def __init__(self, axis_min=None, axis_max=None):
    self.min = axis_min
    self.max = axis_max
    self.labels = []
    self.label_positions = []
    self.grid_spacing = 0
    self.label_gridlines = False

# TODO: Add other chart types.  Order of preference:
# - scatter plots
# - us/world maps
Construct a new Axis.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/_internal/graphy/common.py/Axis.__init__