[R] Lexis maps in R

From: Camarda, Carlo Giovanni <Camarda_at_demogr.mpg.de>
Date: Thu 09 Feb 2006 - 04:42:55 EST


Dear R-users,
Sorry for bothering you twice in a day, but I was wondering whether there is any R-function which can easily plot the single elements of a Lexis diagram. I though that Lexis.diagram(Epi) could be the case, but it just plot life times in a frame.
In particular I have been searching for something similar to the function "image" which can plot either the single triangles of a Lexis diagram or the parallelograms (e.g. probability of dying if the event is the death).
I wrote down a simple example in which I played around with the function polygon, but in this case the procedure would be too long (normally data are set in matrix) and also the colors are messed up. Thanks,
Carlo Giovanni Camarda

## a wrong example for giving an idea of what I'd like to plot x <- 0:4
A <- matrix(1:16,ncol=4)
image(x,x,A, col="white")
colo <- rainbow(12)
for(i in 1:4){

    x1 <- c(0,1,2,1)
    y1 <- c(0,0,1,1) + i -1
    x2 <- x1+1
    y2 <- y1
    x3 <- x2+1
    y3 <- y2
    polygon(x1,y1,col=colo[i + i - 1])

    polygon(x2,y2,col=colo[i+i])
    polygon(x3,y3,col=colo[i+i+1])
}

+++++
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