tab_covariance.py 文件源码

def __init__(self, parent_plot):
        _KiteSubplotPlot.__init__(self, parent_plot)
        self.plot.setLabels(bottom={'Distance', 'm'},
                            left='Covariance (m<sup>2</sup>)')

        self.cov = pg.PlotDataItem(antialias=True)
        self.cov.setZValue(10)
        self.cov_model = pg.PlotDataItem(antialias=True, pen=pen_covariance)
        self.variance = self.VarianceLine(
            pen=pen_variance,
            angle=0, movable=True, hoverPen=pen_variance_highlight,
            label='Variance: {value:.5f}',
            labelOpts={'position': .975,
                       'anchors': ((1., 0.), (1., 1.)),
                       'color': pg.mkColor(255, 255, 255, 155)})
        self.variance.setToolTip('Move to change variance')

        self.variance.sigPositionChangeFinished.connect(self.setVariance)

        self.addItem(self.variance)

        self.addItem(self.cov)
        self.addItem(self.cov_model)
        # self.cov_lin_pow = pg.PlotDataItem(antialias=True,
        #                                    pen=pen_green_dash)
        # self.addItem(self.cov_lin_pow)

        self.legend = pg.LegendItem(offset=(0., .5))

        self.legend.setParentItem(self.plot.graphicsItem())
        self.legend.addItem(self.cov_model, '')
        self.legend.template = 'Model: {0:.5f} e^(-d/{1:.1f}) | RMS: {rms:.4e}'

        self.model.sigCovarianceChanged.connect(
            self.update)

        self.update()