def plot_done_par_day(ax, orgnodes, done, days,
                      ylabel='Tasks done per day [1/day]'):
    today = int(date2num(datetime.datetime.now())) + 1  # end of today
    start = today - days
    time_array = time_array_closed(orgnodes, done, start)
    ax.hist(time_array, bins=days, range=(start, today),
            color='b', alpha=0.3)
    ax.set_ylabel(ylabel)
dataset/ETHPy150Open tkf/orgviz/orgviz/graphs.py/plot_done_par_day/original