Question

在下面的示例中，treemap自动为“employees”生成8个类别。我怎么能改变它，即4类？我还可以设置类别的范围吗？感谢

library(treemap)

data(business)

treemap(business,
        index=c("NACE1", "NACE2"),
        vSize="employees",
        vColor="employees",
        title.legend="number of employees",
        type="value")

Answer 1

感谢您的提问。（但是？）可能无法更改定量树图的类别数。但是，您可以创建分类树图：

library(treemap)
data(business)
business <- transform(business, empCat = cut(employees, breaks = c(0, 3000, 6000, 9000, 
    14000), include.lowest = TRUE, right=FALSE))

treemap(business,
    index=c("NACE1", "NACE2"),
    vSize="employees",
    vColor="empCat",
    type="categorical", 
    palette="Greens",
    title.legend="number of employees",
    position.legend = "bottom")

如何控制树形图包中的类别数？

1 个答案: