"If I can't calculate it, I don't understand it."
Often attributed to Richard Feynman

Software: EDM and Friends

To assist undestanding of experimental results, we work to develop code to help us understand the results as well as predict new phenomena to investigate experimentally. One major tool is our edm code which we use to determine structures just from electron diffraction data.

EDM software images

A brief guide to installing the code is available in software_install_guide.pdf. Some additional information is available in the edm page, although this may not be 100% up to date.

If you are unfamiliar with Linux, some notes can be found in Linux_Notes.

Two sources for some more simple tricks with cygwin are:

The best method is to download the latest EDM via anonymous cvs:

cvs -d:pserver:anonymous@129.105.122.84:/home/cvsroot checkout edm
or look via a web interface, at the bottom of which you will find a tarball.

Other key tools are:

  • Numis: code for calculating electron diffraction with DFT calculated electron densities or calculating precession electron diffraction intensities. This can be accessed by anonymous cvs:
    cvs -d:pserver:anonymous@129.105.122.84:/home/cvsroot checkout Numis-2.0
    or look via a web interface

  • Semper: a portable image processing code. This can be accessed by cvs to the same site (cvs checkout semper-7.0beta) or look via a web interface, at the bottom of which you will find a tarball.

  • Other code, and older versions are shown at the web interface.