r - 如何获得与 ggtern 中显示的值匹配的 geom_crosshair_tern 线？

Question

我没有成功获得与geom_crosshair_tern我的绘图外显示的数据值匹配的线（X，Y，Z）。它们没有直角（我想更改线条位置，而不是数据值位置）。

我怎样才能解决这个问题？

谢谢你的帮助。

这是我的脚本：

points1 <- data.frame(
    rbind(c( 1,25,45,30),
          c( 2,33,33,34),
          c( 3,15,75,10)
    )
)
colnames(points1) = c("IDPoint","X","Y","Z")

labFnc <- function(x,digits=2) format(round(unique(x),digits),digits=digits)

#geom_crosshair_tern version


base2 = ggtern(data=points1,aes(X,Y,Z)) +
    theme_bw() +
    geom_crosshair_tern(lty=2)+
    tern_limits(labels=c(20,40,60,80,100), breaks=seq(0.2,1,by=0.2)) +
    theme_clockwise() +
    theme_showarrows() +
    theme_nomask() + 
    labs(title  = "Test",Tarrow = "% Y",Larrow = "% X",Rarrow = "% Z") +
    theme(tern.axis.arrow=element_line(size=1,color="black")) +
    geom_point(shape=21,size=5,col="black",bg="slategray1") +
    geom_text(aes(label=IDPoint), color="black") +
    annotate(geom  = 'text',
             x     = points1$X,
             y     = c(0),
             z     = 100-points1$X,
             vjust = c(-0., -0., -0.),
             hjust = c(-0.25, -0.25, -0.25),
             angle = c(-60,-60,-60),
             label = paste("X=",points1$X)) +
    annotate(geom  = 'text',
             x     = 100-points1$Y,
             y     = points1$Y,
             z     = c(0),
             vjust = c(+0.25, 0.25, 0.25),
             hjust = c(1, +1, 1),
             label = paste("Y=",points1$Y)) +
    annotate(geom  = 'text',
             x     = c(0), 
             y     = 100-points1$Z,
             z     = points1$Z,
             vjust = c(+0.3, 0.3, 0.3),
             hjust = c(-0.25, -0.25, -0.25),
             angle = c(60,60,60),
             label = paste("Z=",points1$Z))  

print(base2)

以及我得到的图片：

标签： rggplot2ggtern