R语言venn图代码
时间: 2024-03-31 09:27:30 浏览: 115
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R语言绘制SCI科研venn图源代码.zip
R语言中可以使用VennDiagram包来绘制venn图。下面是一个示例代码:
```R
# 安装和加载VennDiagram包
install.packages("VennDiagram")
library(VennDiagram)
# 创建一个包含3个组的数据集
group1 <- c("A", "B", "C", "D")
group2 <- c("C", "D", "E")
group3 <- c("D", "E", "F")
# 绘制venn图
venn.plot <- venn.diagram(
x = list(Group1 = group1, Group2 = group2, Group3 = group3),
filename = NULL,
col = "transparent",
fill = c("cornflowerblue", "green", "yellow"),
alpha = 0.5,
label.col = c("darkblue", "darkgreen", "orange"),
cex = 2,
fontface = "bold",
cat.col = c("darkblue", "darkgreen", "orange"),
cat.cex = 1.5,
cat.fontface = "bold",
margin = 0.05
)
# 将venn图保存为PNG文件
png(filename = "venn.png", width = 800, height = 600)
grid.draw(venn.plot)
dev.off()
```
这段代码会创建一个包含3个组的venn图,并将图保存为名为"venn.png"的PNG文件。
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