mosaic: aggregatingAux – R documentation

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mosaic

aggregatingAux

Aggregate for mosaic

Description

Compute function on subsets of a variable in a data frame.

Usage

maggregate(
  formula,
  data = parent.frame(),
  FUN,
  groups = NULL,
  subset,
  drop = FALSE,
  ...,
  .format = c("default", "table", "flat"),
  .overall = mosaic.par.get("aggregate.overall"),
  .multiple = FALSE,
  .name = deparse(substitute(FUN)),
  .envir = parent.frame()
)

Arguments

`formula`	a formula. Left side provides variable to be summarized. Right side and condition describe subsets. If the left side is empty, right side and condition are shifted over as a convenience.
`data`	a data frame. Note that the default is `data = parent.frame()`. This makes it convenient to use this function interactively by treating the working environment as if it were a data frame. But this may not be appropriate for programming uses. When programming, it is best to use an explicit `data` argument – ideally supplying a data frame that contains the variables mentioned in `formula`.
`FUN`	a function to apply to each subset
`groups`	grouping variable that will be folded into the formula (if there is room for it). This offers some additional flexibility in how formulas can be specified.
`subset`	a logical indicating a subset of `data` to be processed.
`drop`	a logical indicating whether unused levels should be dropped.
`...`	additional arguments passed to `FUN`
`.format`	format used for aggregation. `"default"` and `"flat"` are equivalent.
`.overall`	currently unused
`.multiple`	a logical indicating whether FUN returns multiple values Ignored if `.multiple` is not `NULL`.
`.name`	a name used for the resulting object
`.envir`	an environment in which to evaluate expressions

Value

a vector

Examples

if (require(mosaicData)) {
maggregate( cesd ~ sex, HELPrct, FUN = mean )
# using groups instead
maggregate( ~ cesd, groups = sex, HELPrct, FUN = sd )
# the next four all do the same thing
maggregate( cesd ~ sex + homeless, HELPrct, FUN = mean )
maggregate( cesd ~ sex | homeless, HELPrct, FUN = sd )
maggregate( ~ cesd | sex , groups= homeless, HELPrct, FUN = sd )
maggregate( cesd ~ sex, groups = homeless, HELPrct, FUN = sd )
# this is unusual, but also works.
maggregate( cesd ~ NULL , groups = sex, HELPrct, FUN = sd )
}

mosaic

Project MOSAIC Statistics and Mathematics Teaching Utilities

v1.8.3

GPL (>= 2)

Authors

Randall Pruim [aut, cre], Daniel T. Kaplan [aut], Nicholas J. Horton [aut]

Initial release

aggregatingAux

Description

Usage

Arguments

Value

Examples

mosaic

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