Hi@arthy,

I'd avice you to do as follows:

1. assign unique IDs to your segments by theCounter,
2. then chop them to vertices by aChopper,
3. assign IDs to every vertex by aCounterand
4. then adjust height of your vertices accordingly.For example you could obtain Z-position of your control points and transfer them to your segment vertices by aNeighborFinder.
5. Once the Z-Attribute has been transferred push the vertex into this position by help of3DForcerand
6. than use aSorterto rearrange correct order of your data.
7. By help ofPointConnectorand separation attribute of your segmentID you will receive the initial features but now with 3D coordinates.

Hope this helps!

Hi@arthy, take a look at the 3DInterpolator transformer.