[R-sig-Geo] Changing colour gradient in Spatstat surface plot

[Marcelino de la Cruz]

Maybe this synthesis of both replies can help you:


library(RColorBrewer)
bl5 <- brewer.pal(5, "Blues")
mypal <- colorRampPalette(bl5)

  library(spatstat)
  data(longleaf)
  Z <- smooth.ppp(longleaf)
  plot(Z)
  plot(Z, col=mypal(12))

#or

plot(Z, col=rev(mypal(12)))



Regards,


Marcelino


At 20:59 29/04/2008, Graham Smith wrote:
>Adrian
>
>Thanks for the reply
>
> > Here is an example of the whole process, starting from a marked point
> > pattern and finishing with a colour image:
> >
> >       library(spatstat)
> >       data(longleaf)
> >       Z <- smooth.ppp(longleaf)
> >       plot(Z)
> >       plot(Z, col=topo.colors(256))
>
>This is what I did, but I couldn't find, and still can't find,
>anything in the help for plot.im or topo,colors that explains how to
>change the colours to graduated blue, am  being really dim here.
>
>However, in another post it was suggested I use rColorbrewer to set
>up the colours , but it worries me that I cannot find the bit in the
>help you have sent me to.
>
>Graham
>         [[alternative HTML version deleted]]
>
>_______________________________________________
>R-sig-Geo mailing list
>R-sig-Geo at stat.math.ethz.ch
>https://stat.ethz.ch/mailman/listinfo/r-sig-geo

________________________________

Marcelino de la Cruz Rot

Departamento de  Biología Vegetal
E.U.T.I. Agrícola
Universidad Politécnica de Madrid
28040-Madrid
Tel.: 91 336 54 35
Fax: 91 336 56 56
marcelino.delacruz at upm.es