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This charting library ${project.artifactId}- is an extension
in the spirit of Oracle's XYChart and performance/time-proven JDataViewer charting functionalities.
Emphasis was put on plotting performance for both large number of data points and real-time displays,
as well as scientific accuracies leading to error bar/surface plots, and other scientific plotting
features (parameter measurements, fitting, multiple axes, zoom, ...).
package de.gsi.chart.plugins.measurements;
import static de.gsi.chart.axes.AxisMode.X;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import org.controlsfx.tools.Borders;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import de.gsi.chart.XYChart;
import de.gsi.chart.axes.Axis;
import de.gsi.chart.axes.AxisLabelFormatter;
import de.gsi.chart.axes.AxisMode;
import de.gsi.chart.axes.spi.DefaultNumericAxis;
import de.gsi.chart.plugins.AbstractSingleValueIndicator;
import de.gsi.chart.plugins.XValueIndicator;
import de.gsi.chart.plugins.YValueIndicator;
import de.gsi.dataset.DataSet;
import de.gsi.dataset.event.UpdateEvent;
import javafx.scene.Node;
import javafx.scene.control.Label;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
/**
* @author rstein
*/
public class ValueIndicator extends AbstractChartMeasurement {
private static final Logger LOGGER = LoggerFactory.getLogger(ValueIndicator.class);
protected static final int SMALL_FORMAT_THRESHOLD = 3;
private static final String FORMAT_SMALL_SCALE = "0.###";
private static final String FORMAT_LARGE_SCALE = "0.##E0";
public static final int DEFAULT_SMALL_AXIS = 6; // [orders of magnitude],
// e.g. '4' <-> [1,10000]
protected final DecimalFormat formatterSmall = new DecimalFormat(ValueIndicator.FORMAT_SMALL_SCALE);
protected final DecimalFormat formatterLarge = new DecimalFormat(ValueIndicator.FORMAT_LARGE_SCALE);
protected AbstractSingleValueIndicator sliderIndicator1;
protected AbstractSingleValueIndicator sliderIndicator2;
protected AxisMode axisMode;
protected NumberFormat formatter;
public ValueIndicator(final XYChart chart, final AxisMode axisMode) {
super(chart);
this.axisMode = axisMode;
final Axis axis = axisMode == X ? chart.getXAxis() : chart.getYAxis();
if (!(axis instanceof Axis)) {
ValueIndicator.LOGGER.warn("axis type " + axis.getClass().getSimpleName()
+ "not compatible with indicator (needs to derivce from Axis)");
return;
}
final Axis numAxis = axis;
formatter = formatterSmall;
getDialogContentBox().getChildren().addAll(
new HBox(new Label("Min. Range: "), valueField.getMinRangeTextField()),
new HBox(new Label("Max. Range: "), valueField.getMaxRangeTextField()));
final double lower = numAxis.getLowerBound();
final double upper = numAxis.getUpperBound();
final double middle = 0.5 * Math.abs(upper - lower) + Math.min(lower, upper);
System.err.println(
"axis title = " + numAxis.getLabel() + " middle = " + middle + " min = " + numAxis.getUpperBound());
if (axisMode == X) {
sliderIndicator1 = new XValueIndicator(numAxis, middle);
sliderIndicator2 = new XValueIndicator(numAxis, middle);
} else {
sliderIndicator1 = new YValueIndicator(numAxis, middle);
sliderIndicator2 = new YValueIndicator(numAxis, middle);
}
sliderIndicator1.setText("Marker#" + AbstractChartMeasurement.markerCount);
chart.getPlugins().add(sliderIndicator1);
AbstractChartMeasurement.markerCount++;
title = "Value@Marker#" + (AbstractChartMeasurement.markerCount - 1);
chart.requestLayout();
}
@Override
public void initialize() {
final Node node = Borders.wrap(valueField).lineBorder().title(title).color(Color.BLACK).build().build();
node.setMouseTransparent(true);
displayPane.getChildren().add(node);
sliderIndicator1.valueProperty().addListener((ch, oldValue, newValue) -> {
if (oldValue != newValue) {
handle(null);
}
});
// chartPane.addListener(e -> invalidated(null));
super.showConfigDialogue();
handle(null);
chart.requestLayout();
}
@Override
protected void nominalAction() {
super.nominalAction();
}
@Override
protected void defaultAction() {
super.defaultAction();
valueField.resetRanges();
}
@Override
protected void removeAction() {
super.removeAction();
chart.getPlugins().remove(sliderIndicator1);
chart.requestLayout();
}
@Override
public void handle(final UpdateEvent observable) {
double val;
final DataSet selectedDataSet = getDataSet();
final Axis axis;
final double newValue = sliderIndicator1.getValue();
if (axisMode == X) {
final int index = selectedDataSet.getXIndex(newValue);
val = selectedDataSet.getY(index);
axis = chart.getYAxis();
} else {
final int index = selectedDataSet.getYIndex(newValue);
val = selectedDataSet.getX(index);
axis = chart.getXAxis();
}
// update label unitTextField
valueField.setUnit(axis.getUnit() == null ? "" : axis.getUnit());
// update label valueTextField
String valueLabel;
if (axis instanceof DefaultNumericAxis) {
final AxisLabelFormatter axisFormatter = ((DefaultNumericAxis) axis).getAxisLabelFormatter();
valueLabel = axisFormatter.toString(val);
} else {
if (Math.abs(Math.log10(Math.abs(val))) < ValueIndicator.SMALL_FORMAT_THRESHOLD) {
formatter = formatterSmall;
} else {
formatter = formatterLarge;
}
valueLabel = formatter.format(val);
}
valueField.setValue(val, valueLabel);
}
}