A more versatile form of the T-SQL count() function.

Implementation of T-SQL count and Excel COUNTIF functions. Shows the total number of elements in any number of data objects altogether or that match a condition.

Usage

count(..., condition = (function(x) TRUE))

Arguments

...: an arbitrary number of R objects
condition: a 1 argument condition

Examples

count(c(NA,1,2))
#> [1] 3
count(c(NA,1,2),is.na)
#> [1] 4
count(c(NA,1,2),list('A',4),cbind(1,2,3))
#> [1] 8
count(c(NA,1,2),list('A',4),cbind(1,2,3),condition=is.character)
#> [1] 1