如何为corrplot构建的相关性热图中添加显著性值
时间: 2023-10-23 15:12:48 浏览: 172
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要为corrplot构建的相关性热图中添加显著性值,可以使用“ggcorrplot”包。该包提供了一种简单的方法来创建带有显著性值的相关性热图。
以下是添加显著性值的步骤:
1. 安装ggcorrplot包
```
install.packages("ggcorrplot")
library(ggcorrplot)
```
2. 准备数据
```
data(mtcars)
```
3. 计算相关性矩阵
```
corr <- cor(mtcars)
```
4. 创建相关性热图
```
ggcorrplot(corr,
type = "upper",
hc.order = TRUE,
ggtheme = ggplot2::theme_gray,
colors = c("#6D9EC1", "white", "#E46726"),
lab = TRUE,
lab_size = 3.5,
method = "circle",
title = "Correlation Matrix")
```
5. 在相关性热图中添加显著性值
```
ggcorrplot(corr,
type = "upper",
hc.order = TRUE,
ggtheme = ggplot2::theme_gray,
colors = c("#6D9EC1", "white", "#E46726"),
lab = TRUE,
lab_size = 3.5,
method = "circle",
title = "Correlation Matrix") +
stat_cor(method = "pearson", label.x = 0.5, label.y = 0.5, label.sep = "\n",
aes(color = ..p.., size = ..p..), cor.prob = TRUE, p.adjust.method = "holm")
```
这将在相关性热图中添加显著性值。在此示例中,使用了“pearson”方法来计算相关性和显著性值。显著性值用颜色和大小编码,并使用“holm”方法进行多重比较校正。
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