Creating network graphs

[Fatih97]

Hi,

I want to create a network graph.
The idea: Making a simple graph with weighted edges, for e.g. from Paris to Madrid is the distance 1200km.
Do I need before making a graph an ‘Adjacency matrix’ ?

[aworker]

Hi @Fatih97

Maybe the workflow example in the following solved thread could help you to create a first network graph from your data:

Create a lists of clustered nodes in a network

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. [KnimeEgPub] 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 …

As you can see from the snapshot, the only required data is a table with the network edges between nodes. The KNIME network nodes will implicitly calculate the ‘Adjacency Matrix’ from there and then you can customize the network with extra features associated to the nodes or the edges.

Hope it helps.

Best

Ael

[Fatih97]

Thank you for your answer.
I found this workflow Create Network from Edge Table – KNIME Hub
But I dont understand, why here is the same table is used 2x.
Do you know why?

[aworker]

@Fatih97

I dont understand, why here is the same table is used 2x.

Because the 2nd table is used to add features to the nodes and edges