Fastest way to create a ‘network of connected dots’ graphic?

I’m looking to create several images of this type:

Network of connected nodes

As you can see, there are a lot of lines and dots. Obviously, this can be drawn manually. But what is the fastest way to generate this sort of graphic?

Note the key features of the graphic: the lines form a web/graph, with each node having many connections; and there are dots at every intersection.

Speed is important as I may need to create many of these, each different; or large-dimension versions; or versions which are denser or sparser. Ideally I need a vector output for onward editability.

You can find a lot of flattened images of this type on stock websites (each with their own style that may be inappropriate for the given project, hence I want to be able to make them). I’d be amazed if these are being hand-drawn, but maybe they are?

Answer

Delaunay triangulation is already suggested in a comment, but here’s a simple receipe. It uses freeware which will not cause licensing problems.

Get Inkscape, draw dots, select them and apply extension Generate from Path > Voronoi Diagram > Delaunay Triangulation.

A fast way to insert plenty of dots is to use the shape sprayer.

Here’s 2 examples:

enter image description here

The upper set is sprayed, the lower set has a few separately drawn shapes.

The dots stay individual objects, the generated pattern is a group, which contains triangles with overlapping edges.

You can save the SVG file and open it in Illustrator. There you can make colorings and add effects just like for native Illustrator drawings:

enter image description here

There are triangles instead of separate lines to make colorings easy. If you want separate lines without overlaps, you can in Illustrator select the triangles and apply Pathfinder panel > Outline. Then insert a new stroke and ungroup, if needed.

A hint: In Inkscape let the triangle pattern have different stroke color than the dots. Let for ex. the dots be strokeless, but filled equally. Then you can in Illustrator use “Select same” for selections (after ungrouping).

Attribution
Source : Link , Question Author : Convincible , Answer Author : user287001

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