[R] [External] latticeExtra

[Richard M. Heiberger]

This works.
> d$zz <- factor(d$z, levels=c("low","med","high"))
> d$xx <- as.factor(d$x)
> cloud(y~xx+zz, d, panel.3d.cloud=panel.3dbars, col.facet='grey', 
+       xbase=0.4, ybase=0.4, scales=list(arrows=FALSE, col=1), 
+       par.settings = list(axis.line = list(col = "transparent")))
> 

the default levels for factor are alphabetic.  That is ok for d$x.