我有一个格子图,显示三个系列,在条带中标记为 A、B、C。在图表中,我使用 panel.text 添加了最大值。但是,我怎样才能在条带名称旁边添加此信息?(例如在顶部条带中:最大值=2.61)
#Libraries used:
library(lattice)
#Data: Create three random walks:
A <- c(rnorm(99), cumsum(rnorm(99)))
B <- c(rnorm(99), cumsum(rnorm(99)))
C <- c(rnorm(99), cumsum(rnorm(99)))
#combine data into a dataframe:
df1 <- data.frame(A,B,C)
df1
#create a time series for use in xyplot:
ts1 <- ts(df1, start=-100, end=-1, frequency=1)
#create a lattice chart:
chart1 <-xyplot(ts1 ,
panel=function(x,y)
{
panel.xyplot(x,y)
panel.lines(x,y)
y=round(y,2)
lab1 <- names(y)
panel.text(-80,min( y)*0.9, paste(lab1,"max:",max(y)), cex = 1.2, font =2,col="blue")
})
chart1
谢谢您的帮助。