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VennDiagram是进行Venn图绘制的 R包，最多能够绘制五组数据，其中一个主要的绘图函数为venn.diagram()
针对该参数相关的参数调整，可以直接对Venn图的颜色字体等多主题进行修改。而其绘图数据，也就是venn.diagram() 对应的数据是一个list向量，
数据的读取和整理可以参考：
R语言绘制维恩图空值NA处理：https://www.亿速云.com/article/259 数据读取方式，
1、譬如经相似读取数据和处理之后，获取一个向量xList，数据基本情况如下：
summary(xList) Length Class Mode AT_4000 4000 -none- character AT_3892 3892 -none- character AT_3593 3593 -none- character AT_3000 3000 -none- character AT_2987 2987 -none- character
一共五组数据，各组数据如上所示，venn.diagram()绘图：
venn.plot =venn.diagram(xList,filename = NULL) grid.newpage() grid.draw(venn.plot)
之后基于相关代码调整即可。
2 如何获取各区域信息是绘制Venn图的一个关键问题
可以基于VennDiagram提供的计算函数 calculate.overlap 或者get.venn.partitions
以前者为例：
area=calculate.overlap(xList) > typeof(area) [1] "list" > summary(area) Length Class Mode a31 220 -none- character a30 286 -none- character a29 285 -none- character a28 175 -none- character a27 178 -none- character a26 149 -none- character a25 136 -none- character a24 206 -none- character a23 232 -none- character a22 356 -none- character a21 217 -none- character a20 284 -none- character a19 255 -none- character a18 147 -none- character a17 204 -none- character a16 131 -none- character a15 123 -none- character a14 213 -none- character a13 187 -none- character a12 300 -none- character a11 278 -none- character a10 216 -none- character a9 392 -none- character a8 209 -none- character a7 204 -none- character a6 153 -none- character a5 165 -none- character a4 153 -none- character a3 211 -none- character a2 224 -none- character a1 273 -none- character
如上结果显示 五组一共获得31各区域的数据，可以利用返回的list提取每一个区域的结果，譬如取出a1区域（共273）的前10个：
> area$a1[1:10] [1] "AT3G27960" "AT4G12170" "AT1G58270" "AT3G55290" "AT1G27360" "AT2G02790" "AT1G42990" "AT3G25011" [9] "AT2G24617" "AT5G55910"
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