本文介绍了在ggplot2中结合图例的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 我在中有多个 geom_point 和一个 stat_function code>。有没有办法显示一个图例？ df df 我想要一个蓝色线条和两个彩色图形的图例。我试过 scale_colour_discrete（name =legend，breaks = c（a，b，log2（x ）））+ scale_shape_discrete（name =legend，breaks = c（a，b）） 但这不起作用。有没有办法自动或手动做到这一点？ 预先感谢。解决方案可能更简单的方法是使用 override.aes ，如下所示： ggplot（df，aes（x = x，y = value））+ geom_point（aes（color = variable，shape = variable），size = 3）+ stat_function aes（color =log2（x）），fun = log2，size = 1.5）+ guides（shape = FALSE， color = guide_legend（override.aes = list（shape = c（16 ，17，NA）， linetype = c（blank，blank，solid）））） 其结果是： I have a plot of multiple geom_point and a single stat_function in ggplot2. Is there a way to show a single legend?df <- data.frame("x"=c(1:5), "a"=c(1,2,3,3,3), "b"=c(1,1.1,1.3,1.5,1.5))df <- melt(df, "x")p <- ggplot(df, aes(x=x, y=value)) + geom_point(aes(colour=variable, shape=variable)) + stat_function(aes(colour="log2(x)"), fun=log2)I want to have a single legend with the blue line and the two colored shapes. I triedscale_colour_discrete(name="legend", breaks=c("a", "b", "log2(x)")) +scale_shape_discrete(name="legend", breaks=c("a", "b"))but this does not work. Is there a way to do this automatically or by hand?Thanks in advance. 解决方案 Probably an easier alternative is to use override.aes as follows:ggplot(df, aes(x = x, y = value)) + geom_point(aes(colour = variable, shape = variable), size = 3) + stat_function(aes(colour = "log2(x)"), fun = log2, size = 1.5) + guides(shape = FALSE, colour = guide_legend(override.aes = list(shape = c(16, 17, NA), linetype = c("blank", "blank", "solid"))))which results in: 这篇关于在ggplot2中结合图例的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！
