## Introduction

This article describes how to create a beautiful **ggplot Venn diagram**. There are multiple extensions of the **ggplot2** R package for creating Venn diagram in R, including the `ggvenn`

and the `ggVennDiagram`

packages.

The two packages enable to create Venn plots with 2 to 4 sets or dimensions. The main difference between the two packages is that the `ggvenn`

package assigns a specific color to each set. The `ggVennDiagram`

package maps the fill color of each region to quantity, allowing us to visually observe the differences between different parts.

You will learn how to create Venn diagrams in R using both `ggvenn`

and `ggVennDiagram`

functions.

Contents:

## Create a demo data

```
set.seed(20190708)
genes <- paste("gene",1:1000,sep="")
x <- list(
A = sample(genes,300),
B = sample(genes,525),
C = sample(genes,440),
D = sample(genes,350)
)
```

## Create Venn diagrams using the ggVennDiagram R package

### Install and load the ggVennDiagram package

Install the latest development version:

```
if (!require(devtools)) install.packages("devtools")
devtools::install_github("gaospecial/ggVennDiagram")
```

Load:

`library("ggVennDiagram")`

### Four dimension Venn plot

```
library("ggVennDiagram")
# Default plot
ggVennDiagram(x)
```

```
# Remove labels background color
ggVennDiagram(x, label_alpha = 0)
```

```
# Change category names
# Change the gradient fill color
ggVennDiagram(
x, label_alpha = 0,
category.names = c("Stage 1","Stage 2","Stage 3", "Stage4")
) +
ggplot2::scale_fill_gradient(low="blue",high = "yellow")
```

### Three dimension Venn plot

`ggVennDiagram(x[1:3], label_alpha = 0)`

### Two dimension Venn plot

`ggVennDiagram(x[1:2], label_alpha = 0)`

## Create Venn diagrams using the ggven R package

### Install and load the ggvenn package

Install the latest development version:

```
if (!require(devtools)) install.packages("devtools")
devtools::install_github("yanlinlin82/ggvenn")
```

Load:

`library("ggvenn")`

### Four dimension Venn plot

Note that, the `ggvenn()`

function assigns a specific color to each set.

```
library("ggvenn")
# Default plot
ggvenn(x)
```

```
# Change category names
# Change the fill color
names(x) <- c("Stage 1","Stage 2","Stage 3", "Stage4")
ggvenn(
x,
fill_color = c("#0073C2FF", "#EFC000FF", "#868686FF", "#CD534CFF"),
stroke_size = 0.5, set_name_size = 4
)
```

### Three dimension Venn plot

```
ggvenn(
x, columns = c("Stage 1", "Stage 2", "Stage 3"),
stroke_size = 0.5
)
```

### Two dimension Venn plot

```
ggvenn(
x, columns = c("Stage 1", "Stage 2"),
stroke_size = 0.5
)
```

## Conclusion

This article describes how to create a ggplot Venn diagram using the `ggvern`

and the `ggVennDiagram`

R packages.

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Version: Français

Hello,

Using ggvenn I wanted to list out items in the shared cells.

Example, Stage1 and 2 share 151 items. How can extract these 151 items and track them in my data frame?

Thanks