[R-sig-Geo] spplot question

[Edzer Pebesma]

Eric, I've been reading your email over and over, but cannot understand
what you want. I also could not find a question, despite your subject.
--
Edzer

Eric Morway wrote:
> Hello,
>
> I've been working on an image created with spplot and with help have
> gotten it very close to the final product.  One final modification I
> would like to make involves filling in grid cells with values less
> than the minimum value on the legend with the color corresponding to
> the bottom of the legend.  In the attached figure, the minimum legend
> value is 10, but there a few spots with values as low as 0.01. These
> cells are currently blank/white.  I would like to avoid including this
> value on my legend due to the color spread on the plot becoming
> homologous, that is, I would like the color spread to be maximized
> between 10-1000.  Were I to go from 0.01-1000, the range I'm most
> interested in (10-1000) would be confined to a more narrow range of
> the legend.  I have played around with trying to specify a different
> number of cuts for the legend vs plot area, but this causes a
> disconnect between the legend and the colors displayed for the
> different grid cells.  The spplot line looks like this (image attached):
>
> pts<-list("sp.points",K.dat,pch=3,col="black",labels=as.character(K.dat$Kh))
>
> cuts<-c(10,20,30,40,50,60,70,80,90,100,200,300,400,500,600,700,800,900,1000)
>
> spplot(lzm.krige.dir["var1.pred"],at=cuts,colorkey=list(at=log10(cuts),labels=as.character(cuts)),scales=list(draw=TRUE),
>  
> xlab="Easting",ylab="Northing",key.space="right",cex=1.1,col.regions=terrain.colors(22),main="Hydraulic
> Conductivity of Layer 2",sp.layout=list(pts))
>
> Respectfully,
> Eric Morway
>
> ------------------------------------------------------------------------
>
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-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de/
http://www.springer.com/978-0-387-78170-9 e.pebesma at wwu.de