# Welcome to Fable

#### Presentation

ImageD11 is a software package for analysis of 2D diffraction images.
The package includes facilities for peak searching in two dimensional area detector images using a simple threshold. Fable Graphical user interface helps you to use ImageD11 programs and

- To display Data in table/grid,
- To display peaks via imageviewer in image data,
- To calibrate of the extracted peak positions and their transformation into scattering vectors (or g-vectors) in reciprocal space.

In cases where relatively few grains are illuminated by the beam the package is capable of indexing the diffraction spots and refining unit cell parameters and orientation matrices. ImageD11 is mainly written using the python language, with a few extension modules in c for increased performance. You need to install python 2.4 or greater. The program is dependent on the prior installation of several packages which are packages with this plugin:
(you don't need to use them with fable-imageD11)

- A 2D numerical array package: numpy,
- Matplotlib : you might need to edit your matplotlibrc to use the right Numeric/numpy.

To have more informations about file format, see link :File format
Peaksearching in raw 2D images... Calibration... Transformation... Coming soon in fable :
Refinement of diffractometer geometry, grains and crystal translations...
Filtering to zap out any dubious peaks...