如何重疊PCA圖中的不同資訊？

我試圖繪制代表兩種類別的修改后的 PCA 圖。
例如，我想用 1) 基于王國的 PCA 橢圓，2) 用類變數著色的 PCA 樣本點繪制 PCA。
這是示例資料集。

require(ggplot2)
require(ggfortify)

set.seed(1)
df <- structure(list(Sample = c("cat", "dog", "rabbit", "chicken", "duck", "butterfly", "ladybug", "rose", "lily", "iris", "maple tree", "pinetree", "ginkgo"), 
                     Class = c("mammalia", "mammalia", "mammalia", "bird", "bird", "insect", "insect", "flower", "flower", "flower", "tree", "tree", "tree"), 
                     Kingdom = c("animalia", "animalia", "animalia", "animalia", "animalia", "animalia", "animalia", "plantae", "plantae", "plantae", "plantae", "plantae", "plantae")), 
                class = "data.frame", row.names = c(NA, -13L))
rownames(df)<-df[,1]
df[,1]<-NULL

for(i in 3:20){
  df[,i]<-sample(100, size=nrow(df), replace=TRUE)
}
df[,c(3:20)]<-log(df[,c(3:20)] 1, base=2)

df #I ommitted the value from v13 to v20 for simplicity
              Class  Kingdom       V3       V4       V5       V6       V7       V8       V9      V10      V11      V12
cat        mammalia animalia 6.108524 5.781360 5.087463 5.357552 4.247928 5.614710 5.000000 5.129283 5.321928 6.303781
dog        mammalia animalia 5.321928 6.228819 6.409391 5.491853 4.523562 6.491853 4.169925 3.459432 4.643856 4.523562
rabbit     mammalia animalia 1.000000 3.000000 5.169925 4.700440 6.303781 4.584963 6.209453 1.000000 5.754888 6.149747
chicken        bird animalia 5.129283 6.209453 6.149747 6.149747 6.044394 6.409391 6.459432 5.459432 6.539159 4.857981
duck           bird animalia 6.459432 6.321928 6.228819 5.321928 6.149747 4.906891 6.392317 5.906891 6.442943 5.247928
butterfly    insect animalia 5.459432 6.426265 5.426265 5.700440 6.459432 3.807355 6.507795 4.754888 5.357552 5.954196
ladybug      insect animalia 3.906891 5.247928 5.285402 5.426265 6.149747 4.523562 5.614710 4.000000 6.614710 5.554589
rose         flower  plantae 6.375039 6.491853 4.392317 2.807355 6.247928 6.554589 6.022368 5.882643 6.392317 6.087463
lily         flower  plantae 5.906891 5.247928 4.857981 4.643856 6.357552 4.857981 6.569856 4.906891 6.507795 6.442943
iris         flower  plantae 5.700440 5.129283 4.392317 5.044394 6.658211 5.614710 6.599913 4.643856 5.169925 6.643856
maple tree     tree  plantae 6.614710 6.491853 5.491853 3.906891 3.807355 5.087463 5.930737 5.426265 5.459432 6.169925
pinetree       tree  plantae 6.426265 5.491853 6.459432 1.584963 5.357552 5.523562 5.700440 5.614710 1.000000 6.643856
ginkgo         tree  plantae 4.459432 6.321928 6.149747 5.523562 6.491853 4.459432 6.554589 6.266787 4.906891 5.700440

在指示資料集后，我使用 autoplot 繪制了 PCA 圖

pca_df<-prcomp(df[,-c(1,2)], scale.=TRUE)
autoplot(pca_df)
autoplot(pca_df, data=df, colour='Kingdom', frame.type='norm')

在這個圖中，我想根據 Class 重疊顏色

pca_df<-prcomp(df[,-c(1,2)], scale.=TRUE)
autoplot(pca_df)
autoplot(pca_df, data=df, colour='Class')

總之，我想使用來自 Kingdom 變數的橢圓表示，并使用 Class 變數著色。如何在一個 PCA 圖中組合不同的表示？

額外的試驗
我嘗試使用其他包 (factoextra) 繪制 PCA 圖，但它顯示了相同的結果。

require (factoextra)

fviz_pca_ind(pca_df,
             col.ind=df$Kingdom,
             addEllipses = TRUE,
             col.ind.sup=df$Class,
             repel=TRUE)

uj5u.com熱心網友回復：

您可以frame.colour為橢圓和colour點指定 ：

autoplot(pca_df, data=df, colour='Class', frame.type='norm', frame.colour = "Kingdom")

標籤：r 可视化 个人电脑

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