`geom_col()`函数用于创建柱状图,它是ggplot2包中用于构建可视化图形的一个图层函数。下面是`geom_col()`函数的一般用法和常见参数: ```R geom_col(mapping = NULL, data = NULL, stat = "identity", position = "stack", ..., width = NULL, na.rm = FALSE, show.legend = NA, inherit.aes = ...
1.geom_abline和geom_hline ggplot(mtcars)+geom_point(aes(mpg,disp,colour=gear))+theme_bw()+geom_hline(yintercept=c(300,400),colour='red',linetype=2,size=2)+geom_vline(xintercept=c(20,25),colour='blue',linetype=3,size=3) image.png 2.geom_bar和geom_col 2.1 count or weight 数...