def set_logyticks(self, row, column, logticks):
        """Manually specify the y-axis log tick values.

        :param row,column: specify the subplot.
        :param logticks: logarithm of the locations for the ticks along the
            axis.

        For example, if you specify [1, 2, 3], ticks will be placed at 10,
        100 and 1000.

        """
        subplot = self.get_subplot_at(row, column)
        subplot.set_logyticks(logticks)