如何为三个相似的时间/值图使用公共轴

plot

points

lines

dat1 <- data.frame(Time = c(1.023, 2.564, 3.678, 5.023), Value = c(5.786, 10.675, 14.678, 17.456))
dat2 <- data.frame(Time = c(0.787, 1.567, 3.011, 4.598), Value = c(1.765, 3.456, 5.879, 7.768))
dat3 <- data.frame(Time = c(1.208, 2.478, 3.823, 5.125), Value = c(3.780, 6.890, 9.091, 12.769))

with(dat1, plot(Time, Value, xlim = c(0,6), ylim = c(0,20)))
with(dat2, points(Time, Value, col = \"red\"))
with(dat3, points(Time, Value, col = \"green\"))

ggplot2

library(ggplot2)
library(reshape)
plotdata <- melt(list(dat1 = dat1, dat2 = dat2, dat3 = dat3), \"Time\")

qplot(Time, value, data = plotdata, colour = L1)

t1 <- \"Time Value
1.023   5.786
2.564   10.675
3.678   14.678
5.023   17.456\"

t2 <- \"Time Value
0.787   1.765
1.567   3.456
3.011   5.879
4.598   7.768\"

t3 <- \"Time Value
1.208   3.780
2.478   6.890
3.823   9.091
5.125   12.769\"

tex1 <- read.table(textConnection(t1), header = TRUE)
tex2 <- read.table(textConnection(t2), header = TRUE)
tex3 <- read.table(textConnection(t3), header = TRUE)

plot(tex1, type=\"l\", xlim=range(tex1$Time, tex2$Time, tex3$Time), ylim=range(tex1$Value, tex2$Value, tex3$Value), main=\"Common Time Axis for 3 Data Series\", col=\"black\")
grid()
lines(tex2, col=\"red\")
lines(tex3, col=\"blue\")

xlim

plot

xlim

points

lines