如何在图表中执行轴上的大数字(例如,10 ^ 3格式)? [英] How to perform big numbers on axis (for example, 10^3 format) in chart?
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问题描述
使用大空间执行长数不是一个好的决定。
如果我的图表中等规模约为50 000,则在Y轴上将写成50 000,60000,10 000。我能在50 * 10 ^ 3或其他地方执行此操作吗?
对于具有多种尺度的图表,例如这里
Using a big space performing long numbers is not a good decision. If I have a graph with a medium scale about 50 000, on the Y axis will be written "50 000, 60 000, 10 000". Can I perform it there like 50 * 10^3 or something else? It's necessary for charts with several scales like here
推荐答案
使用 tickLabelFormatter
在轴上。例如:
Use a tickLabelFormatter
on the axis. For example:
NumberFormat format = new DecimalFormat("#.#E0");
yAxis.setTickLabelFormatter(new StringConverter<Number>() {
@Override
public String toString(Number number) {
return format.format(number.doubleValue());
}
@Override
public Number fromString(String string) {
try {
return format.parse(string);
} catch (ParseException e) {
e.printStackTrace();
return 0 ;
}
}
});
完整示例:
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.stage.Stage;
import javafx.util.StringConverter;
public class LineChartWithFormattedNumbers extends Application {
@Override
public void start(Stage primaryStage) {
final NumberAxis xAxis = new NumberAxis();
final NumberAxis yAxis = new NumberAxis();
NumberFormat format = new DecimalFormat("#.#E0");
yAxis.setTickLabelFormatter(new StringConverter<Number>() {
@Override
public String toString(Number number) {
return format.format(number.doubleValue());
}
@Override
public Number fromString(String string) {
try {
return format.parse(string);
} catch (ParseException e) {
e.printStackTrace();
return 0 ;
}
}
});
xAxis.setLabel("Number of Month");
//creating the chart
final LineChart<Number,Number> lineChart =
new LineChart<Number,Number>(xAxis,yAxis);
lineChart.setTitle("Stock Monitoring, 2010");
//defining a series
XYChart.Series<Number, Number> series = new XYChart.Series<>();
series.setName("My portfolio");
//populating the series with data
series.getData().add(new XYChart.Data<>(1, 23e10));
series.getData().add(new XYChart.Data<>(2, 14e9));
series.getData().add(new XYChart.Data<>(3, 15e10));
series.getData().add(new XYChart.Data<>(4, 24e9));
series.getData().add(new XYChart.Data<>(5, 34e10));
series.getData().add(new XYChart.Data<>(6, 36e10));
series.getData().add(new XYChart.Data<>(7, 22e10));
series.getData().add(new XYChart.Data<>(8, 45e10));
series.getData().add(new XYChart.Data<>(9, 43e10));
series.getData().add(new XYChart.Data<>(10, 17e10));
series.getData().add(new XYChart.Data<>(11, 29e10));
series.getData().add(new XYChart.Data<>(12, 25e10));
Scene scene = new Scene(lineChart,800,600);
lineChart.getData().add(series);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
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