# Need help with network diagram example

**URL:** <https://forum.graphviz.org/t/need-help-with-network-diagram-example/3396>\
**Category:** Uncategorized\
**Created:** [August 30, 2026, 5:53pm UTC](https://forum.graphviz.org/t/need-help-with-network-diagram-example/3396 "2026-08-30T17:53:49Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Vasyl](https://sea2.discourse-cdn.com/graphviz/user_avatar/forum.graphviz.org/vasyl/32/2153_2.png) [@Vasyl](https://forum.graphviz.org/u/Vasyl)\
**Post date:** [August 30, 2026, 5:53pm UTC](https://forum.graphviz.org/t/need-help-with-network-diagram-example/3396/1 "2026-08-30T17:53:49Z")

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Dear All,

can somebody help me to reproduce the example from Gallery. I need namely circles with nodes on them.

I mean this one: [A Network Map | Graphviz](https://graphviz.org/Gallery/twopi/twopi2.html)

I tried a lot of different parameters but cannot see that beautiful circle, but only some mesh of nodes.

Regards.

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<div class="post-metadata">

**Author:** ![steveroush](https://avatars.discourse-cdn.com/v4/letter/s/a9adbd/32.png) [@steveroush](https://forum.graphviz.org/u/steveroush)\
**Post date:** [August 30, 2026, 6:45pm UTC](https://forum.graphviz.org/t/need-help-with-network-diagram-example/3396/2 "2026-08-30T18:45:42Z")

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Were you using the **twopi** layout engine ([twopi | Graphviz](https://www.graphviz.org/docs/layouts/twopi/))?

The source for the network graph is here: [https://graphviz.org/Gallery/twopi/twopi2.gv.txt](https://graphviz.org/Gallery/twopi/twopi2.gv.txt)  
simple command line is `twopi -Tsvg -o net.svg twopi2.gv`

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<div class="post-metadata">

**Author:** ![steveroush](https://avatars.discourse-cdn.com/v4/letter/s/a9adbd/32.png) [@steveroush](https://forum.graphviz.org/u/steveroush)\
**Post date:** [August 30, 2026, 7:13pm UTC](https://forum.graphviz.org/t/need-help-with-network-diagram-example/3396/3 "2026-08-30T19:13:16Z")

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You might also look at:  
**circo** ([circo | Graphviz](https://www.graphviz.org/docs/layouts/circo/))  
and  
my radial preprocessor ([A radial Graphviz engine (pre-processor)](https://forum.graphviz.org/t/a-radial-graphviz-engine-pre-processor/1271))

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<div class="post-metadata">

**Author:** ![Vasyl](https://sea2.discourse-cdn.com/graphviz/user_avatar/forum.graphviz.org/vasyl/32/2153_2.png) [@Vasyl](https://forum.graphviz.org/u/Vasyl)\
**Post date:** [August 30, 2026, 7:32pm UTC](https://forum.graphviz.org/t/need-help-with-network-diagram-example/3396/4 "2026-08-30T19:32:22Z")

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Thanks a lot. The parameter -Goverlap was wrong in my case.