treemap
安装
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install.packages("treemap")
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读取数据
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contig_length <- read.table("genome_length.txt", header = FALSE, sep = '\t')
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画图
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treemap(contig_length, index = "V1", vSize = "V2", palette = "Reds", title = "Contig length of xxx genome")
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指定每格的颜色与边框宽度
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#添加一列作为颜色列,为每一行指定颜色
OS_contig_length$V3 <- rep("#ffffff", 23)
#指定type为color,不显示index
treemap(OS_contig_length, index = "V1", vSize = "V2", vColor = "V3", type = "color", border.lwds = 1, title = "Contig length of XXX genome", fontsize.labels = 0)
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treemapify
使用treemap绘图产生的图形不是ggplot对象,而trrmapify
则解决了这一问题。
安装
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install.packages("treemapify")
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使用
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library(ggplot2)
library(treemapify)
#使用treemapify自带的示例数据G20
ggplot(data = G20,
aes(area = gdp_mil_usd) # 输入的映射中,只有area为必须
) +
geom_treemap()
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调整
默认的输出为黑色背景,这一点可以手动赋值给fill
映射修改
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ggplot(G20, aes(area = gdp_mil_usd)) +
geom_treemap(fill="white")
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还可以向fill
映射另一个变量
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ggplot(G20, aes(area = gdp_mil_usd, fill = hdi)) +
geom_treemap() +
scale_fill_distiller(palette="Greens") #使用内置的配色方案
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使用geom_treemap_text
添加标签,不支出ggplot通用的geom_text()
函数
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ggplot(G20, aes(area = gdp_mil_usd, fill = hdi, label = country)) +
geom_treemap() +
geom_treemap_text(fontface = "italic", colour = "red", place = "centre",grow = TRUE,alpha=.6)+
scale_fill_distiller(palette="Greens")
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参考来源
https://www.r-bloggers.com/simple-steps-to-create-treemap-in-r/
https://rdrr.io/cran/treemap/man/treemap.html
https://rpubs.com/brandonkopp/creating-a-treemap-in-r
https://cran.r-project.org/web/packages/treemap/treemap.pdf
https://github.com/wilkox/treemapify
https://zhuanlan.zhihu.com/p/29834340