ggplot2分组时默认使用的颜色,可以从另一个hadley写的包,scales包中调用。这个包算是一个工具包,用于和hadley写的其他包配合使用,颜色是其中一部分。
library(scales) show_col(hue_pal()(3)) # show_col(hue_pal(h = c(0, 360) + 15, c = 100, l = 65)(3)) # 和上面一样,默认设置
hue_pal函数的默认设置,其中h是色相,范围越大,相邻颜色之间差异越大;c是饱和度,值越大色彩越浓艳饱满;l是亮度,大亮小暗。
柱状图的颜色搭配:
colorbar <- function(values){ groupbar + scale_fill_manual(values = values) } colorlist <- list(c("#8FBC94","#548687"),c("#4FB0C6","#4F86C6"), c("#C65146","#EC6A5C"),c("#6E7783","#77AAAD"), c("#e97f02","#f8ca00"),c("#3a5134","#4f953b"), c("#99CCCC","#FFCC99"),c("#CC9999","#CCCC99"), c("#0099CC","#FF6666"),c("#339966","#996699"), c("#CC9966","#666666"),c("#336666","#CCCC33"), brewer.pal(7, "Set1")[c(1,2)],brewer.pal(7, "Set1")[c(3,4)], brewer.pal(7, "Set2")[c(5,6)],brewer.pal(7, "Set3")[c(6,7)], brewer.pal(7, "Greens")[c(4,5)],brewer.pal(7, "Blues")[c(4,5)], brewer.pal(7, "Oranges")[c(4,5)],brewer.pal(7, "Purples")[c(4,5)] ) p <- marrangeGrob(lapply(colorlist, colorbar), nrow=0.5*length(colorlist), ncol=2, top="") p
另外两个比较常用的颜色设置:
- scale_fill_manual(): 填充色
- scale_color_manual():轮廓色,如点线
来自于https://zhuanlan.zhihu.com/p/32746407