feather.plot: Display vectors along a horizontal reference line

In plotrix: Various Plotting Functions

Display vectors along a horizontal reference line

Description

Displays vectors along a line usually representing time or position.

Usage

 feather.plot(r,theta,xpos,yref=0,use.arrows=TRUE,
 col.refline="lightgray",fp.type="s",main="",xlab="",ylab="",
 xlabels=NULL,...)

Arguments

r	radii of vectors
theta	direction of vectors in radians
xpos	where to start each vector along the reference line
yref	vertical position to place the reference line
use.arrows	whether to put arrow heads on the ends of the vectors
col.refline	the color of the reference line
fp.type	whether to use "standard" coordinates (begin at the right and move counterclockwise) or "meteorological" coordinates (begin at the top and move clockwise) when interpreting the values of ‘⁠theta⁠’
main	the title of the plot
xlab	the label for the reference line
ylab	the label for the vertical axis
xlabels	optional labels for the reference line
...	additional arguments passed to ‘⁠arrows⁠’ or ‘⁠segments⁠’

Details

This function places vectors of length ‘⁠r⁠’ and angle ‘⁠theta⁠’ along a reference line that may represent time or position or some other value. The user is responsible for spacing the vectors so that they do not overlap if this is desired.

Feather plots are typically wider than high. The user will probably want to specify a graphics device that doesn't leave lots of blank space above and below the plot.

Value

nil

Author(s)

Jim Lemon, Eduardo Klein

See Also

spread.labels

Examples

 dev.new(width=8,height=3)
 r<-0.6+rnorm(24)/5
 theta<-c(seq(15*pi/16,pi/16,length.out=12),
  seq(17*pi/16,31*pi/16,length.out=12))
 feather.plot(r,theta,xlabels=1:24,
  main="Standard Coordinates",xlab="Time",ylab="Value")
 # rearrange theta for meteorological coordinates
 feather.plot(r,c(theta[19:24],rev(theta[7:18]),theta[1:6]),xlabels=1:24,fp.type="m",
  main="Meteorological Coordinates",xlab="Time",ylab="Value")
 dev.off()

plotrix documentation built on Nov. 10, 2023, 5:07 p.m.