'Separate data into two groups: increase and decrease
(1) Increase, where close > open and
(2) Decrease, where close <= open'

def separate_increase_decrease(self):

    for index in range(len(self.open)):
        if (self.close[index] is None):
            pass
        elif (self.close[index] > self.open[index]):
            self.increase_x.append(self.all_x[index])
            self.increase_y.append(self.all_y[index])
        else:
            self.decrease_x.append(self.all_x[index])
            self.decrease_y.append(self.all_y[index])
