Question

我需要使用Jfreechart制作3D圆柱条形图，如链接图片http://www.jzy3d.org/gallery/web/demo-histogram.png所示。我在主方法中的两行代码上遇到了问题：chart.getAxeLayout().setMainColor(Color.WHITE);和chart.getView().setBackgroundColor(Color.BLACK);。有谁知道这里的问题是什么？

提前致谢

import java.awt.Color;

import org.jzy3d.chart.Chart;
import org.jzy3d.chart.ChartLauncher;
import org.jzy3d.colors.ColorMapper;
import org.jzy3d.colors.colormaps.ColorMapRainbow;
import org.jzy3d.maths.Coord3d;
import org.jzy3d.plot3d.primitives.MultiColorScatter;

public class chart 
{
    int size = 100000;
    float x;
    float y;
    float z;
    public void crtaj()
    {
        Coord3d[] points = new Coord3d[size];

        // Create scatter points
        for(int i=0; i<size; i++){
            x = (float)Math.random() - 0.5f;
            y = (float)Math.random() - 0.5f;
            z = (float)Math.random() - 0.5f;
            points[i] = new Coord3d(x, y, z);
        }       

        // Create a drawable scatter with a colormap
        MultiColorScatter scatter = new MultiColorScatter( points, new ColorMapper( new ColorMapRainbow(), -0.5f, 0.5f ) );

        // Create a chart and add scatter
        Chart chart = new Chart();
        chart.getAxeLayout();//.setMainColor(Color.WHITE);
        chart.getView();//.setBackgroundColor(Color.BLACK);
        chart.getScene().add(scatter);
        ChartLauncher.openChart(chart);
    }

    public static void main(String[] args)
    {
        /*chart proba = new chart();
        proba.crtaj();*/

        int size = 100000;
        float x;
        float y;
        float z;
        Coord3d[] points = new Coord3d[size];

        // Create scatter points
        for(int i=0; i<size; i++){
            x = (float)Math.random() - 0.5f;
            y = (float)Math.random() - 0.5f;
            z = (float)Math.random() - 0.5f;
            points[i] = new Coord3d(x, y, z);
        }       

        // Create a drawable scatter with a colormap
        MultiColorScatter scatter = new MultiColorScatter( points, new ColorMapper( new ColorMapRainbow(), -0.5f, 0.5f ) );

        Chart chart = new Chart();
        chart.getAxeLayout().setMainColor(Color.WHITE);
        chart.getView().setBackgroundColor(Color.BLACK);
        chart.getScene().add(scatter);
        ChartLauncher.openChart(chart);
    }
}

Answer 1

在您的代码中，您已导入java.awt.Color。您需要导入org.jzy3d.colors.Color而不是java.awt.Color。删除java.awt.Color导入并添加import语句，如下所示：

import org.jzy3d.colors.Color;

它会起作用。

与Jfreechart的3d圆筒长条图

1 个答案: