ggplot2 图例及分页参数

图例：

1 guides(fill = guide_legend(title = NULL))  # 去掉图例title
2 guides(fill = guide_legend(title = NULL,keywidth = 0.5,keyheight = 0.5)) #图例图标缩小
3 guides(fill=guide_legend(title = NULL,keywidth=0.6,keyheight=0.5,label.theme = element_text(size=5)))  #缩小图例文字及图标
5 
6 guides(fill=FALSE)  # 去掉图例
7 theme(legend.position="none")   # 去掉图例
8 scale_fill_discrete(guide=FALSE)  # 去掉图例

分页：

1 facet_grid(class~.,scales = "free",space = "free")
2 facet_wrap(~class,scales = "free",nrow=2)
3 
4 strip.background=element_blank() #分页背景去除