def __init__(self, iterable=None, **kwds):
        self.update(iterable, **kwds)
Converts a value from 0 to 1 to a value from 0 .. canvas height
dataset/ETHPy150Open PythonCharmers/python-future/docs/3rd-party-py3k-compat-code/pandas_py3k.py/_Counter.__init__--crossover with--dataset/ETHPy150Open tobspr/RenderPipeline/toolkit/day_time_editor/curve_widget.py/CurveWidget._get_y_value_for