Image Sampling to Vary Height in Panel

If I wanted to vary the height by dropping a greyscaled image sample(see attached image) onto one of these panels, see youtube tutorial link, how should or could it be done?

There are one million threads about the image sampler around the forums…

Get center of your 2d panels, image sampler, remap numbers, extrude panels
(Didn’t looked at the video, but this should generally do the job)

Thanks, Tim. I’ll peruse a bit more.