使用ggplot2的线性判别分析图 [英] Linear discriminant analysis plot using ggplot2
问题描述
如何使用ggplot2将样本ID(行号)作为标签添加到此LDA图中的每个点?
谢谢
脚本:
require(MASS)
require(ggplot2)
data (虹膜)
irisLda <-lda(iris [, - 5],iris [,5])
irisLda < - lda数据=虹膜)
plot(irisLda)
irisProjection < - cbind(scale(as.matrix(iris [, - 5]),scale = FALSE)%*%irisLda $ scaling,iris (数据= irisProjection,aes(x = LD1,y = LD2,col =物种))
p + geom_point()
<= ggplot / code>
您只需使用 也许你需要用 How can I add the sample ID (row number) as labels to each point in this LDA plot using ggplot2? Thanks Script:
You simply need to use Maybe you need to play around a bit with 这篇关于使用ggplot2的线性判别分析图的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋! geom_text $ c
$ p $ irisProjection $ row_num = 1:nrow(irisProjection)
p < - ggplot(data = irisProjection ,aes(x = LD1,y = LD2,col = Species))+
geom_point()+ geom_text(aes(label = row_num))
print(p)
hjust
和 vjust
,它们是 geom_text
的一部分。您还可以查看直接标签
智能标签放置的包装。
require(MASS)
require(ggplot2)
data(iris)
irisLda <- lda(iris[,-5],iris[,5])
irisLda <- lda(Species~.,data=iris)
plot(irisLda)
irisProjection <- cbind(scale(as.matrix(iris[,-5]),scale=FALSE) %*% irisLda$scaling,iris[,5,drop=FALSE])
p <- ggplot(data=irisProjection,aes(x=LD1,y=LD2,col=Species))
p + geom_point()
geom_text
:irisProjection$row_num = 1:nrow(irisProjection)
p <- ggplot(data=irisProjection, aes(x=LD1,y=LD2,col=Species)) +
geom_point() + geom_text(aes(label = row_num))
print(p)
hjust
and vjust
, which are part of geom_text
. You also might want to have a look at the directlabels
package for smart label placement.