relativescatter.py 文件源码

def _plot(cls, report, axes, categories, styles):
        # Display grid
        axes.grid(b=True, linestyle='-', color='0.75')

        has_points = False
        # Generate the scatter plots
        for category, coords in sorted(categories.items()):
            X, Y = zip(*coords)
            axes.scatter(X, Y, s=42, label=category, **styles[category])
            if X and Y:
                has_points = True

        if report.xscale == 'linear' or report.yscale == 'linear':
            plot_size = report.missing_val * 1.01
        else:
            plot_size = report.missing_val * 1.25

        # make 5 ticks above and below 1
        yticks = []
        tick_step = report.ylim_top**(1/5.0)
        for i in xrange(-5, 6):
            yticks.append(tick_step**i)
        axes.set_yticks(yticks)
        axes.get_yaxis().set_major_formatter(ticker.ScalarFormatter())

        axes.set_xlim(report.xlim_left or -1, report.xlim_right or plot_size)
        axes.set_ylim(report.ylim_bottom or -1, report.ylim_top or plot_size)

        for axis in [axes.xaxis, axes.yaxis]:
            MatplotlibPlot.change_axis_formatter(axis,
                                report.missing_val if report.show_missing else None)
        return has_points