我是R的新手,在使用 ggplot2
时遇到了一些问题 .
这是我的数据(较大数据集的子集)的示例:
df <-
structure(list(logpvalue = c(22.36, 6.93, 16.78, 1.78, 17.75,
20.99, 21.03, 9.19, 15.01, 22.25, 13.4, 6.47, 1.34, 13.4, 3.21,
0.37, 0.5, 0.12, 1.8, 0.71, 1.15, 6.73, 0.12, 6.97, 0.64, 9.85,
1.45, 1.67, 2.6, 1.8, 1.35, 4.69, 0.37, 1.91, 0.31, 0, 2.45,
1.68, 2.31, 1.35, 6.48, 4.68), SNP = structure(c(1L, 7L, 6L,
5L, 11L, 1L, 9L, 5L, 8L, 11L, 7L, 5L, 8L, 11L, 1L, 7L, 1L, 4L,
2L, 3L, 10L, 7L, 1L, 4L, 2L, 3L, 10L, 4L, 2L, 3L, 10L, 4L, 2L,
3L, 10L, 4L, 2L, 3L, 7L, 9L, 5L, 1L), .Label = c("rs10244", "rs10891244",
"rs10891245", "rs11213821", "rs12296076", "rs138567267", "rs45615536",
"rs6589218", "rs7103178", "rs7127721", "rs7944895"), class = "factor"),
X173 = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,
2L, 2L), .Label = c("het", "hom"), class = "factor")), .Names = c("logpvalue",
"SNP", "X173"), class = "data.frame", row.names = c(NA, -42L))
我想在y轴上绘制 logpvalue
的箱线图,在x轴上绘制SNP,但每个SNP也根据患者是 het
还是 hom
来分类 X173
. 所以根据这些数据,我想象我的箱子图上有4个盒子 .
如果可能的话,我还想将各个数据点(dotplot-boxplot overlay)与抖动结合起来 .
这是我用于logpavlue与SNP的boxplot的常用代码:
qplot(logpvalue, SNP, data = mydata, geom="boxplot")
+ geom_jitter(position=position_jitter(w=0.1, h=0.1)) + theme_bw()
如何在此代码中添加额外的x变量?
1 回答
试试这个:
或使用
ggolot2
: