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我试图修改在this post中创建的绘图中的构面标签。将标签添加到facet_wrap boxplot
要重复码:
library(ggplot2)
mymatrix1 <- matrix(data = 0, nrow = 105, ncol =2)
mymatrix2 <- matrix(data = 0, nrow = 108, ncol =2)
mymatrix3 <- matrix(data = 0, nrow = 112, ncol =2)
mymatrix1[,1] <- sample(0:1, 105, replace= TRUE)
mymatrix1[,2] <- rnorm(105, 52, 2)
mymatrix2[,1] <- sample(0:1, 108, replace= TRUE)
mymatrix2[,2] <- rnorm(108, 60, 2)
mymatrix3[,1] <- sample(0:1, 112, replace= TRUE)
mymatrix3[,2] <- rnorm(112, 70, 2)
mydata <- list(mymatrix1, mymatrix2,mymatrix3)
for(i in 1:3){
mydata[[i]] <- cbind(mydata[[i]], i)
colnames(mydata[[i]]) <- c("class", "readcount", "group")
}
mydata <- as.data.frame(do.call(rbind, mydata))
## fixed scales
p <- qplot(class, readcount, data = mydata, geom="boxplot", fill = factor(class)) +
geom_jitter(position=position_jitter(w=0.1,h=0.1)) +
scale_x_continuous(breaks=c(0,1), labels=c("0", "1")) +
facet_wrap(~ group)
## free scales
p + facet_wrap(~ group, scales = "free")
我的目标,在这个情节,是改变小标签1,2和3,像“一”,“B”或“C”。 我认为,简单地改变数据帧列“组”,以字母代替数字在for循环:
for(i in 1:3){
mydata[[i]] <- cbind(mydata[[i]], letters[i])
colnames(mydata[[i]]) <- c("class", "readcount", "group")
}
会的工作,但我得到这个错误:
Error: Discrete value supplied to continuous scale
。
有什么建议吗?我查看了其他帖子以更改小平面标签,但它们似乎不适用于此类情节(至少对我而言)。
非常感谢。
http://www.cookbook-r.com/Graphs/Facets_(ggplot2)/ – amzu 2014-10-30 20:43:51