2-ary aggregating functions
aggregatinFuntion2 creates statistical summaries of two numerical vectors that
are formula aware.
aggregatingFunction2(fun)
fun |
a function that takes two numeric vectors and computes a summary statistic, returning a numeric vector of length 1. |
This was designed to support functions like cov() which can be used to compute
numerical summaries from two numeric vectors.
The logic of the resulting function is this: 1) If the first two arguments are both formulas,
then those formulas are evaluated (with data) to compute the covariance;
(2) If the first argument is a formula, and the second is NULL,
then the left and ride sides of the formula and data are used to create the
vectors passed to fun;
(3) Else everything is simply passed to fun for evaluation.
a function that generalizes fun to handle a formula/data frame interface.
Earlier versions of this function supported a "bare name + data frame" interface. This functionality has been removed since it was (a) ambiguous in some cases, (b) unnecessary, and (c) difficult to maintain.
if(require(mosaicData)) {
foo <- aggregatingFunction2(stats::cor)
foo(length ~ width, data = KidsFeet)
stats::cor(KidsFeet$length, KidsFeet$width)
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.