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
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