Examples with PRCurve de.lmu.ifi.dbs.elki.evaluation.outlier.OutlierPrecisionRecallCurve.PRCurve used on opensource projects

Example 1 with PRCurve

use of de.lmu.ifi.dbs.elki.evaluation.outlier.OutlierPrecisionRecallCurve.PRCurve in project elki by elki-project.

the class XYCurveVisualization method makeVisualization.

@Override
public Visualization makeVisualization(VisualizerContext context, VisualizationTask task, VisualizationPlot plot, double width, double height, Projection proj) {
    XYCurve curve = task.getResult();
    setupCSS(context, plot);
    final StyleLibrary style = context.getStyleLibrary();
    final double sizex = StyleLibrary.SCALE;
    final double sizey = StyleLibrary.SCALE * height / width;
    final double margin = style.getSize(StyleLibrary.MARGIN);
    Element layer = SVGUtil.svgElement(plot.getDocument(), SVGConstants.SVG_G_TAG);
    final String transform = SVGUtil.makeMarginTransform(width, height, sizex, sizey, margin);
    SVGUtil.setAtt(layer, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, transform);
    // determine scaling
    LinearScale scalex = new LinearScale(curve.getMinx(), curve.getMaxx());
    LinearScale scaley = new LinearScale(curve.getMiny(), curve.getMaxy());
    // plot the line
    SVGPath path = new SVGPath();
    for (XYCurve.Itr iterator = curve.iterator(); iterator.valid(); iterator.advance()) {
        final double x = scalex.getScaled(iterator.getX());
        final double y = 1 - scaley.getScaled(iterator.getY());
        path.drawTo(sizex * x, sizey * y);
    }
    Element line = path.makeElement(plot);
    line.setAttribute(SVGConstants.SVG_CLASS_ATTRIBUTE, SERIESID);
    // add axes
    try {
        SVGSimpleLinearAxis.drawAxis(plot, layer, scaley, 0, sizey, 0, 0, SVGSimpleLinearAxis.LabelStyle.LEFTHAND, style);
        SVGSimpleLinearAxis.drawAxis(plot, layer, scalex, 0, sizey, sizex, sizey, SVGSimpleLinearAxis.LabelStyle.RIGHTHAND, style);
    } catch (CSSNamingConflict e) {
        LoggingUtil.exception(e);
    }
    // Add axis labels
    {
        Element labelx = plot.svgText(sizex * .5, sizey + margin * .9, curve.getLabelx());
        SVGUtil.setCSSClass(labelx, CSS_AXIS_LABEL);
        layer.appendChild(labelx);
        Element labely = plot.svgText(margin * -.8, sizey * .5, curve.getLabely());
        SVGUtil.setCSSClass(labely, CSS_AXIS_LABEL);
        SVGUtil.setAtt(labely, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, "rotate(-90," + FormatUtil.NF6.format(margin * -.8) + "," + FormatUtil.NF6.format(sizey * .5) + ")");
        layer.appendChild(labely);
    }
    // Add AUC value when found
    if (curve instanceof ROCResult) {
        double rocauc = ((ROCResult) curve).getAUC();
        String lt = OutlierROCCurve.ROCAUC_LABEL + ": " + FormatUtil.NF.format(rocauc);
        if (rocauc <= 0.5) {
            Element auclbl = plot.svgText(sizex * 0.5, sizey * 0.10, lt);
            SVGUtil.setCSSClass(auclbl, CSS_AXIS_LABEL);
            layer.appendChild(auclbl);
        } else {
            Element auclbl = plot.svgText(sizex * 0.5, sizey * 0.95, lt);
            SVGUtil.setCSSClass(auclbl, CSS_AXIS_LABEL);
            layer.appendChild(auclbl);
        }
    }
    if (curve instanceof PRCurve) {
        double prauc = ((PRCurve) curve).getAUC();
        String lt = OutlierPrecisionRecallCurve.PRAUC_LABEL + ": " + FormatUtil.NF.format(prauc);
        if (prauc <= 0.5) {
            Element auclbl = plot.svgText(sizex * 0.5, sizey * 0.10, lt);
            SVGUtil.setCSSClass(auclbl, CSS_AXIS_LABEL);
            layer.appendChild(auclbl);
        } else {
            Element auclbl = plot.svgText(sizex * 0.5, sizey * 0.95, lt);
            SVGUtil.setCSSClass(auclbl, CSS_AXIS_LABEL);
            layer.appendChild(auclbl);
        }
    }
    layer.appendChild(line);
    return new StaticVisualizationInstance(context, task, plot, width, height, layer);
}