On 10/28/2010 07:14 AM, Gonzalo Garcia-Perate wrote:
I am creating radial plots to visualise popularity of a series of
topics, I was wondering if someone has come across a radial plot in
which the lines originate from the edge of the plot instead of the
centre, does anyone know how can this be achieved in R? Are there any
good reasons not to do it?
Hi Gonzalo,
This is an interesting suggestion. I suppose it could be done with an
"invert" routine that swapped the center coordinates for those of the
outer ring of the annular grid for each radial line. I think I have seen
something like this to illustrate some sort of genetic information.
Yep, down about line 139 in my code you could define xposmax and yposmax
if the new argument "invert" was TRUE, then
if(invert) {
xposmax<-cos(radial.pos[i,])*maxlength
yposmax<-sin(radial.pos[i,])*maxlength
}
if(match("r",rptype,0)) {
if(invert)
segments(xposmax,yposmax,xpos,ypos,
col=linecol,lty=ltype,lwd=lwidth,...)
else
segments(0,0,xpos,ypos,col=linecol,
lty=ltype,lwd=lwidth,...)
Untested, but it might do what you want.
Jim
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