x
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| ##yaw is about y
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| ==Validation of XML against the Schema== | |
| # open browser to: http://www.xmlvalidation.com/
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| # paste content of candidate XML file (with reference in the header to the XML Schema as shown above) into the form
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| # press <validate>
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| # paste content of [[cansas1d.xsd]] XSD file into form and press <continue validation>
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| # check the results
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