Create node set based on vertex

Hi,

You can create group from cad vertex. You can follow below picture. Firstly select vertex and right click with mouse. Select create group. But I didn't catch what do you mean exactly about vector ? Can you give more detail ?

I prepare draft in paint /emoticons/default_biggrin.png' srcset='/emoticons/biggrin@2x.png 2x' title=':D' width='20' /> 
I want to select nodes (blue dots) based only on vertex (red dot) and vector (black arrow). For this simple example, I can use edge (and select nodes by edge) , but for more complex geometry, I need only vertex and vector.

I misunderstood at the first time. I'm not sure can it be done directly something like this. You're right you can select with edge nodes directly. I think you can follow this way.

-Firstly create edge with edge > chain tools.

-Then you can select associated entities. You can select complex node path with this way.

Ok, I know this, but what should I do in this case (I have red vertex, and black vector. I need to select only blue nodes, without green. Moreover I have a lot of 'pockets' like this). Also I would like to use python to automatize this process

I found what I need, but only for solid elements /emoticons/default_sad.png' srcset='/emoticons/sad@2x.png 2x' title=':(' width='20' /> I need similar tool but for nodes:

<?xml version="1.0" encoding="UTF-8"?>

You're right this is relate element the simplest way is seemingly what I told you. I have no another idea.

I found solution /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' /> it is possible to select nodes by region and this is what I need!