5.1 Overview

Running WOMBAT can be as simple as specifying its name at command level, i.e.



A number of options are available, however, to modify the run time behaviour of WOMBAT. These range from simple options to set the verbosity level of screen output or to select a continuation run, to highly specialised options to modify the search strategies for the maximum of the likelihood function. Multiple options can be combined, but some care is required so that options given last do not unintentionally cancel out some of the effects of options given first. Options available are summarised in 5.1, 5.2 and ??.

Run options can be given in three ways :

1. On the command line, e.g. wombat -v -c myparfile.par
2. In a file with the default name RunOptions in the current working directory.
This file must contain a single option per line. If such file exists, it is read before any command line options are parsed. There are no checks for options specified in duplicate. This implies that the last setting for a particular option is the one to be used, and that the options in RunOptions can be overridden by command line options.
3. On the first line of the parameter file, after a code of RUNOP (see 4.3). Any such options are read before options specified on the command line, i.e. the latter may overide them.

Following Linux standard, run options have the form “-a” where a stands for a single, lower-case letter, or the form “––abcdef” where abcdef stands for a multi-letter code.