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我有这样的情节:多个图例设置图例项圈颜色
dates = c("2017-03-13","2017-03-13","2017-03-14","2017-03-14","2017-03-14")
value = c(5,6,7,8,9)
group = c("A","B","A","B","C")
size = c(10,20,30,40,50)
data =data.frame(dates= dates, value = value, group = group, size = size)
ggplot(data, aes(x = dates, y = value, group = group)) + geom_point(aes (color = as.factor(group), size= size))+
scale_color_manual(name="group",
labels = c(A="A",B= "B",C = "C"),
values = c(A="green",B="red" , C = "orange")
) + theme(
panel.background = element_rect(fill = "black", colour = "black"),
legend.key = element_rect(colour = "black", fill = "black")
)
有2个问题:
(1)目前在大小传说中的圆是黑色,背景是黑色的。如何使圆圈的颜色变为红色,以便您可以在黑色背景上看到圆圈?
有三种人。那些可以数数的人和那些不能数的人。 – G5W