statar (version 0.3.0)

tab: Returns cross tabulation

Description

Returns cross tabulation

Usage

tab(x, ...)
tab_(x, vars = NULL, i = NULL, w = NULL, na.rm = FALSE, sort = sort)

Arguments

x

a vector or a data.frame

...

Variable to include. If length is two, a special cross tabulation table is printed although the a long data.frame is always (invisibly) returned.

vars

Used to work around non-standard evaluation.

i

Condition to apply function on certain rows only

w

Frequency weights. Default to NULL.

na.rm

Remove missing values. Default to FALSE

sort

Boolean. Default to TRUE

Value

• a data.frame sorted by variables in ..., and with a columns "n", "Percent", and "Cum." for counts.

Examples

library(dplyr)
N <- 1e2 ; K = 10
df <- data_frame(
  id = sample(c(NA,1:5), N/K, TRUE),
  v1 =  sample(1:5, N/K, TRUE)
)
tab(df[["id"]])
tab(df, id)
df %>% group_by(id) %>% tab()
df %>% group_by(id) %>% tab(v1)
tab(df, id, i = id>=3)