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);
}