densityPlot {openintro} | R Documentation |
Compute kernel density plots, written in the same structure as boxPlot
. Histograms can be automatically added for teaching purposes.
densityPlot(x, fact = NULL, bw = "nrd0", histo = c("none", "faded", "hollow"), breaks = "Sturges", fading = "0E", fadingBorder = "25", lty = NULL, lwd = 1, col = c("black", "red", "blue"), key = NULL, add = FALSE, adjust = 1, kernel = c("gaussian", "epanechnikov", "rectangular", "triangular", "biweight", "cosine", "optcosine"), weights = NULL, n = 512, from, to, na.rm = FALSE, xlim = NULL, ylim = NULL, main = "", ...)
x |
A numerical vector. |
fact |
A character or factor vector defining the grouping for data in x . |
bw |
Bandwidth. See density . |
histo |
Whether to plot a faded histogram ('faded' ) or hollow histogram ('hollow' ) in the background. By default, no histogram will be plotted. |
breaks |
The breaks argument for histPlot if histo is 'faded' or 'hollow' . |
fading |
Character value of hexadecimal, e.g. '22' or '5D' , describing the amount of fading inside the rectangles of the histogram if histo='faded' . |
fadingBorder |
Character value of hexadecimal, e.g. '22' or '5D' , describing the amount of fading of the rectangle borders of the histogram if histo is 'faded' or 'hollow' . |
lty |
Numerical vector describing the line type for the density curve(s). Each element corresponds to a different level of the argumentfact . |
lwd |
Numerical vector describing the line width for the density curve(s). Each element corresponds to a different level of the argumentfact . |
col |
Numerical vector describing the line color for the density curve(s). Each element corresponds to a different level of the argumentfact . |
key |
An argument to specify ordering of the factor levels. |
add |
If TRUE , the density curve is added to the plot. |
adjust |
Argument passed to density to adjust the bandwidth. |
kernel |
Argument passed to density to select the kernel used. |
weights |
Argument passed to density to weight observations. |
n |
Argument passed to density to specify the detail in the density estimate. |
from |
Argument passed to density specifying the lowest value to include in the density estimate. |
to |
Argument passed to density specifying the largest value to include in the density estimate. |
na.rm |
Argument passed to density specifying handling of NA values. |
xlim |
x-axis limits. |
ylim |
y-axis limits. |
main |
Title for the plot. |
... |
If add=FALSE , then additional arguments to plot . |
David Diez
data(tips) par(mfrow=c(2,2)) histPlot(tips$tip[tips$day == 'Tuesday'], hollow=TRUE, xlim=c(0, 30), lty=1, main='Tips by day') histPlot(tips$tip[tips$day == 'Friday'], hollow=TRUE, border='red', add=TRUE, main='Tips by day') legend('topright', col=c('black', 'red'), lty=1:2, legend=c('Tuesday', 'Friday')) densityPlot(tips$tip, tips$day, col=c('black', 'red'), main='Tips by day') legend('topright', col=c('black', 'red'), lty=1:2, legend=c('Tuesday', 'Friday')) data(run10) densityPlot(run10$time, histo='faded', breaks=15, main='Run time') densityPlot(run10$time, histo='hollow', breaks=30, fadingBorder='66', lty=1, main='Run time')