How to draw a graph as beautiful as in README? about graph

[SilverRainZ]

@dominikbraun Thanks for your detailed answer, it is helpful to me. :D

[dominikbraun]

Hi! You need the attributes colorscheme, color, fillcolor, and if you want, fontname. Additionally, you need the style attribute set to filled.

You can add these attributes using the VertexAttribute option. A graph like in the example could be created as follows (using the Brewer color scheme):

_ = g.AddVertex(1, graph.VertexAttribute("colorscheme", "blues3"), graph.VertexAttribute("style", "filled"), graph.VertexAttribute("color", "2"), graph.VertexAttribute("fillcolor", "1"));
_ = g.AddVertex(2, graph.VertexAttribute("colorscheme", "greens3"), graph.VertexAttribute("style", "filled"), graph.VertexAttribute("color", "2"), graph.VertexAttribute("fillcolor", "1"));
_ = g.AddVertex(3, graph.VertexAttribute("colorscheme", "purples3"), graph.VertexAttribute("style", "filled"), graph.VertexAttribute("color", "2"), graph.VertexAttribute("fillcolor", "1"));
_ = g.AddVertex(4, graph.VertexAttribute("colorscheme", "ylorbr3"), graph.VertexAttribute("style", "filled"), graph.VertexAttribute("color", "2"), graph.VertexAttribute("fillcolor", "1"));
_ = g.AddVertex(5, graph.VertexAttribute("colorscheme", "reds3"), graph.VertexAttribute("style", "filled"), graph.VertexAttribute("color", "2"), graph.VertexAttribute("fillcolor", "1"));

Rendering this will yield the following graph:

To arrange the nodes like in the example, you can use the osage engine for rendering the DOT file - I think this can be done by passing the -Kosage flag to the dot command. The DOT playground yields the following graph:

Now, all you need to do is to add the width and height vertex attributes, and set the fixedheight attribute to true.