# Chooch

CHOOCH is a program that will automatically determine values of the anomalous scattering factors, $f^{\prime}$ and $f^{\prime\prime}$, directly from experimentally measured X-ray fluorescence data. It outputs the $f^{\prime}$ and $f^{\prime\prime}$ spectrum and the appropriate X-ray wavelengths to be used for MAD or SAD experiments.
The current version 5.0.7 contains the following features.
1. Written in C using a minimal set of support libraries
2. Command line driven with all options controlled by switches
3. Optional PGPLOT visual output (PGPLOT not required for compilation/installation)
4. Publication quality PS and PNG output generated on request
5. Data fitting and feature extraction based on known/measured beamline energy resolution
6. Available with the latest CCP4 distribution
Installing CGraph
Correcting source errors
cgaxes.c
Line 13: */ missing from end of line
gfont.c
Line 8: */ missing from end of line