a transformation to be applied prior to summarization
reporterIDs
vector specifying the set of IDs to be summarized
reporterTags
a vector that divides the supplied IDs into categories
reporterFun
a function used to summarize each category
Details
The function can be used to calculate summarized values for particular control types on a section. The IDs for all controls are supplied in the reporterIDs argument along with which control type they belong to in the reporterTags argument. A summarized value for each control type is then calculated with the specified function (default is mean).