QGRAF-R has been released (May 2016);
two related papers available online (Feb 2017).
QGRAF is a computer program that can generate
It was written to assist in large perturbative calculations, in the context of Quantum Field Theory.
Programming language: FORTRAN 77 (there should be some
evolution in the next major release).
Binaries/executables are not distributed; the source code has to be compiled and linked, eg with gfortran.
Latest release: version 3.1.4 (2012).
This release is nearly identical to version 3.1.2, the differences being as follows:
the source file is now compatible with gfortran without further ado;
the input files may now contain an UTF-8 byte order mark, which some applications prepend to text files.
The algorithm used to generate the diagrams is described — in its basic form — in the following article:
J. Comput. Phys. 105 (1993) 279-289
QGRAF-R is a computer program that can find
The model files accepted as input are exactly those accepted by QGRAF.
Some of the theory behind QGRAF-R is described in these papers:
A login window should appear when you first click on one of the
links displayed below; then enter
NB: all access is logged; the username should be entered correctly, access will be denied if there is any typo or even extra space.
The following links let you pick either a tgz type archive or the individual files. There are two (incompatible) versions to choose from; the latest one is recommended unless, for compatibility reasons, version 2.0 is really required.
compressed archives ( tar + gzip )
There is also a tool (designed for 'unix-like' environments) to convert model and style files written for version 2.0 into files suitable for versions 3.x.
For now QGRAF-R should be treated as a beta-release; it seems to work, though.
To report a problem or send in some other useful comments,