Examples with ColorLibrary de.lmu.ifi.dbs.elki.visualization.colors.ColorLibrary used on opensource projects

Example 1 with ColorLibrary

use of de.lmu.ifi.dbs.elki.visualization.colors.ColorLibrary in project elki by elki-project.

the class HistogramVisualization method makeVisualization.

@Override
public Visualization makeVisualization(VisualizerContext context, VisualizationTask task, VisualizationPlot plot, double width, double height, Projection proj) {
    HistogramResult curve = task.getResult();
    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);
    // find maximum, determine step size
    int dim = -1;
    DoubleMinMax xminmax = new DoubleMinMax();
    DoubleMinMax yminmax = new DoubleMinMax();
    for (double[] point : curve) {
        xminmax.put(point[0]);
        dim = dim < point.length ? point.length : dim;
        for (int i = 1; i < point.length; i++) {
            yminmax.put(point[i]);
        }
    }
    // Minimum should always start at 0 for histograms
    yminmax.put(0.0);
    // remove one dimension which are the x values.
    dim = dim - 1;
    int size = curve.size();
    double range = xminmax.getMax() - xminmax.getMin();
    double binwidth = range / (size - 1);
    LinearScale xscale = new LinearScale(xminmax.getMin() - binwidth * .49999, xminmax.getMax() + binwidth * .49999);
    LinearScale yscale = new LinearScale(yminmax.getMin(), yminmax.getMax());
    SVGPath[] path = new SVGPath[dim];
    for (int i = 0; i < dim; i++) {
        path[i] = new SVGPath(sizex * xscale.getScaled(xminmax.getMin() - binwidth * .5), sizey);
    }
    // draw curves.
    for (double[] point : curve) {
        for (int d = 0; d < dim; d++) {
            path[d].lineTo(sizex * (xscale.getScaled(point[0] - binwidth * .5)), sizey * (1 - yscale.getScaled(point[d + 1])));
            path[d].lineTo(sizex * (xscale.getScaled(point[0] + binwidth * .5)), sizey * (1 - yscale.getScaled(point[d + 1])));
        }
    }
    // close all histograms
    for (int i = 0; i < dim; i++) {
        path[i].lineTo(sizex * xscale.getScaled(xminmax.getMax() + binwidth * .5), sizey);
    }
    // add axes
    try {
        SVGSimpleLinearAxis.drawAxis(plot, layer, yscale, 0, sizey, 0, 0, SVGSimpleLinearAxis.LabelStyle.LEFTHAND, style);
        SVGSimpleLinearAxis.drawAxis(plot, layer, xscale, 0, sizey, sizex, sizey, SVGSimpleLinearAxis.LabelStyle.RIGHTHAND, style);
    } catch (CSSNamingConflict e) {
        LoggingUtil.exception(e);
    }
    // Setup line styles and insert lines.
    ColorLibrary cl = style.getColorSet(StyleLibrary.PLOT);
    for (int d = 0; d < dim; d++) {
        CSSClass csscls = new CSSClass(this, SERIESID + "_" + d);
        csscls.setStatement(SVGConstants.SVG_FILL_ATTRIBUTE, SVGConstants.SVG_NONE_VALUE);
        csscls.setStatement(SVGConstants.SVG_STROKE_ATTRIBUTE, cl.getColor(d));
        csscls.setStatement(SVGConstants.SVG_STROKE_WIDTH_ATTRIBUTE, style.getLineWidth(StyleLibrary.PLOT));
        plot.addCSSClassOrLogError(csscls);
        Element line = path[d].makeElement(plot);
        line.setAttribute(SVGConstants.SVG_CLASS_ATTRIBUTE, csscls.getName());
        layer.appendChild(line);
    }
    return new StaticVisualizationInstance(context, task, plot, width, height, layer);
}

Example 2 with ColorLibrary

use of de.lmu.ifi.dbs.elki.visualization.colors.ColorLibrary in project elki by elki-project.

the class Parallel3DRenderer method prepareColors.

private void prepareColors(final StylingPolicy sp) {
    if (colors == null) {
        final ColorLibrary cols = shared.stylelib.getColorSet(StyleLibrary.PLOT);
        if (sp instanceof ClassStylingPolicy) {
            ClassStylingPolicy csp = (ClassStylingPolicy) sp;
            final int maxStyle = csp.getMaxStyle();
            colors = new float[maxStyle * 3];
            for (int c = 0, s = csp.getMinStyle(); s < maxStyle; c += 3, s++) {
                Color col = SVGUtil.stringToColor(cols.getColor(s));
                colors[c + 0] = col.getRed() / 255.f;
                colors[c + 1] = col.getGreen() / 255.f;
                colors[c + 2] = col.getBlue() / 255.f;
            }
        } else {
            // Render in black.
            colors = new float[] { 0f, 0f, 0f };
        }
    }
}

Example 3 with ColorLibrary

use of de.lmu.ifi.dbs.elki.visualization.colors.ColorLibrary in project elki by elki-project.

the class PropertiesBasedStyleLibrary method getColorSet.

@Override
public ColorLibrary getColorSet(String key) {
    ColorLibrary cl = getCached(key, COLORSET, ColorLibrary.class);
    if (cl == null) {
        String[] colors = getPropertyValue(key, COLORSET).split(LIST_SEPARATOR);
        cl = new ListBasedColorLibrary(colors, "Default");
        setCached(key, COLORSET, cl);
    }
    return cl;
}