我是第一次构建树状图,并且在标签顶部绘制了簇周围的矩形。你知道如何修改这些标签的位置以避免这种重叠吗?
在这里你可以找到我的代码的一个工作示例:
mydata <- c(9.45, 10.54, 10.36, 10.46, 10.78, 10.1, 11.13)
mydata.matrix <- matrix(mydata, nrow = 1, ncol = 7)
colnames(mydata.matrix) <- c("a", "b", "c", "d", "e", "f", "g")
rownames(mydata.matrix) <- c("X")
d <- dist(mydata.matrix["X", ], method = "euclidean")
fit <- hclust(d, method="ward.D")
nodePar <- list(lab.cex = 0.6, pch = c(NA, 19), cex = 0.7, col = "blue")
plot(as.dendrogram(fit), xlab = "", sub="", ylab = "Euclidean distance",
main = "Dendrogram", nodePar = nodePar)
rect.hclust(fit, k=2, border="red")
以下是上述代码中的情节:
特别是我希望红色矩形完全包含树状图叶子的标签。
谢谢!
答案 0 :(得分:2)
您应该使用dendextend package.
中的rect.dendrogram
功能
例如:
mydata <- c(9.45, 10.54, 10.36, 10.46, 10.78, 10.1, 11.13)
mydata.matrix <- matrix(mydata, nrow = 1, ncol = 7)
colnames(mydata.matrix) <- c("a", "b", "c", "d", "e", "f", "g")
rownames(mydata.matrix) <- c("X")
d <- dist(mydata.matrix["X", ], method = "euclidean")
fit <- hclust(d, method="ward.D")
nodePar <- list(lab.cex = 0.6, pch = c(NA, 19), cex = 0.7, col = "blue")
dend <- as.dendrogram(fit)
plot(dend, xlab = "", sub="", ylab = "Euclidean distance",
main = "Dendrogram", nodePar = nodePar)
library(dendextend)
rect.dendrogram(dend , k=2, border="red")
一般情况下,对于绘制树形图,您可能会发现以下quick introduction对dendextend很有用(或查看more lengthy version)。