TracePlot(FitAR)R Documentation

plot time series controlling the aspect-ratio

Description

Cleveland (1993) pointed out that the aspect-ratio is important in graphically showing the rate-of-change or shape information. For many time series, it is preferably to set this ratio to 0.25 than the default. In general, Cleveland shows that the best choice of aspect-ratio is often obtained by if the average apparent absolute slope in the graph is about 45 deg. But for many stationary time series, this would result in an aspect-ratio which would be too small. As a comprise we have chosen a default of 0.25 but the user can select other choices.

Usage

TracePlot(z, aspect = 0.25, type = "l", ylab=NULL, main=NULL, ...)

Arguments

z a ts-object or vector containing the time series
aspect desired aspect-ratio for plot
type plot type, default type="l" join points with lines
ylab vertical axis title
main optional title
... optional arguments passed to plot

Details

If z has attribute "title" containing a character string, this is used on the plot. Time series input using the function readts always have this attribute set.

Value

no return value

Note

The aspect-ratio may also be controlled in the lattice function xyplot that is used in the function TimeSeriesPlot.

Author(s)

A.I. McLeod

References

W.S. Cleveland (1993), Visualizing Data.

See Also

ts, plot.ts, ts.plot, Readts, TimeSeriesPlot

Examples

#from built-in datasets
 TracePlot(AirPassengers)
 title(main="Monthly number of trans-Atlantic airline passengers")
#
#compare plots for lynx series
plot(lynx)
win.graph()
TracePlot(lynx, type="o", pch=16, ylab="# pelts", main="Lynx Trappings")

[Package FitAR version 1.0 Index]