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例如:删除多余的传说,当有多个
require(ggplot2)
require(reshape2)
volcano3d <- melt(volcano)
names(volcano3d) <- c("x", "y", "z")
v <- ggplot(volcano3d, aes(x, y, z = z))
v1 = v + stat_contour(aes(colour=..level..,size=..level..))
有两个传说就在身边,我可以删除其中一个?