将颜色和形状的图例组合为单个图例

我从一个2 x 2的研究设计中创建了一个 ggplot 图，并且想使用2种颜色和2个符号来分类我的4种不同的治疗组合。目前我有2个图例，一个为颜色和一个为两个形状。如何将它们组合成一个图例，从而得到一个蓝色圆圈、一个红色圆圈、一个蓝色三角形和一个读取三角形？

一些数据:

state1 <- c(rep(c(rep("N", 7), rep("Y", 7)), 2))
year <- rep(c(2003:2009), 4)
group1 <- c(rep("C", 14), rep("E", 14))
group2 <- paste(state1, group1, sep = "")
beta <- c(0.16,0.15,0.08,0.08,0.18,0.48,0.14,0.19,0.00,0.00,0.04,0.08,0.27,0.03,0.11,0.12,0.09,0.09,0.10,0.19,0.16,0.00,0.11,0.07,0.08,0.09,0.19,0.10)
lcl <- c(0.13,0.12,0.05,0.05,0.12,0.35,0.06,0.13,0.00,0.00,0.01,0.04,0.20,0.00,0.09,0.09,0.06,0.06,0.07,0.15,0.11,0.00,0.07,0.03,0.05,0.06,0.15,0.06)
ucl <- c(0.20,0.20,0.13,0.14,0.27,0.61,0.28,0.27,0.00,1.00,0.16,0.16,0.36,0.82,0.14,0.15,0.13,0.13,0.15,0.23,0.21,0.00,0.15,0.14,0.12,0.12,0.23,0.16)
data <- data.frame(state1,year,group1,group2,beta,lcl,ucl)

情节:

library(ggplot2)
pd <- position_dodge(.65)
ggplot(data = data, aes(x = year, y = beta, colour = state1, group = group2, shape = group1)) +
geom_point(position = pd, size = 4) +
geom_errorbar(aes(ymin = lcl, ymax = ucl),colour = "black", width = 0.5, position = pd) +
scale_colour_hue(name = "Treatment & State",  #Legend label, use darker colors
labels = c("Control", "Exclosure"),
l = 40) +
scale_shape(name = "State", labels = c("Non-F", "Flwr"))

enter image description here

104113 次浏览
小开

Red circle,blue circle,red triangle, blue triangle as you asked:

ggplot(data =data,aes(x= year, y = beta, shape=group2, colour=group2,group = group2)) +
geom_errorbar(aes(ymin = lcl, ymax = ucl),colour = "black", width = 0.5, position = pd) +
geom_point(position = pd, size = 4) +
scale_colour_manual(values=c("red","blue","red","blue")) +
scale_shape_manual(values=c(19,19,17,17)) +
scale_fill_hue(name="Treatment & State",  #Legend label, use darker colors
labels=c("Control", "Exclosure"),l=40)

enter image description here

小开
最佳答案

You need to use identical name and labels values for both shape and colour scale.

pd <- position_dodge(.65)
ggplot(data = data,aes(x= year, y = beta, colour = group2, shape = group2)) +
geom_point(position = pd, size = 4) +
geom_errorbar(aes(ymin = lcl, ymax = ucl), colour = "black", width = 0.5, position = pd) +
scale_colour_manual(name = "Treatment & State",
labels = c("Control, Non-F", "Control, Flwr", "Exclosure, Non-F", "Exclosure, Flwr"),
values = c("blue", "red", "blue", "red")) +
scale_shape_manual(name = "Treatment & State",
labels = c("Control, Non-F", "Control, Flwr", "Exclosure, Non-F", "Exclosure, Flwr"),
values = c(19, 19, 17, 17))

enter image description here


提交答案