tab: Table of frequencies or relative frequencies bordered with...

In gmonette/spida15: Collection of miscellaneous functions for mixed models etc. prepared for SPIDA 2009+ (development version)

Description

Generates a table of frequencies or relative frequencies or relative percentages

Usage

tab( df, ~ a + b )

tab( df, ~ a + b , pct = 1)

tab( ~ a + b + c , df, pr = c(1,2))

tab( a, b, c )

tab( a, b, c, weights = w)

tab( w ~ a + b + c, df)

Tab( a, b, c, Weights = w, pct = 1, keep = 1)

Arguments

...	as with table, one or more objects which can be interpreted as factors (including character strings), or a list (or data frame) whose components can be so interpreted.
data	a data frame in which formula are interpreted
fmla	a formula whose right-hand side names the variables to be used for tabulation. The optional left-hand side specifies a variable to be used for weights.
useNA	whether to include NA levels. The default is "ifany". Can also be set to "no" or "always".
pct	margins to be scaled to sum to 100
pr	margins to be scaled to sum to 1
total.margins	if FALSE, generate table without margins
weights	instead of generating a frequency table, generate a table with the sum of the weights
keep	names of margins to keep with 'Tab', default = "All". To drop all margins, use default = "".

Value

An object of class 'table' of dimension equal to the number of variables, with optional margins showing totals. Elements of the matrix can be frequencies, relative frequencies, percentages or sums of weights.

Author(s)

Georges Monette

Examples

titanic <- as.data.frame(Titanic)
head(titanic)
tab(titanic, ~ Sex + Age, weights = Freq) 

tab(titanic, ~ Sex + Survived + Age, weights = Freq)

round(tab(titanic, ~ Sex + Survived + Age, 
    pct = c(1,3), weights = Freq),2)

round(Tab(titanic, ~ Sex + Survived + Age, 
    pct = c(1,3), weights = Freq),2)

round(Tab(titanic, ~ Sex + Survived + Age, 
    pct = c(1,3), weights = Freq, keep = ""),2)

gmonette/spida15 documentation built on May 17, 2019, 7:26 a.m.