| dfapply | R Documentation | 
An apply-type function for data frames.
dfapply(data, FUN, select = TRUE, ...)
| data | data frame | 
| FUN | a function to apply to (some) variables in the data frame | 
| select | a logical, character (naming variables), or numeric vector or a
function used to select variables to which  | 
| ... | arguments passed along to  | 
apply(),
sapply(),
tapply(),
lapply(),
inspect()
dfapply(iris, mean, select = is.numeric)
dfapply(iris, mean, select = c(1,2))
dfapply(iris, mean, select = c("Sepal.Length", "Petal.Length"))
if (require(mosaicData)) {
  dfapply(HELPrct, table, select = is.factor)
  do.call(rbind, dfapply(HELPrct, mean, select = is.numeric))
}
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