ggplot2 legend and paging parameters

legend:

. 1 Guides (Fill = guide_legend (title = NULL))   # remove the legend title 
2 Guides (Fill = guide_legend (title = NULL, keywidth = 0.5, keyheight = 0.5)) # Legend icon reduced 
. 3 Guides (Fill = guide_legend (title = NULL , keywidth = 0.6, keyheight = 0.5 , label.theme = element_text (size =. 5)))   # reduced legend text and icons 
. 5  
. 6 Guides (Fill = FALSE)   # remove the legend 
. 7 Theme (legend.position = " none " )    # Legend removed 
. 8 scale_fill_discrete (Guide = FALSE)   # removed Legend

Paging:

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