New version of Node Expressions released (1.26) - now supports vector maths, Noise, Voronoi, undo, automatic grouping and custom group nodes. See https://baldingwizard.wixsite.com/blog/node-expressions.
Also, published the first (of hopefully many) tutorials - simple beginnings : https://baldingwizard.wixsite.com/blog/tutorial-geometric-shapes
Added the second tutorial - I’ve been a bit sidetracked squashing a few bugs to the add-on - https://baldingwizard.wixsite.com/blog/tutorial-geometric-shapes2
However, version 1.27 should now be available via Blender Market and should hopefully be much more efficient building large node groups.
Added another tutorial - this time for Volumetric Distortion. Node Expressions is used to convert the coordinates from 3D to the 2D tiles of the slices in a single EXR image.
Added further tutorinals - in particular, generating a volumetric geometric shape and adding volumetric distortion - see https://baldingwizard.wixsite.com/blog/tutorial-volumetric-arrow