Exemplo n.º 1
0
        public int print(Graphics g,PageFormat pf,int pageIndex) {

                if (pageIndex == 0) {
                        Graphics2D g2d= (Graphics2D)g;
                        g2d.translate(pf.getImageableX(), pf.getImageableY()); 
                        g2d.setColor(Color.black);
                        g2d.drawString("example string", 250, 250);
                        g2d.fillRect(0, 0, 200, 200);
                        return Printable.PAGE_EXISTS;                                   
                } else {
                        return Printable.NO_SUCH_PAGE;
                }
        }
  private void drawPlot(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;
    g2d.setRenderingHint(
        RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
    g2d.setColor(Color.white);
    g2d.fillRect(0, 0, getWidth(), getHeight());

    double activeWidth = getWidth() - leftMargin - rightMargin;
    double activeHeight = getHeight() - topMargin - bottomMargin;
    int bottomY = getHeight() - bottomMargin;
    int rightX = getWidth() - rightMargin;

    // draw data line
    int x1, x2, y1, y2;
    g2d.setColor(Color.red);
    for (int i = 1; i < numComponents; i++) {
      x1 = (int) (leftMargin + ((double) (i - 1) / (numComponents - 1)) * activeWidth);
      y1 = (int) (bottomY - (plotData[i - 1][plotIndex] * 10.0) / 1000 * activeHeight);
      x2 = (int) (leftMargin + ((double) (i) / (numComponents - 1)) * activeWidth);
      y2 = (int) (bottomY - (plotData[i][plotIndex] * 10) / 1000 * activeHeight);
      g2d.drawLine(x1, y1, x2, y2);
    }

    // draw data points
    int radius = 2;
    for (int i = 0; i < numComponents; i++) {
      x1 = (int) (leftMargin + ((double) (i) / (numComponents - 1)) * activeWidth);
      y1 = (int) (bottomY - (plotData[i][plotIndex] * 10.0) / 1000 * activeHeight);
      g2d.drawOval(x1 - radius - 1, y1 - radius - 1, 2 * radius + 2, 2 * radius + 2);
    }

    // draw axes
    g2d.setColor(Color.black);
    g2d.drawLine(leftMargin, bottomY, rightX, bottomY);
    g2d.drawLine(leftMargin, bottomY, leftMargin, topMargin);
    g2d.drawLine(leftMargin, topMargin, rightX, topMargin);
    g2d.drawLine(rightX, bottomY, rightX, topMargin);

    // draw ticks
    int tickSize = 4;
    for (int i = 1; i <= numComponents; i++) {
      x1 = (int) (leftMargin + ((double) (i - 1) / (numComponents - 1)) * activeWidth);
      g2d.drawLine(x1, bottomY, x1, bottomY + tickSize);
    }

    for (int i = 0; i <= 1000; i += 100) {
      y1 = (int) (bottomY - i / 1000.0 * activeHeight);
      g2d.drawLine(leftMargin, y1, leftMargin - tickSize, y1);
    }

    // labels
    DecimalFormat df = new DecimalFormat("#,###,###.###");
    Font font = new Font("SanSerif", Font.PLAIN, 11);
    FontMetrics metrics = g.getFontMetrics(font);
    int hgt, adv;
    hgt = metrics.getHeight();

    // x-axis labels
    String label;
    for (int i = 1; i <= numComponents; i++) {
      label = String.valueOf(i);
      x1 = (int) (leftMargin + ((double) (i - 1) / (numComponents - 1)) * activeWidth);
      adv = metrics.stringWidth(label) / 2;
      g2d.drawString(label, x1 - adv, bottomY + hgt + 4);
    }
    label = "Component";
    adv = metrics.stringWidth(label);
    int xAxisMidPoint = (int) (leftMargin + activeWidth / 2);
    g2d.drawString(label, xAxisMidPoint - adv / 2, bottomY + 2 * hgt + 6);

    // y-axis labels

    // rotate the font
    Font oldFont = g.getFont();
    Font f = oldFont.deriveFont(AffineTransform.getRotateInstance(-Math.PI / 2.0));
    g2d.setFont(f);

    int yAxisMidPoint = (int) (topMargin + activeHeight / 2);
    int offset;
    label = "Explained Variance (%)";
    offset = metrics.stringWidth("100.0") + 12 + hgt;
    adv = metrics.stringWidth(label);
    g2d.drawString(label, leftMargin - offset, yAxisMidPoint + adv / 2);

    // replace the rotated font.
    g2d.setFont(oldFont);

    df = new DecimalFormat("0.0");
    for (int i = 0; i <= 1000; i += 100) {
      label = df.format(i / 10);
      y1 = (int) (bottomY - i / 1000.0 * activeHeight);
      adv = metrics.stringWidth(label);
      g2d.drawString(label, leftMargin - adv - 12, y1 + hgt / 2);
    }

    // title

    // bold font
    oldFont = g.getFont();
    font = font = new Font("SanSerif", Font.BOLD, 12);
    g2d.setFont(font);

    label = "PCA Scree Plot";
    adv = metrics.stringWidth(label);
    g2d.drawString(label, getWidth() / 2 - adv / 2, topMargin - hgt - 5);

    g2d.setFont(oldFont);
  }