# Documentation

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# `Graph`::`plotBipartiteGraph`

Plots a Graph in a bipartite layout

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## Syntax

```Graph::plotBipartiteGraph(`G`, <`PointSize = n`>, <`SpecialVertices = [v1, …,vn]`>, <`SpecialEdges = [e1, …,en]`>, <`EdgeColor = RGB`>, <`SpecialEdgeColor = RGB`>, <`SpecialVertexColor = RGB`>, <`Vertex1Color = RGB`>, <`Vertex2Color = RGB`>)
```

## Description

`Graph::plotBipartiteGraph(G)` returns a `plot::Group2d` object in which the vertices are ordered in two rows (from bottom to top). The first vertex in the left row is drawn in blue and the second (the first vertex in the right row) in green. All other vertices are drawn in red. The width of the points is predefined with 40.

## Examples

### Example 1

A random graph is created and plotted (your output may differ due to random creation):

```G1 := Graph::createRandomGraph(110, 10, Undirected): plot(Graph::plotBipartiteGraph(G1)):```

### Example 2

If some edges are to be emphasized they can be drawn in a special color:

```G2 := Graph([1, 2, 3, 4, 5, 6], [[1, 2], [2, 3], [3, 4], [4, 5], [1, 6]]): Graph::bipartite(G2, Lists)```

```edges := [[6, 1], [1, 2]]: plot(Graph::plotBipartiteGraph(G2, SpecialEdges = edges, SpecialEdgeColor = RGB::Blue))```

## Parameters

 `G` `Graph` `n` `a positive integer` `[v1, …,vn]` `a list of vertices` `[e1, …,en]` `a list of edges`

## Options

 `PointSize` Defines the thickness in which the points are drawn. Default is 40. `SpecialVertices` Defines a set of vertices. This option makes only sense if used with the option `SpecialVertexColor`. `SpecialEdges` Defines a set of edges. This option makes only sense if used with the option `SpecialEdgeColor`. `EdgeColor` Defines a color with which to draw the edges. Default is ```RGB ::Red```. `SpecialEdgeColor` Defines a color to be used to draw the set of edges specified. This option makes only sense if used with the option `SpecialEdges`. `VertexColor` Defines a color with which to draw the vertices. If this option is specified, the first two vertices are set to this color, too. They can be given different colors via `Vertex1Color` and `Vertex2Color`. Default is `RGB::Red`. `SpecialVertexColor` Defines a color to be used to draw the set of vertices specified. This option makes only sense if used with the option `SpecialVertices`. `Vertex1Color` Defines a color with which to draw the first vertex with (the starting vertex at the bottom of the first set). Default is `RGB::Blue`. `Vertex2Color` Defines a color with which to draw the second vertex with (the starting vertex at the bottom of the second set). Default is `RGB::Green`.

## Return Values

`plot::Group2d`

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