Display vectors along a horizontal reference line
Displays vectors along a line usually representing time or position.
feather.plot(r,theta,xpos,yref=0,use.arrows=TRUE, col.refline="lightgray",fp.type="s",main="",xlab="",ylab="", xlabels=NULL,...)
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 |
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.
nil
Jim Lemon, Eduardo Klein
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()
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