def get_coordinate_labels(self, x_vals = None, y_vals = None):
result = []
nudge = 0.1*(DOWN+RIGHT)
if x_vals == None and y_vals == None:
x_vals = range(-int(self.x_radius), int(self.x_radius))
y_vals = range(-int(self.y_radius), int(self.y_radius))
for index, vals in zip([0, 1], [x_vals, y_vals]):
num_pair = [0, 0]
for val in vals:
num_pair[index] = val
point = self.num_pair_to_point(num_pair)
num = TexMobject(str(val))
num.scale(self.number_scale_factor)
num.shift(point-num.get_corner(UP+LEFT)+nudge)
result.append(num)
return result
