plot_freqdist {lazy.tools}

R Documentation

Plot Univariate Tables or Frequency Distributions of the form (score, freq)

Description

Plot Univariate Tables or Frequency Distributions of the form (score, freq)

Usage

plot_freqdist(
  fd,
  weight = NULL,
  main = "Frequency Distribution",
  numeric = 1,
  space = 0,
  las = 2,
  title = NULL,
  ...
)

Arguments

fd	tables, matrices or data.frames containing univariate frequency distribution (midpoint,freq).
weight	A vector of weights associated with fd[,1]
main	A string to be used as the main title.
numeric	= 0 to plot w/o filling in the missing value of fd[,1].
space	an option to be passed to native barplot (default=0) the value of which specifies the width of the spaces between bars.
las	an option to be passed to native to barplot (default=2) = 0 to rotate h, = 1 to rotate none, = 2 to rotate x, = 3 to rotate both.
title	An alias for main.
...	additional parameters to barplot.

Details

If tab is a class table object created by native table or xtabs function, plot_freqdist(tab) and plot(tab) are similar.

If weight is given, (fd, weight) or(fd[,1], weight) will be considered as the frequency distribution table.
Native barplot is used with space=0 and las=2 and ... options as
barplot( height=fd[,2], names.arg=as.character(fd[,1]) , main=main, space=space, las=las, ... )
When numeric=1 is given (default), min(fd[,1]):max(fd[,1]) will be used as the horizontal names and 0 will be substituted for the missing frequencis.

Value

The object from native barplot.

Examples

set.seed(1701)

score <- 0:10
freq <- c(0,5,10,20,30,40,30,20,10,5,0)
fd <- cbind(score,freq)
plot_freqdist( fd, main="no missing value" )

fd1 <- fd[-c(3,7),]
plot_freqdist( fd1, main="score=2, 6 are missing." )
plot_freqdist( fd1, numeric=0
, main="score=2, 6 are missing and numeric=0." )

tab=table(score)
tab=tab[-c(3,7)]
tab[]=freq[-c(3,7)]
plot( tab, main="using native plot function" )
plot_freqdist( tab, main="from class table object" )

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