On 12/11/2013 10:33 AM, Hodge, Steven wrote:
I'm working with radial.plot in the plotrix package.
Is there a way to show a shaded region for a specific range of values in
radial.lim?
For example:
# test data from radial.plot{plotrix}
testlen<-c(sin(seq(0,1.98*pi,length=100))+2+rnorm(100)/10)
testpos<-seq(0,1.98*pi,length=100)
# the original plot
radial.plot(testlen,testpos,rp.type="p",main="Test Polygon",line.col="blue")
# my attempt to shade the region between 3 and 3.5:
radial.plot(
matrix(c(3.5, 3), byrow = TRUE),
matrix(c(testpos, testpos), byrow = TRUE, nrow = 2),
rp.type="p",
main="Test Polygon",
poly.col = c('light blue', 'white'),
radial.lim = c(0, 3.5)
)
# In effect, draw a polygon at 3.5 filled with light blue, then another at 3
filled with white.
# Now overplot the values of interest:
radial.plot(testlen,testpos,rp.type="p",main="Test Polygon",line.col="blue",
radial.lim = c(0, 3.5), add = TRUE)
Is there an easier way? How can I re-draw the grid lines that are in the
original plot?
Hi Steve,
That is a tricky one. The best I can do at the moment is to suggest the
following be added:
radial.grid(radial.lim=c(0,3.5),
grid.pos=seq(0,3.5,length.out=8))
radial.plot(testlen,testpos,rp.type="p",
main="",line.col="blue",add=TRUE)
There may be a solution using the radial.pie function, and if I find it,
I'll post it.
Jim
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