def render_sparkline(self, **kwargs):
        """Render a sparkline"""
        spark_options = dict(
            width=200,
            height=50,
            show_dots=False,
            show_legend=False,
            show_x_labels=False,
            show_y_labels=False,
            spacing=0,
            margin=5,
            min_scale=1,
            max_scale=2,
            explicit_size=True,
            no_data_text='',
            js=(),
            classes=(_ellipsis, 'pygal-sparkline')
        )
        spark_options.update(kwargs)
        return self.render(**spark_options)
Render a sparkline