# Identifying disconnected graphs

**URL:** <https://forum.knime.com/t/identifying-disconnected-graphs/45016>\
**Category:** KNIME Analytics Platform\
**Created:** [July 12, 2022, 10:24am UTC](https://forum.knime.com/t/identifying-disconnected-graphs/45016 "2022-07-12T10:24:53Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![pzkor](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/p/b9bd4f/32.png) [@pzkor](https://forum.knime.com/u/pzkor)\
**Post date:** [July 12, 2022, 10:24am UTC](https://forum.knime.com/t/identifying-disconnected-graphs/45016/1 "2022-07-12T10:24:54Z")

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A seemingly easy task, but turning difficult to me. How to identify disconnected networks such as these three in the picture?  
 ![image](https://forum-cdn.knime.com/uploads/default/original/3X/b/7/b78f498427e5c364cd32393692273b9f9c06ef97.png)

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**Author:** ![aworker](https://forum-cdn.knime.com/user_avatar/forum.knime.com/aworker/32/36421_2.png) [@aworker](https://forum.knime.com/u/aworker)\
**Post date:** [July 12, 2022, 10:52am UTC](https://forum.knime.com/t/identifying-disconnected-graphs/45016/2 "2022-07-12T10:52:14Z")

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Hi @pzkor

The examples included in this previous thread may shed light on how to answer your question:

> [@Create a lists of clustered nodes in a network](https://forum.knime.com/t/create-a-lists-of-clustered-nodes-in-a-network/36558):
>
> Hi… I have a CSV file that lists the relationships between nodes in a whole network that contains sub-networks. An example of what may look like is the image below. The network CSV looks like this: Src Dst Label A B has A E has B C has B H has H I has C G has C D has L S has O M has J K has K N has N J has P R has R P has P Q has Q R has C H has What I need to do is extract clustered nodes into a list so that the final output table of …

[![](https://forum-cdn.knime.com/uploads/default/original/3X/1/8/18dc248e7244619935847d10e467a095c54f4804.png) ](https://forum-cdn.knime.com/uploads/default/original/3X/1/8/18dc248e7244619935847d10e467a095c54f4804.png)

[![](https://forum-cdn.knime.com/uploads/default/original/3X/9/9/9921a29ec516d2cc8d1c2523eadd5900c1b35533.png) ](https://forum-cdn.knime.com/uploads/default/original/3X/9/9/9921a29ec516d2cc8d1c2523eadd5900c1b35533.png)

This other workflow is more advanced and it is answering a more complex question but also worth to have a look at it:

> [@Connected groups using Network Mining nodes](https://forum.knime.com/t/connected-groups-using-network-mining-nodes/43672/4):
>
> Hi @ipazin Would the following solution be of any help ? [[image] ](https://forum-cdn.knime.com/uploads/default/original/3X/1/8/18dc248e7244619935847d10e467a095c54f4804.png) Best wishes, Ael

[![](https://forum-cdn.knime.com/uploads/default/original/3X/3/a/3a10a49826d5d4cd889f33dc204c66e99fa4a97f.png) ](https://forum-cdn.knime.com/uploads/default/original/3X/3/a/3a10a49826d5d4cd889f33dc204c66e99fa4a97f.png)

Hope it helps.

Best  
Ael

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**Author:** ![pzkor](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/p/b9bd4f/32.png) [@pzkor](https://forum.knime.com/u/pzkor)\
**Post date:** [July 14, 2022, 9:08am UTC](https://forum.knime.com/t/identifying-disconnected-graphs/45016/3 "2022-07-14T09:08:30Z")

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Exactly what I needed. Don’t know why I didn’t find this thread myself. Many thanks @aworker!

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**Author:** ![system](https://forum-cdn.knime.com/uploads/default/original/1X/ab3ccf34482a0329361734a18199390177204f15.png) [@system](https://forum.knime.com/u/system)\
**Post date:** [October 12, 2022, 9:09am UTC](https://forum.knime.com/t/identifying-disconnected-graphs/45016/4 "2022-10-12T09:09:26Z")

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