r - 将特定颜色分配给 ggplot2 中的特定值
问题描述
我在 ggplot2 中有一个相当简单的问题,我无法解决。
我有以下数据框:
date country party value
<dbl> <chr> <chr> <dbl>
2019 UK Conservatives 15
2019 UK Labour 16
2019 UK Lib Dem 12
2019 UK Greens 31
2020 UK Conservatives 13
2020 UK Labour 14
2020 UK Lib Dem 12
2020 UK Greens 32
我想绘制但将特定颜色分配给party
. 我试过这样:
p <- df%>%
ggplot( aes(x=as.factor(date), y=value, fill=party)) +
geom_bar(stat="identity", position=position_dodge())+
geom_text(aes(label=value), vjust=1.6, color="white",
position = position_dodge(0.9), size=3.5)+
theme_minimal()
接着:
p + scale_colour_manual(values = c("Conservatives" = "cyan",
"Greens" = "chartreuse3",
"Labour" = "brown3",
"Lib Dems" = "darkgoldenrod1")) #these are the colours I want to assign each level of `party`.
但是正如您所看到的,我并没有实际打印出我选择的颜色,而是得到了与刚刚调用p
.
知道为什么吗?谢谢!
解决方案
尝试scale_fill_manual
代替scale_colour_manual
:
p + scale_fill_manual(values = c("cyan", "chartreuse3", "brown3", "darkgoldenrod1"))
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