只是爲了記錄在案,好像我終於想出了一個妥善的解決辦法,以感謝爲網格圖全面的自定義選項。在執行c.trellis
之前禁用scales
(通過scales = list(draw = FALSE)
;請注意,文件'rsq.rds'已在線更改),然後使用定製的y軸組合圖解決問題。
## combine plots and increase left padding
plt <- latticeExtra:::c.trellis(rsq_plt, err_plt, layout = c(1, 2))
plt <- update(plt,
scales = list(draw = FALSE),
par.settings = list(
layout.widths = list(left.padding = 6, right.padding = 0),
layout.heights = list(top.padding = 0, bottom.padding = 0)
))
## custom panel.axis
panel.fun <- function(...) {
# allow to draw labels outside panel
trellis.par.set("clip", list(panel = "off", strip = "off"))
# add upper y-axis
if (panel.number() == 1) {
panel.axis("left", at = 1, tck = .5, outside = TRUE,
labels = expression("r"^2))
panel.abline(v = 1, lty = 3, lwd = 1, col = "red")
panel.dotplot(lwd = .5, ...)
}
# add lower y-axis
if (panel.number() == 2) {
panel.axis("left", at = 2:4, outside = TRUE, tck = .5,
labels = c("MAE", "ME", "RMSE"))
panel.abline(v = 0, lty = 3, lwd = 1, col = "red")
panel.dotplot(..., lwd = 0.5)
}
}
## apply custom axes
update(plt, panel = panel.fun)
'c.trellis'會結合你的2個格對象轉換成一個 - 用一組標籤,等我建議'print.trellis'顯示多個格子的對象。特別參見'print.trellis'中的第一個例子。 – DaveTurek