dfbhist: Hybrid Plot for DFBETAS

In psre: Presenting Statistical Results Effectively

Hybrid Plot for DFBETAS

Description

Plots a hybrid histogram, dot plot for DFBETAS. A histogram is plotted for the observations below cutval. Observations above cutval are plotted and labelled with individual points.

Usage

dfbhist(
  data,
  varname,
  label,
  cutval = 0.25,
  binwidth = 0.025,
  xlab = "DFBETAS",
  ylab = "Frequency",
  xrange = NULL,
  yrange = NULL,
  nudge_x = NULL,
  nudge_y = NULL
)

Arguments

data	A data frame of DFBETAS values
varname	The name of the variable to plot
label	Name of variable that holds the labels that will go with the points
cutval	The value that separates the histogram from the individual points.
binwidth	The bin width for the histogram part of the display.
xlab	Label to put on the x-axis.
ylab	Label to put on the y-axis.
xrange	Alternative range to plot on the x-axis.
yrange	Alternative range to plot on y-axis
nudge_x	Vector of values to nudge labels horizontally.
nudge_y	Vector of values to nudge labels vertically.

Value

A ggplot.

Examples

data(wvs)
wvs <- na.omit(wvs[,c("country", "secpay", "gini_disp", "democrat")])
lmod <- lm(secpay ~ gini_disp + democrat, data=wvs)
dba <- dfbetas(lmod)
dbd <- wvs
dbd$dfb_ginil <- dba[,2]^2
dbd$dfb_democl <- dba[,3]^2
dfbhist(dbd, "dfb_ginil", "country")

psre documentation built on Aug. 8, 2022, 5:05 p.m.