Answer by Chris for How to use image textures to displace and colour planes to create a 3D bar chart (for data visualisation)

if you use this node tree:

shading tree:

GN modifier:

you will get:

As you can see i used a picture of a "1" for the height, and yeah, a movie, not an image as colorizer ;) of course, for an image it is the same without plugging the scene time into the frame.