xrayutilities 1.1.0-beta

package for x-ray diffraction data evaluation

xrayutilities is a collection of scripts used to analyze x-ray diffraction data. It consists of a python package and several routines coded in C. It especially useful for the reciprocal space conversion of diffraction data taken with linear and area detectors.

Copyright (C) 2009-2013 Dominik Kriegner <[e-mail]>

Copyright (C) 2009-2013 Eugen Wintersberger <[e-mail]>

Contents

• examples: directory with example scripts and configurations

• python: directory with the sources for the python package

• setup.py: distutils install script used for the package installation

• xrayutilities.pdf: pdf-file with documentation of the package

Installation

Installing xrayutilities is an easy process done by executing

$> python setup.py install

or

$> python setup.py install --prefix=<install_path>

in the source folder of xrayutilities on the command line/terminal. The first command installs in the systems default directories, whereas in the second command you can manually specify the installation path.

By default the setup.py script tries to use OpenMP. If you do not want to use OpenMP use –without-openmp option for the installation

$> python setup.py --without-openmp install --prefix=<install_path>

For the installation the following requirements need to be installed on your system

• Python

• C-compiler (preferential with OpenMP support)

• HDF5

• pytables

• scipy

• numpy

• matplotlib (optionally)

refer to your operating system documentation to find out how to install those packages. On Microsoft Windows refer to the Documentation for the easiest way of the installation (python(x,y)).

On Microsoft Windows with python(x,y) it is furthermore necessary to manually specify the C compiler used for building the extension modules using

$> python setup.py build -c mingw32

before the installation can be performed as described above.

Python-2.7 and Python-3.X compatibility

The current developement focues Python-3.X and we ask all users to update to Python-3 if possible, however, xrayutilies can be used with Python-2.7 as well. Care was taken to make this possible from the same code-base

The python package configuration

The following steps should only be necessary for user local installation to ensure the python module is found by the python interpreter: In this case the module is installed under <prefix>/lib[64]/python?.?/site-packages on Unix systems and <prefix>/Lib/site-packages on Windows systems.

If you have installed the Python package in a directory unknown to your local Python distribution, you have to tell Python where to look for the Package. There are several ways how to do this:

• add the directory where the package is installed to your PYTHONPATH environment variable.

• add the path to sys.path in the .pythonrc file placed in your home directory

  import sys
  sys.path.append("path to the xrayutilities package")

• simply apply the previous method in every script where you want to use the xrayutilities package before importing the package

  import sys
  sys.path.append("path to the xrayutilities package")
  import xrayutilities

Obtaining the source code

The sources are hosted on sourceforge in git repository. Use

$> git clone git://git.code.sf.net/p/xrayutilities/code xrayutilities

to clone the git repository. If you would like to have commit rights contact one of the administrators.

UPDATE

if you already installed xrayutilities you can update it by navigating into its source folder and obtain the new sources by

$> git pull

or download the new tarball from sourceforge (http://sf.net/projects/xrayutilities) if any code changed during the update you need to reinstall the python package. To determine the path in which xrayutilities where installed previously use

$> python -c "import xrayutilities as xu; print xu.__file__"
/usr/local/lib64/python2.7/site-packages/xrayutilities/__init__.pyc

if the output is e.g.: “/usr/local/lib64/python2.7/site-packages/xrayutilities/__init__.py” you previously installed xrayutilities in “/usr/local”, which should be used again as install path. Use

$> python setup.py install --prefix=<path to install directory>

to install the updated package.

DOCUMENTATION

Documention for xrayutilities is found in the xrayutilities.pdf file or on the webpage http://xrayutilities.sourceforge.net

The API-documentation can also be browsed by

$> pydoc -p PORT

in any web-browser, after the installation is finished.

To build the PDF documentation from the docu-sources use:

python setup.py build_doc -b latex cd build/sphinx/latex; make

You will need sphinx and pdflatex including latex-recommended, latex-extra and fonts-recommended.

Or generate a texinfo file using

python setup.py build_doc -b texinfo cd build/sphinx/texinfo; make

PACKAGING

create a tarball for redistribution of xrayutilities without the use of git

$> python setup.py sdist

creates a tarball in the directory dist, which contains everything needed for the installation of xrayutilities