Comment faire pivoter coche les étiquettes sur le domaine d'un certain nombre axe JFreeChart?

La méthode setVerticalTickLabels() peut être une alternative. Sinon, je ne vois pas le choix, mais pour remplacer refreshTicksHorizontal(). Voir aussi ce exemple.

import java.awt.Color;
import java.awt.Dimension;
import java.util.*;
import org.jfree.chart.*;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
/**
* @see https://stackoverflow.com/questions/7208657
* @see https://stackoverflow.com/questions/7071057
*/
public class ScatterTickLabels extends ApplicationFrame {
public ScatterTickLabels(String s) {
super(s);
final ChartPanel chartPanel = createDemoPanel();
chartPanel.setPreferredSize(new Dimension(640, 480));
this.add(chartPanel);
}
public static ChartPanel createDemoPanel() {
JFreeChart jfreechart = ChartFactory.createScatterPlot(
"Scatter Plot Demo", "X", "Y", samplexydataset(),
PlotOrientation.VERTICAL, true, true, false);
XYPlot xyPlot = (XYPlot) jfreechart.getPlot();
xyPlot.setDomainCrosshairVisible(true);
xyPlot.setRangeCrosshairVisible(true);
XYItemRenderer renderer = xyPlot.getRenderer();
renderer.setSeriesPaint(0, Color.blue);
NumberAxis domain = (NumberAxis) xyPlot.getDomainAxis();
domain.setVerticalTickLabels(true);
return new ChartPanel(jfreechart);
}
private static XYDataset samplexydataset() {
int cols = 20;
int rows = 20;
XYSeriesCollection xySeriesCollection = new XYSeriesCollection();
XYSeries series = new XYSeries("Random");
Random rand = new Random();
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
double x = rand.nextGaussian();
double y = rand.nextGaussian();
series.add(x, y);
}
}
xySeriesCollection.addSeries(series);
return xySeriesCollection;
}
public static void main(String args[]) {
ScatterTickLabels demo = new ScatterTickLabels("Scatter Plot Demo");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}

OriginalL'auteur trashgod

Vous avez à regarder la super-classe: De l'axe.setLabelAngle(rad).

Et voici un exemple.

MODIFIER: ci-dessus n'a pas été utile, désolé.

J'ai regardé le code de l'org.jfreechart.le graphique.de l'axe.NumberAxis.refreshTicksHorizontal. Il est en fait un angle qui est de 0.0 (le dernier argument dans tous les new NumberTick(...,0.0) constructeurs). Vous pourriez faire une sous-classe de NumberAxis qui remplace la méthode refreshTicksHorizontal avec un qui utilise un angle différent (spécifié dans votre constructeur).

Il ressemble refreshTicks est toujours appelée lors du dessin du graphe, de sorte que vous n'avez pas à vous soucier de ne pas être appelé.

/**
* Calculates the positions of the tick labels for the axis, storing the
* results in the tick label list (ready for drawing).
*
* @param g2  the graphics device.
* @param dataArea  the area in which the data should be drawn.
* @param edge  the location of the axis.
*
* @return A list of ticks.
*/
protected List refreshTicksHorizontal(Graphics2D g2,
Rectangle2D dataArea, RectangleEdge edge) {
List result = new java.util.ArrayList();
Font tickLabelFont = getTickLabelFont();
g2.setFont(tickLabelFont);
if (isAutoTickUnitSelection()) {
selectAutoTickUnit(g2, dataArea, edge);
}
TickUnit tu = getTickUnit();
double size = tu.getSize();
int count = calculateVisibleTickCount();
double lowestTickValue = calculateLowestVisibleTickValue();
if (count <= ValueAxis.MAXIMUM_TICK_COUNT) {
int minorTickSpaces = getMinorTickCount();
if (minorTickSpaces <= 0) {
minorTickSpaces = tu.getMinorTickCount();
}
for (int minorTick = 1; minorTick < minorTickSpaces; minorTick++) {
double minorTickValue = lowestTickValue 
- size * minorTick / minorTickSpaces;
if (getRange().contains(minorTickValue)){
result.add(new NumberTick(TickType.MINOR, minorTickValue,
"", TextAnchor.TOP_CENTER, TextAnchor.CENTER,
0.0));
}
}
for (int i = 0; i < count; i++) {
double currentTickValue = lowestTickValue + (i * size);
String tickLabel;
NumberFormat formatter = getNumberFormatOverride();
if (formatter != null) {
tickLabel = formatter.format(currentTickValue);
}
else {
tickLabel = getTickUnit().valueToString(currentTickValue);
}
TextAnchor anchor = null;
TextAnchor rotationAnchor = null;
double angle = 0.0;
if (isVerticalTickLabels()) {
anchor = TextAnchor.CENTER_RIGHT;
rotationAnchor = TextAnchor.CENTER_RIGHT;
if (edge == RectangleEdge.TOP) {
angle = Math.PI / 2.0;
}
else {
angle = -Math.PI / 2.0;
}
}
else {
if (edge == RectangleEdge.TOP) {
anchor = TextAnchor.BOTTOM_CENTER;
rotationAnchor = TextAnchor.BOTTOM_CENTER;
}
else {
anchor = TextAnchor.TOP_CENTER;
rotationAnchor = TextAnchor.TOP_CENTER;
}
}
Tick tick = new NumberTick(new Double(currentTickValue),
tickLabel, anchor, rotationAnchor, angle);
result.add(tick);
double nextTickValue = lowestTickValue + ((i + 1)* size);
for (int minorTick = 1; minorTick < minorTickSpaces;
minorTick++) {
double minorTickValue = currentTickValue
+ (nextTickValue - currentTickValue)
* minorTick / minorTickSpaces;
if (getRange().contains(minorTickValue)){
result.add(new NumberTick(TickType.MINOR,
minorTickValue, "", TextAnchor.TOP_CENTER,
TextAnchor.CENTER, 0.0));
}
}
}
}
return result;
}

OriginalL'auteur toto2