[英]Plot box plot of variables grouping by a categorical variable
我想 plot 所有變量的 hist 和 box plot 按cluster
變量分組:
results <- kmeans(mtcars, 5)
mtcars$cluster <- results$cluster
mtcars
mpg cyl disp hp drat wt qsec vs am gear carb cluster PC1 PC2
Mazda RX4 21.0 6 160.0 110 3.90 2.620 16.46 0 1 4 4 4 -79.589373 2.103380
Mazda RX4 Wag 21.0 6 160.0 110 3.90 2.875 17.02 0 1 4 4 4 -79.591518 2.118623
Datsun 710 22.8 4 108.0 93 3.85 2.320 18.61 1 1 4 1 5 -133.900768 -5.039705
Hornet 4 Drive 21.4 6 258.0 110 3.08 3.215 19.44 1 0 3 1 1 8.517503 44.975306
Hornet Sportabout 18.7 8 360.0 175 3.15 3.440 17.02 0 0 3 2 1 128.685998 30.819637
Valiant 18.1 6 225.0 105 2.76 3.460 20.22 1 0 3 1 4 -23.213968 35.077917
Duster 360 14.3 8 360.0 245 3.21 3.570 15.84 0 0 3 4 3 159.318358 -32.279040
Merc 240D 24.4 4 146.7 62 3.69 3.190 20.00 1 0 4 2 5 -112.623027 39.715619
Merc 230 22.8 4 140.8 95 3.92 3.150 22.90 1 0 4 2 4 -103.527300 7.481407
Merc 280 19.2 6 167.6 123 3.92 3.440 18.30 1 0 4 4 4 -67.039911 -6.235141
Merc 280C 17.8 6 167.6 123 3.92 3.440 18.90 1 0 4 4 4 -66.990549 -6.233014
Merc 450SE 16.4 8 275.8 180 3.07 4.070 17.40 0 0 3 3 1 55.212458 -10.371970
Merc 450SL 17.3 8 275.8 180 3.07 3.730 17.60 0 0 3 3 1 55.174696 -10.360343
Merc 450SLC 15.2 8 275.8 180 3.07 3.780 18.00 0 0 3 3 1 55.252387 -10.369412
Cadillac Fleetwood 10.4 8 472.0 205 2.93 5.250 17.98 0 0 3 4 2 242.808289 52.527661
Lincoln Continental 10.4 8 460.0 215 3.00 5.424 17.82 0 0 3 4 2 236.363453 38.308137
Chrysler Imperial 14.7 8 440.0 230 3.23 5.345 17.42 0 0 3 4 2 224.731795 16.141478
Fiat 128 32.4 4 78.7 66 4.08 2.200 19.47 1 1 4 1 5 -172.369965 6.588509
Honda Civic 30.4 4 75.7 52 4.93 1.615 18.52 1 1 4 2 5 -181.073197 17.794233
Toyota Corolla 33.9 4 71.1 65 4.22 1.835 19.90 1 1 4 1 5 -179.704063 4.200915
Toyota Corona 21.5 4 120.1 97 3.70 2.465 20.01 1 0 3 1 5 -121.230928 -3.326647
Dodge Challenger 15.5 8 318.0 150 2.76 3.520 16.87 0 0 3 2 1 80.159574 34.980520
AMC Javelin 15.2 8 304.0 150 3.15 3.435 17.30 0 0 3 2 1 67.572806 28.891119
Camaro Z28 13.3 8 350.0 245 3.73 3.840 15.41 0 0 3 4 3 150.364099 -36.653607
Pontiac Firebird 19.2 8 400.0 175 3.08 3.845 17.05 0 0 3 2 2 164.646844 48.259647
Fiat X1-9 27.3 4 79.0 66 4.08 1.935 18.90 1 1 4 1 5 -171.903546 6.656677
Porsche 914-2 26.0 4 120.3 91 4.43 2.140 16.70 0 1 5 2 5 -123.811826 2.051162
Lotus Europa 30.4 4 95.1 113 3.77 1.513 16.90 1 1 5 2 5 -137.089266 -28.654587
Ford Pantera L 15.8 8 351.0 264 4.22 3.170 14.50 0 1 5 4 3 159.422698 -53.335167
Ferrari Dino 19.7 6 145.0 175 3.62 2.770 15.50 0 1 5 6 4 -64.755070 -62.972640
Maserati Bora 15.0 8 301.0 335 3.54 3.570 14.60 0 1 5 8 3 145.371926 -139.055094
Volvo 142E 21.4 4 121.0 109 4.11 2.780 18.60 1 1 4 2 5 -115.188610 -13.805581
現在我想要一個兩個不同圖中的所有變量的hist
和BoxPlot
相應地。 例如, hist
1、集群 2 中Mazda Rx
4 的歷史,集群 1 中Mazda Rx4 Wag
hist
歷史,集群 2 集群 3,...
誰能幫我解決這個問題。 我怎么能在ggplot
中做到這一點?
嘗試分面並將數據重塑為更長的直方圖:
library(ggplot2)
library(tidyverse)
#Code
results <- kmeans(mtcars, 5)
mtcars$cluster <- results$cluster
#Plot
mtcars %>% pivot_longer(cols = -cluster) %>%
ggplot(aes(x=value,fill=name))+
geom_histogram()+
facet_grid(cluster~name,scales = 'free',switch = "y")+
theme_bw()+
theme(panel.grid = element_blank(),
axis.text = element_text(face='bold',color='black'),
axis.title = element_text(face='bold',color='black'),
strip.text = element_text(face='bold',color='black'),
legend.text = element_text(face='bold',color='black'),
legend.title = element_text(face='bold',color='black'),
strip.background = element_blank())
Output:
對於箱線圖,我不確定您希望 x 軸上的每輛車如何,因為它會在 x 軸上造成混亂,因此我將為箱線圖添加代碼,並在最后一部分為您考慮使用的代碼x軸的汽車:
#Boxplots
mtcars %>% mutate(id='Var') %>%pivot_longer(cols = -c(id,cluster)) %>%
ggplot(aes(x=id,y=value,fill=name))+
geom_boxplot()+
facet_grid(cluster~name,scales = 'free',switch = "y")+
theme_bw()+
theme(panel.grid = element_blank(),
axis.text = element_text(angle=90,face='bold',color='black'),
axis.title = element_text(face='bold',color='black'),
strip.text = element_text(face='bold',color='black'),
legend.text = element_text(face='bold',color='black'),
legend.title = element_text(face='bold',color='black'),
strip.background = element_blank())
Output:
以及在 x 軸上使用汽車的代碼:
#Boxplots 2
mtcars %>% mutate(id=rownames(mtcars)) %>%pivot_longer(cols = -c(id,cluster)) %>%
ggplot(aes(x=id,y=value,fill=name))+
geom_boxplot()+
facet_grid(cluster~name,scales = 'free',switch = "y")+
theme_bw()+
theme(panel.grid = element_blank(),
axis.text = element_text(angle=90,face='bold',color='black'),
axis.title = element_text(face='bold',color='black'),
strip.text = element_text(face='bold',color='black'),
legend.text = element_text(face='bold',color='black'),
legend.title = element_text(face='bold',color='black'),
strip.background = element_blank())
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