freq: Absolute and Percentage Frequencies of the Responses to the...

In fsia: Import and Analysis of OMR Data from FormScanner

Description

Calculates and plots the absolute or percentage frequencies of the responses to each item.

Usage

freq(obj, columns, perc = FALSE)
## S3 method for class 'frlist'
plot(x, display = TRUE, ask = TRUE, ...)

Arguments

obj	An object containing the data imported by function read.formscanner and eventually the key added by function addkey.
columns	A vector containing which columns to use. Columns can be specified by name or number.
perc	logical; if TRUE percentage frequencies are calculated.
x	An object of class frlist returned by function freq.
display	logical; if TRUE the frequencies are displayed on the plot.
ask	logical; if TRUE the user is asked for input, before a new figure is drawn.
...	further arguments passed to or from other methods.

Value

Function freq returns an abject of class frlist containing a list with components

item	the name of the item.
tab	an object of class table containing the frequencies.
key	the key of the item.

Author(s)

Michela Battauz

See Also

read.formscanner

Examples

data(test)
data(key)
testk <- addkey(test, keydata = key)

fr <- freq(obj = testk, col = c("Question03", "Question04"))
fr
par(mfrow=c(1,2))
plot(fr, ask = FALSE)
fr <- freq(obj = testk, col = 2:11, perc = TRUE)
fr
par(mfrow = c(2,5))
plot(fr, ask = FALSE)

fsia documentation built on May 2, 2019, 5:42 a.m.