nlevels（对象）出错：缺少参数“object”，没有默认值

I'm trying to change the default color values in the HairEyeColor package in R and keep getting the error in nlevels when I run this:

我正在尝试更改R中HairEyeColor包中的默认颜色值,并在运行时继续在nlevels中获取错误:

library(ggplot2)
hec = data.frame(HairEyeColor)
ggplot(hec,aes(Hair, Freq))+
geom_point(aes(colour = Eye))+
scale_color_manual(values = C("brown" = "chocolate4", "blue" = "blue3", 
"hazel" = "#663", "green" = "darkgreen"))

Any ideas on how I can get the eye colors to change to the identified colors? What am I missing?

关于如何让眼睛颜色改变为识别颜色的任何想法?我错过了什么?

1 个解决方案

#1

This is a syntax error is caused by you miss-typing the value vector with a capital C. Should be: values = c()

这是一个语法错误,是由于您错误地输入了带有大写字母C的值向量。应该是:values = c()

I have corrected it below:

我在下面更正了它:

library(ggplot2)
hec = data.frame(HairEyeColor)
ggplot(hec,aes(Hair, Freq))+
geom_point(aes(colour = Eye))+
scale_color_manual(values = c("brown" = "chocolate4", "blue"= "blue3", "hazel" = "#663", "green" = "darkgreen"))

#1