On 04/15/2010 12:36 AM, senne wrote:
hi R gurus
I saw some graphs with vertical band like this one:
http://pragcap.com/wp-content/uploads/2010/04/GS.png
how to draw the blue band in R, can't find any clue to do this,any ideas?
Hi senne,
The rect function in base graphics can do the job. First do the plot
with type="n" (i.e. no plotting), then display your rectangles:
xylim<-par("usr")
rect.left<-as.Date(seq(paste(rep(c("Dec","Mar","Jun","Sep"),length.out=10),
c("07","08","08","08","08","09","09","09","09","10"),sep="-")))
rect.right<-rect.left+10
rect(rect.left,xylim[3],rect.right,xylim[4],col="lightblue",border="lightblue")
then draw the line and text labels.
Warning - untested
Jim
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