apply.shrink: Apply a function to a vector for a combination of categories.
In geo: Draw and Annotate Maps, Especially Charts of the North Atlantic

Description Usage Arguments Value Note See Also Examples

Apply a function to a vector for a combination of categories.

1	apply.shrink(X, INDICES, FUN = NULL, names, ...)

`X`	Input data to `FUN`
`INDICES`	list of categories to be combined
`FUN`	Function to be applied
`names`	Column names for the resulting dataframe
`...`	Additional arguments to `FUN`

Dataframe of outcomes applying FUN to X for the combination of categories in INDICES

Needs elaboration, or could be dropped/hidden, use merge instead.

apply.shrink.dataframe, merge

## stupid example, showing naming of results
names(apply.shrink(depthloc$z,
  list(a=round(depthloc$lat), b=round(depthloc$lon)), mean))
names(apply.shrink(depthloc$z, list(round(depthloc$lat),
  round(depthloc$lon)), mean, names = c("a", "b", "z")))