def geomean(values):
    return reduce(mul, values) ** (1.0 / len(values))
Returns the linear units.
dataset/ETHPy150Open ARM-software/workload-automation/wlauto/utils/misc.py/geomean--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/gis/db/backends/base.py/SpatialRefSysMixin.linear_units