使用auto.key在格子中填充符号的颜色 [英] Symbol fill color in lattice using auto.key

问题描述

我正在使用lattice(R 15.2，晶格0.20-13)中的xyplot进行绘图，其中我想通过标记的形状区分几个组.我需要使用一个向下的三角形，该三角形只能作为空心符号(pch=25)使用，而向上的三角形则可以用作实心(pch=17)或空心(pch=24)符号.我可以在par.settings(superpose.line())中为这些符号指定轮廓色和填充色，但是当我绘制auto.key时，没有填充.有什么方法可以使auto.key与绘图符号一致?

I'm making a plot using xyplot in lattice (R 15.2, lattice 0.20-13) in which I have several groups that I would like to distinguish by the shape of the marker. I need to use a downward facing triangle which is only available as a hollow symbol (pch=25) unlike up triangle which is available as a filled (pch=17) or hollow (pch=24) symbol. I can specify both the outline color and the fill color for these symbols in par.settings(superpose.line()), but when I plot an auto.key, there is no fill. Is there some way to get the auto.key to be consistent with the plot symbols?

这是我正在描述的示例:

This is an example of what I'm describing:

data <- data.frame(x_var = rep(1:10, 2), y_var = rnorm(20), group=rep(c(1,2),each=10))

xyplot(y_var ~ x_var, groups=group, data=data,
       par.settings=list(superpose.symbol=list(col=c("red", "blue"), fill=c("red", "blue"), pch=c(24, 25), cex=2)),
       auto.key=list(space="right"))

推荐答案

我已经尝试了您的版本和今天(0.20-14)在CRAN 可用.他们两个都无法填充图例的符号.但是，您的代码在版本 0.20下正确运行-10 .因此，恐怕您发现了一个错误.您可以发送电子邮件给维护者吗?

I have tried both your version and the version available at CRAN today (0.20-14). Both of them fail to fill the symbols of the legend. However, your code works correctly with version 0.20-10. Therefore, I am afraid you have found a bug. Could you send an email to the maintainer?

更新:此错误已在0.20-15版中修复.

UPDATE: This bug has been fixed in version 0.20-15.

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