carpet plots

On Jul 2, 2012, at 2:05 PM, Richard M?ller wrote:

Hi all,
I wonder why there is so little software for carpet plots (german:
Rasterdiagramm) (Three dimensional plot (x, y, z), the 3rd dimension
(z) symbolized by colourgradients). Besides from one or the other non
free software I only found an OpenOffice macro, a combination of
Gnuplot and Excel (an Excel macro calling gnuplot)
(http://www.johannes-hopf.de/2009/12/carpet-plot-version-1-3/9 and
Quikgrid (http://www.galiander.ca/quikgrid/) which I use for
bathymetric maps.

Though I use one or two R scripts I have no deeper knowledge. Because
I think "That's a thing R can do!", I suppose, there are scripts for
this purpose. Perhaps one of you knows such a script. I would be very
grateful if you could point me to some information on this subject.

You need to expand you search list:

?heatmap
?levelplot
?contour
.... and many others


Here's an example with base graphics cobbled together from the last  
example on help(contour)

image(x,y,volcano)
line.list <- contourLines(x, y, volcano)

contour(x, y, volcano, col = tcol[2], lty = "solid", add = TRUE,
            vfont = c("sans serif", "plain"))
templines <- function(clines) {
 lines(clines[[2]], clines[[3]])
}
invisible(lapply(line.list, templines))

-- 
David.

Richard

-- 
Richard M?ller . Am Spring 9 . D-58802 Balve
www.oeko-sorpe.de

_