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4 changes: 4 additions & 0 deletions static_root/doc/pdfgetx/2.4.0/.buildinfo
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102 changes: 102 additions & 0 deletions static_root/doc/pdfgetx/2.4.0/_sources/files.rst.txt
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Files used in PDF extraction
========================================================================

.. include:: abbreviations.txt
.. _my-configfile:
.. program:: pdfgetx3

Configuration file
------------------------------------------------------------------------

Configuration files may define the PDF processing parameters.
By default, the :program:`pdfgetx3` program attempts to read
:file:`.pdfgetx3.cfg` file from the user HOME directory,
then :file:`.pdfgetx3.cfg` and :file:`pdfgetx3.cfg` files
from the current working directory.
If configuration file has a different name, it needs to be specified
with the :option:`-c, --config <-c>` option.
The :program:`pdfgetn3` program works in the same way,
except it checks for configuration files
:file:`~/.pdfgetn3.cfg`, :file:`.pdfgetn3.cfg` and :file:`pdfgetn3.cfg`.

The easiest way of creating a configuration file is to generate
a template content using the :option:`--createconfig` option as ::

pdfgetx3 --createconfig=test.cfg

and then change the generated test.cfg file in your favorite text
editor. The configuration file follows a simple "varname=value" syntax,
any lines starting with "#" are ignored as comments.

The configuration file has several sections marked as ``[SECTIONNAME]``.
The ``[DEFAULT]`` section is mandatory and it contains the default
global settings. Any other sections are optional and they are applied
only when selected with the :option:`-s, --section <-s>` option on the
command line. Thus ::

pdfgetx3 --config=test.cfg --section=nacl

would read the parameters from the ``[nacl]`` section after reading the
defaults. Having several sections in the configuration
file is useful when there are multiple measurements that share most of
the parameters, but differ in a few of them, for example in chemical
composition. The configuration file can then contain sections per each
sample that define only the composition, while all other parameters are
specified just once in the global DEFAULT section.


Input files
------------------------------------------------------------------------

PDFgetX3 and PDFgetN3 accept input powder diffraction data
in the form of two-column text file,
where the first column x is either the scattering angle
|twotheta| in degrees, momentum transfer *Q* in inverse nanometers or *Q*
in inverse ångströms. The second column y contains the corresponding
scattered intensities normalized per unit solid angle. The actual type
of the x-values is identified by the :confval:`dataformat` parameter.
The input files may contain header with comments or metadata, and the
actual data are read from the first long section of numerical values.

The input files are usually passed as command-line arguments to
:program:`pdfgetx3` or :program:`pdfgetn3` programs and must be paths
accessible from the current working directory.

Input files can be also defined by setting the :confval:`inputfile`
value in the configuration file. The :option:`-d, --datapath <-d>`
option can be then used to provide additional data directories to
search for these inputs and for the :confval:`backgroundfile`.
This is to support configuration files located in a different
directory than the data.

When the :option:`--find <-f>` option is active, the pdfgetx3 arguments
are understood as filename patterns and the input files are found
in the current or specified directory.


Output files
------------------------------------------------------------------------

PDFgetX3 and PDFgetN3 can produce up to four different output data files:

* .iq -- |IQ|, the background-corrected
intensities sampled on a regular *Q*-space grid in inverse ångströms,

* .sq -- |SQ|, the total scattering structure function,
with intensities normalized by average scattering factors and
corrected by a polynomial fit,

* .fq -- |FQ|, the reduced structure function equal to *Q*\ (|SQ| - 1),

* .gr -- |Gr|, the resultant PDF, where the first column is the
separation *r* in ångströms and the second is the function *G* in
Å\ :sup:`-2`.

You can specify what output files should be produced by setting the
:confval:`outputtypes` parameter in the configuration file or by
passing the :option:`-t, --outputtypes <-t>` on the command line.

The header of all output files contains the parameter values that were
used in the calculation and thus it is by itself a valid configuration
file. When passed as an argument to the :option:`--config <-c>` option,
the PDFgetX3 will reproduce the previous calculation.
38 changes: 38 additions & 0 deletions static_root/doc/pdfgetx/2.4.0/_sources/index.rst.txt
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.. PDFgetX3 documentation master file, created by
sphinx-quickstart on Tue Sep 21 18:35:11 2010.
You can adapt this file completely to your liking,
but it should at least contain the root `toctree` directive.

########################################################################
diffpy.pdfgetx
########################################################################

User manual for PDFgetX3, PDFgetN3, PDFgetS3 and Python package diffpy.pdfgetx.

| Release |release|
| |today|

========================================================================
Table of contents
========================================================================


.. toctree::
:maxdepth: 2

intro
install
quick-start
tutorial
files
interact
options
plotdata
release

========================================================================
Indices
========================================================================

* :ref:`genindex`
* :ref:`search`
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