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.. _class_docs:
Class Documentation
-------------------
.. toctree::
PyLaGriT Class <autodoc_pylagrit.rst>
Mesh Class <autodoc_mo.rst>
Point Set Class <autodoc_pset.rst>
Element Set Class <autodoc_eltset.rst>
Face Set Class <autodoc_faceset.rst>
Region Class <autodoc_region.rst>

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Element Set Object
------------------
.. automodule:: pylagrit
.. autoclass:: EltSet
:members:
:undoc-members:

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Face Set Object
---------------
.. automodule:: pylagrit
.. autoclass:: FaceSet
:members:
:undoc-members:

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Mesh Object
-----------
.. automodule:: pylagrit
.. autoclass:: MO
:members:
:undoc-members:

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Point Set Object
----------------
.. automodule:: pylagrit
.. autoclass:: PSet
:members:
:undoc-members:

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PyLaGriT
--------
.. automodule:: pylagrit
.. autoclass:: PyLaGriT
:members:
:undoc-members:

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Region Object
-------------
.. automodule:: pylagrit
.. autoclass:: Region
:members:
:undoc-members:

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# -*- coding: utf-8 -*-
#
# PyLaGriT documentation build configuration file, created by
# sphinx-quickstart on Tue Oct 4 10:10:46 2016.
#
# This file is execfile()d with the current directory set to its
# containing dir.
#
# Note that not all possible configuration values are present in this
# autogenerated file.
#
# All configuration values have a default; values that are commented out
# serve to show the default.
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
#
# import os
# import sys
# sys.path.insert(0, os.path.abspath('.'))
# -- General configuration ------------------------------------------------
# If your documentation needs a minimal Sphinx version, state it here.
#
# needs_sphinx = '1.0'
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = [
'sphinx.ext.autodoc',
'sphinx.ext.doctest',
'sphinx.ext.mathjax',
#'sphinx.ext.githubpages',
]
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# The suffix(es) of source filenames.
# You can specify multiple suffix as a list of string:
#
# source_suffix = ['.rst', '.md']
source_suffix = '.rst'
# The encoding of source files.
#
# source_encoding = 'utf-8-sig'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = u'PyLaGriT'
copyright = u'2016, Dylan R. Harp'
author = u'Dylan R. Harp'
# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
version = u'0'
# The full version, including alpha/beta/rc tags.
release = u'0.0.0'
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#
# This is also used if you do content translation via gettext catalogs.
# Usually you set "language" from the command line for these cases.
language = None
# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
#
# today = ''
#
# Else, today_fmt is used as the format for a strftime call.
#
# today_fmt = '%B %d, %Y'
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
# This patterns also effect to html_static_path and html_extra_path
exclude_patterns = []
# The reST default role (used for this markup: `text`) to use for all
# documents.
#
# default_role = None
# If true, '()' will be appended to :func: etc. cross-reference text.
#
# add_function_parentheses = True
# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
#
# add_module_names = True
# If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default.
#
# show_authors = False
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'
# A list of ignored prefixes for module index sorting.
# modindex_common_prefix = []
# If true, keep warnings as "system message" paragraphs in the built documents.
# keep_warnings = False
# If true, `todo` and `todoList` produce output, else they produce nothing.
todo_include_todos = False
# -- Options for HTML output ----------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
#
html_theme = 'alabaster'
# Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the
# documentation.
#
# html_theme_options = {}
# Add any paths that contain custom themes here, relative to this directory.
# html_theme_path = []
# The name for this set of Sphinx documents.
# "<project> v<release> documentation" by default.
#
# html_title = u'PyLaGriT v0.0.0'
# A shorter title for the navigation bar. Default is the same as html_title.
#
# html_short_title = None
# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
#
# html_logo = None
# The name of an image file (relative to this directory) to use as a favicon of
# the docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
#
# html_favicon = None
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['static']
# Add any extra paths that contain custom files (such as robots.txt or
# .htaccess) here, relative to this directory. These files are copied
# directly to the root of the documentation.
#
# html_extra_path = []
# If not None, a 'Last updated on:' timestamp is inserted at every page
# bottom, using the given strftime format.
# The empty string is equivalent to '%b %d, %Y'.
#
# html_last_updated_fmt = None
# If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities.
#
# html_use_smartypants = True
# Custom sidebar templates, maps document names to template names.
#
# html_sidebars = {}
# Additional templates that should be rendered to pages, maps page names to
# template names.
#
# html_additional_pages = {}
# If false, no module index is generated.
#
# html_domain_indices = True
# If false, no index is generated.
#
# html_use_index = True
# If true, the index is split into individual pages for each letter.
#
# html_split_index = False
# If true, links to the reST sources are added to the pages.
#
# html_show_sourcelink = True
# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
#
# html_show_sphinx = True
# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
#
# html_show_copyright = True
# If true, an OpenSearch description file will be output, and all pages will
# contain a <link> tag referring to it. The value of this option must be the
# base URL from which the finished HTML is served.
#
# html_use_opensearch = ''
# This is the file name suffix for HTML files (e.g. ".xhtml").
# html_file_suffix = None
# Language to be used for generating the HTML full-text search index.
# Sphinx supports the following languages:
# 'da', 'de', 'en', 'es', 'fi', 'fr', 'hu', 'it', 'ja'
# 'nl', 'no', 'pt', 'ro', 'ru', 'sv', 'tr', 'zh'
#
# html_search_language = 'en'
# A dictionary with options for the search language support, empty by default.
# 'ja' uses this config value.
# 'zh' user can custom change `jieba` dictionary path.
#
# html_search_options = {'type': 'default'}
# The name of a javascript file (relative to the configuration directory) that
# implements a search results scorer. If empty, the default will be used.
#
# html_search_scorer = 'scorer.js'
# Output file base name for HTML help builder.
htmlhelp_basename = 'PyLaGriTdoc'
# -- Options for LaTeX output ---------------------------------------------
latex_elements = {
# The paper size ('letterpaper' or 'a4paper').
#
# 'papersize': 'letterpaper',
# The font size ('10pt', '11pt' or '12pt').
#
# 'pointsize': '10pt',
# Additional stuff for the LaTeX preamble.
#
# 'preamble': '',
# Latex figure (float) alignment
#
# 'figure_align': 'htbp',
}
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title,
# author, documentclass [howto, manual, or own class]).
latex_documents = [
(master_doc, 'PyLaGriT.tex', u'PyLaGriT Documentation',
u'Dylan R. Harp', 'manual'),
]
# The name of an image file (relative to this directory) to place at the top of
# the title page.
#
# latex_logo = None
# For "manual" documents, if this is true, then toplevel headings are parts,
# not chapters.
#
# latex_use_parts = False
# If true, show page references after internal links.
#
# latex_show_pagerefs = False
# If true, show URL addresses after external links.
#
# latex_show_urls = False
# Documents to append as an appendix to all manuals.
#
# latex_appendices = []
# It false, will not define \strong, \code, itleref, \crossref ... but only
# \sphinxstrong, ..., \sphinxtitleref, ... To help avoid clash with user added
# packages.
#
# latex_keep_old_macro_names = True
# If false, no module index is generated.
#
# latex_domain_indices = True
# -- Options for manual page output ---------------------------------------
# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = [
(master_doc, 'pylagrit', u'PyLaGriT Documentation',
[author], 1)
]
# If true, show URL addresses after external links.
#
# man_show_urls = False
# -- Options for Texinfo output -------------------------------------------
# Grouping the document tree into Texinfo files. List of tuples
# (source start file, target name, title, author,
# dir menu entry, description, category)
texinfo_documents = [
(master_doc, 'PyLaGriT', u'PyLaGriT Documentation',
author, 'PyLaGriT', 'One line description of project.',
'Miscellaneous'),
]
# Documents to append as an appendix to all manuals.
#
# texinfo_appendices = []
# If false, no module index is generated.
#
# texinfo_domain_indices = True
# How to display URL addresses: 'footnote', 'no', or 'inline'.
#
# texinfo_show_urls = 'footnote'
# If true, do not generate a @detailmenu in the "Top" node's menu.
#
# texinfo_no_detailmenu = False

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Getting Started
===============
Installation
------------
The Python module PyLaGriT allows LaGriT to be accessed interactively and in batch mode from Python.
To install PyLaGriT on your system, change to the PyLaGriT directory and run ``python setup.py install``.
Alternatively, the PyLaGriT folder can be added to your **PYTHONPATH** environment variable.
Due to the use of the pexpect Python module, PyLaGriT does not work on Windows.
It has been tested on Mac and Linux operating systems.
Since PyLaGriT is simply a frontend for LaGriT, you will need a lagrit executable to use PyLaGriT.
To use the paraview and gmv methods, you will need ParaView (http://www.paraview.org) and GMV (http://www.generalmeshviewer.com) installed, respectively.
To avoid specifying the LaGriT, ParaView, and GMV executable locations, copy the **pylagritrc_example** file:
.. literalinclude:: ../../pylagritrc_example
in the PyLaGriT folder to your home directory or working directory changing its name to either **pylagritrc** or **.pylagritrc** and uncomment and change the path locations.
Simple example
--------------
The following is a PyLaGriT script for creating a simple cube shaped mesh using the :func:`gridder <pylagrit.PyLaGriT.gridder>` and `connect <pylagrit.PyLaGriT.connect>` methods:
.. code-block:: python
# Import PyLaGriT class from pylagrit module
from pylagrit import PyLaGriT
# Create PyLaGriT object
# This assumes that pylagritrc is being used so that lagrit_exe option does not need to be specified
l = PyLaGriT()
# Create x,y,z arrays for location of points
x = range(1,5)
y = range(1,5)
z = range(1,5)
# Create mesh object using x,y,z arrays
m = l.gridder(x,y,z)
# Connect points
m.connect()
# Visualize connected mesh using ParaView
# This assumes that pylagritrc is being used so that exe option does not need to be specified
m.paraview()
The script can be pasted line by line into a Python or IPython terminal, or saved in a file (e.g., ``script.py``) and run on the command line as ``python script.py``.
This will open up ParaView with the mesh loaded:
.. image:: cube.png
Next steps
----------
Additional example PyLaGriT scripts are provided in the PyLaGriT/examples folder and in the :ref:`class_docs`.
Combining LaGriT and Python functionality
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
An example of using PyLaGriT to facilitate looping over LaGriT functionality is described in the :func:`merge method <pylagrit.PyLaGriT.merge>` documentation, where a mesh is successively copied, translated and merged into a larger mesh.
Other examples of usage are provided for other methods and more will be added in the future.
User defined error checking
^^^^^^^^^^^^^^^^^^^^^^^^^^^
Since PyLaGriT stores the LaGriT terminal output from each command in the PyLaGriT object attribute ``before``, user-defined error checking can be easily implemented.
The example provided with the :func:`refine method <pylagrit.EltSet.refine>` demonstrates this by checking for the string `The mesh is complete but could not include all points.` in the LaGriT output using ``lg.before``.
In this example, an error message is printed to the screen and the script is aborted.

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.. PyLaGriT documentation master file, created by
sphinx-quickstart on Tue Oct 4 10:10:46 2016.
You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
PyLaGriT, Python interface for LaGriT
=====================================
.. include:: ../../README
.. toctree::
:maxdepth: 2
Getting Started <gettingstarted.rst>
Stratigraphic Hex Mesh Tutorial <stratigraphic.rst>
Class Documentation <autodoc.rst>
PyLaGriT source code is packaged with LaGriT source code `here <https://github.com/lanl/LaGriT>`_.
Example scripts can be found `here <https://github.com/lanl/LaGriT/tree/master/PyLaGriT/examples>`_.
Development team
################
* Dylan Harp <dharp@lanl.gov>
* Daniel Livingston <livingston@lanl.gov>
* James (Joe) Beisman <jjbeisman@gmail.com>
* Terry Miller <tamiller@lanl.gov>
* Carl Gable <gable@lanl.gov>
Indices and tables
==================
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`

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Stratigraphic Hex Mesh Tutorial
===============================
Written by Guoyan Jiang (gyjiang@whu.edu.cn) with technical support from Dylan Harp (dharp@lanl.gov) and Terry Miller (tamiller@lanl.gov).
The associated LaGriT tutorial is `here <https://lanl.github.io/LaGriT/pages/tutorial/stratigraphy/index.html>`_.
This example script can be downloaded `here <https://github.com/lanl/LaGriT/blob/master/PyLaGriT/examples/stratigraphic_hex_mesh_tutorial.py>`_.
.. literalinclude:: ../../examples/stratigraphic_hex_mesh_tutorial.py
The final result:
.. image:: stratigraphy.png

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