Calculates one plus two. Writes "3" to standard output.
stilts calc 'isoToMjd("2005-12-25T00:00:00")'
Works out the Modified Julian Day corresponding to Christmas 2005.
The output is "53729.0".
stilts calc 'param$author' table=catalogue.xml
In this case the expression is evaluated in the context of the
supplied table, which means that the table's parameters can be
referenced in the expression. This example just outputs the
value of the table parameter named "author".