Increase resource node density?

Do the resource density and resource rate commandline commands still work? If not, what can I use to increase the rate and density of resource nodes?

 

All values provided are the default, adjust accordingly.

Code:

 spawn.max_density         (1)
 spawn.max_rate            (1)
 spawn.min_density         (0.1)
 spawn.min_rate            (0.1)