public void actionPerformed(ActionEvent e) {
if (!datapanel.isInitialized()) {
return;
}
datapanel.refreshData();
panel.setDisplayPlot(true);
panel.update(panel.getGraphics());
frame.setSize(700, 600);
frame.setVisible(true);
frame.pack();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setPaint(Color.black);
g2d.setStroke(new BasicStroke());
g2d.setFont(new Font("Century Schoolbook", Font.PLAIN, 12));
if (d.isInitialized() && display_plot) {
d.refreshData();
Float xLower = d.getXLower();
Float xUpper = d.getXUpper();
Float xInterval = d.getXInterval();
Float yLower = d.getYLower();
Float yUpper = d.getYUpper();
Float yInterval = d.getYInterval();
Float dx = xUpper - xLower;
Float dy = yUpper - yLower;
drawCenteredString(g2d, d.getTitle(), 250, 25, (float) 0.);
drawCenteredString(g2d, d.getXTitle(), 250, 475, (float) 0.);
drawCenteredString(g2d, d.getYTitle(), 25, 250, (float) -Math.PI / 2);
drawCenteredString(g2d, xLower.toString(), 50, 475, (float) 0);
drawCenteredString(g2d, xUpper.toString(), 450, 475, (float) 0);
drawCenteredString(g2d, yLower.toString(), 25, 450, (float) 0);
drawCenteredString(g2d, yUpper.toString(), 25, 50, (float) 0);
g2d.setPaint(Color.gray);
for (Float x = new Float(50); x <= 450; x += 400 * xInterval / dx)
g2d.draw(new Line2D.Float(x, 450, x, 50));
for (Float y = new Float(50); y <= 450; y += 400 * yInterval / dy)
g2d.draw(new Line2D.Float(45, y, 450, y));
g2d.setPaint(Color.red);
Float diam = new Float(8);
int num_points = d.getNumberOfPoints();
for (int i = 0; i < num_points; i++) {
Float ex = 400 * (d.getPoint(i).x - xLower) / dx + 50;
ex -= diam / 2;
Float ey = -400 * (d.getPoint(i).y - yLower) / dy + 450;
ey -= diam / 2;
g2d.fill(new Ellipse2D.Float(ex, ey, diam, diam));
}
}
}