[R-br] trellis.focus com grid.arrange

[Elias T. Krainski]

Se tenho

library(Matrix)
library(lattice)
library(gridExtra)
m1 = sparseMatrix(i=c(1,1,2,3,4,4,4,5), j=c(3,4,4,1,2,3,5,4), x=1:8)
m2=m1/2
grid.arrange(image(m1), image(m2), ncol=2)

Como faco para panel.text() funcionar no plot da esquerda?

Elias