[R] carpet plots

[David Winsemius]

On Jul 2, 2012, at 3:11 PM, David Winsemius wrote:

>
> On Jul 2, 2012, at 2:05 PM, Richard Müller 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)
# I did say "cobbled",
# .... and I am likely throwing errors since 'tcol' was not in that  
code.

tcol <- terrain.colors(12)

> 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 Müller . Am Spring 9 . D-58802 Balve
>> www.oeko-sorpe.de
>>
>> _

>

David Winsemius, MD
West Hartford, CT