My macro doesn't work for bwplot. But is working elsewhere.
What changes should i make to fix my macro.
Thanks.
The complete code sample is:
library(gtools)
library(lattice)
pic <- defmacro(fn, plotfunc, expr={png(filename=fn); plotfunc; dev.off()})
# this one fails.
pic("bw.png", {bwplot(Species ~ Sepal.Length, data=iris)})
# this one works
pic("p.png", {plot(iris$Sepal.Length)}
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