要使用graphics
包在 R 中,可以创建新变量作为值var.a
and var.b
转换为各个变量中最大值的比例:
test <- data.frame(group = 1:10, var.a = rnorm(n = 10, mean = 500, sd = 20),
var.b = runif(10))
funProp <- function(testCol) {
test[, testCol]/max(test[, testCol])
}
test$var.a.prop <- funProp("var.a")
test$var.b.prop <- funProp("var.b")
然后使用绘制绘图barplot()
没有轴:
barplot(t(as.matrix(test[, c("var.a.prop", "var.b.prop")])), beside = TRUE,
yaxt = "n", names.arg = test$group)
然后使用标签的原始值范围(labels
参数)和将标签放置在轴上的比例值范围(at
论证)(这部分不太漂亮,但它完成了工作):
axis(2, at = seq(0, max(test$var.a.prop), length.out = 10),
labels = round(seq(0, max(test$var.a), length.out = 10)))
axis(4, at = seq(0, max(test$var.b.prop), length.out = 10),
labels = round(seq(0, max(test$var.b), length.out = 10), 2))
(抱歉没有图片)
EDIT:
为了得到一点轴pretty
er,
myLeftAxisLabs <- pretty(seq(0, max(test$var.a), length.out = 10))
myRightAxisLabs <- pretty(seq(0, max(test$var.b), length.out = 10))
myLeftAxisAt <- myLeftAxisLabs/max(test$var.a)
myRightAxisAt <- myRightAxisLabs/max(test$var.b)
barplot(t(as.matrix(test[, c("var.a.prop", "var.b.prop")])),
beside = TRUE, yaxt = "n", names.arg = test$group,
ylim=c(0, max(c(myLeftAxisAt, myRightAxisAt))))
axis(2, at = myLeftAxisAt, labels = myLeftAxisLabs)
axis(4, at = myRightAxisAt, labels = myRightAxisLabs)