Ingesting simple gridded NetCDF data

[petwa]

Thanks Sylvain.
I ended up using the bathymetry_gebco.py as the very simple example and hacking out large chunks of the skeleton. On visual inspection that seemed to work OK.
My next task is to get it to use our colormap. It looks like the maps are hardcoded. Is there any way to use custom palettes without hacking the syntool code?