plot：y轴为R中的因子

I'm struggling with a plot. I have a vector "a":

我在苦苦挣扎。我有一个矢量“a”：

   h1    h2    h3    h4 
1.000 0.880 0.746 0.761

These are data of normalized concentration of an element in a soil profile.

这些是土壤剖面中元素的归一化浓度的数据。

I would like to have on the x axis the concentration (1, 0.880, 0.746, 0.761) and on the y axis the different horizons (h1, h2, h3, h4). But I would like the y axis to go downward (as in a soil profile), and the x axis on the top of that plot.

我想在x轴上具有浓度（1,0.880,0.746,0.761）并且在y轴上具有不同的视野（h1，h2，h3，h4）。但我希望y轴向下（如在土壤剖面中），并且x轴在该图的顶部。

Here's what I've got so far: (I have tried many other things but without success)

这是我到目前为止所得到的:(我尝试过很多其他的东西，但没有成功）

test=factor(names(a))
plot(a,test)
axis(3)

This shouldn't be so hard but even after checking ?axis, ?plot and ?par, I can't manage to get what I want.

这应该不是那么难，但即使在检查？轴，？情节和？标准之后，我也无法得到我想要的东西。

1 个解决方案

#1

Instead of that, you may want to customize your plot:

而不是那样，你可能想要自定义你的情节：

require(ggplot2)
a <- data.frame(horizon = c("h1", "h2", "h3", "h4"), vals = c(1.000, 0.880, 0.746, 0.761))
ggplot(a, aes(x = vals, y = horizon)) +
  geom_point() +  
  scale_y_discrete(limits = rev(levels(a$horizon)))+
  scale_x_continuous(position = "top")

The ggplot2 package is far easier to customize.

ggplot2包更容易定制。

#1