library(RColorBrewer) display.brewer.all() #显示所有可用颜色
显示其中一组颜色中的7种颜色
brewer.pal(7,"YlOrRd") [1] "#FFFFB2" "#FED976" "#FEB24C" "#FD8D3C" [5] "#FC4E2A" "#E31A1C" "#B10026" display.brewer.pal(7,"YlOrRd")
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