post a representative sample of your csv file and I'll make a short tutorial...
basic are:
create an image from your data - open your data >> Print >> save as PDF >> open in Preview >> export Tiff .
in SU - draw a rectangle same digits as your image pixels [ i.e. 430, 660 in Measurements box ] >> 'push/pull' a little
open Materials >> Color >> New Texture and import your Tiff >> Paint the face
use 'line tool' to divide your face [ you can use others as well ]
push/pull your amounts...
john