i find the new data function capabilities in Spotfire really useful and the ability to pin data functions to an easily accessible data function panel is very handy. However the long list of functions looks a bit intimidating.
It would make it much easier to see what types of functionality was available and to browse for particular functionality if the data functions were categorized and grouped in the UI - similar to how data columns are categorized and grouped.
Ideally the data function creator could specify a default category that could be changed by the Spotfire administrator or perhaps even the user.