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levelplot blocks size

Greg Snow 
Here is a basic example: 

tmp.df <- expand.grid( x= 1:100, y=1:100 )
tmp.df$z <- with(tmp.df, x+2*y)

library(lattice)
levelplot( z ~ x + y, data=tmp.df )

tx2 <- with(tmp.df, cut(x, seq(0.5, 100.5, 10) ) )
ty2 <- with(tmp.df, cut(y, seq(0.5, 100.5, 20) ) )

tmp.df2 <- aggregate(tmp.df, list( tx2, ty2 ), mean )

levelplot( z ~ x + y, data=tmp.df2 )


Hope this helps,

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Jonathan levelplot blocks size Dec 15 Jonathan levelplot blocks size Dec 19 Duncan Murdoch levelplot blocks size Dec 19 Jonathan levelplot blocks size Dec 19 Duncan Murdoch levelplot blocks size Dec 19 Jonathan levelplot blocks size Dec 26 Greg Snow levelplot blocks size Dec 27 Jonathan levelplot blocks size Dec 27 Greg Snow levelplot blocks size Dec 28