ggplot(augmented_m, aes(x = .fitted, y = .resid)) +
geom_point()
使用先前方法中的线性模型m,我们可以创建一个简单的残差图:
library(broom)
augmented_m <- augment(m)
ggplot(augmented_m, aes(x = .fitted, y = .resid)) +
geom_point()
输出如图11-5 所示。
.fitted
.resid
30
20
10
0
-
10
-
20
-
1001002000
图11-5:模型残差图
你还可以使用基础R的plot方法快速查看,但它将生成基础R图形输出,而不是
ggplot图形:
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