Cadpac will both perform normal modes analyses, which can be visualised using Eadfrith or other programs. First, however, files of the right format must be created, using the utility cadpacNMA as appropriate. This utility was writed by Mark Mackey.
CadpacNMA is a small program designed to make the analysis of molecular normal modes calculated using the CADPAC package easier. CadpacNMA outputs a MacroModel multistructure data file showing the normal mode of interest.
CadpacNMA takes as input a Macromodel data file and a CADPAC output file
containing a normal mode analysis (either numerical or through second
derivatives). Note that the Macromodel data file MUST contain the atomic
coordinates as they were presented to CADPAC for the normal mode analysis, or
the results will be nonsensical. It is suggested that the Macromodel file be
generated directly from the CADPAC file using cad2mmod to avoid this problem.
The syntax is 'cadpacNMA