Computation times

00:00.718 total execution time for 4 files from projections/nongeo:

Example	Time	Mem (MB)
Polar (polar.py)	00:00.261	0.0
Cartesian logarithmic (cartesian_logarithmic.py)	00:00.156	0.0
Cartesian power (cartesian_power.py)	00:00.154	0.0
Cartesian linear (cartesian_linear.py)	00:00.146	0.0