rangedthemetest.java

MapXtreme 用于电子地图制作与分析

package barchant;
import java.lang.*;
import java.util.*;
import java.util.Hashtable;
import java.awt.*;
import com.mapinfo.mapj.*;
import com.mapinfo.graphics.Rendition;
import com.mapinfo.graphics.RenditionImpl;
import java.util.List;
import com.mapinfo.dp.ColumnStatistics;
import com.mapinfo.dp.util.Bucketer;
import com.mapinfo.dp.util.LinearRenditionSpreader;
//import com.mapinfo.dp.analysis.AnalysisTableDescHelper;
//import com.mapinfo.legend.AnalysisLayerChartLegend;
import javax.swing.*;
//import com.mapinfo.mapj.BarChartProperties;
import com.mapinfo.beans.vmapj.VisualMapJ;
import com.mapinfo.beans.tools.*;
import com.mapinfo.theme.RangedTheme;
import com.mapinfo.theme.ThemeList;

import com.mapinfo.dp.Attribute;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class RangedThemeTest extends JFrame {

  public FeatureLayer lyr;//Feature对象用来访问地图对象
 // public ArrayList cols;
  public VisualMapJ myMap;//可管理地图集的各种状态，并向服务器转发客户请求
  //public Hashtable ht;
  public RangedThemeTest() {
    try{
      //指上端的工具栏,工具栏默认包含几种功能，如果想添加其它功能可以看下面代码
      MapToolBar myMapToolBar=new MapToolBar();
      //在工具栏上添加新功能
      RadiusSelectionMapTool radTool =new RadiusSelectionMapTool();
      //创建地图
      myMap=new VisualMapJ();
      myMap.getMapJ().loadMapDefinition("d:\\program files\\MapInfo\\MapXtreme-4.7.0\\examples\\server\\data\\local\\world.mdf");
      lyr = (FeatureLayer)myMap.getMapJ().getLayers().getLayer("World Countries");
      String colName = "POP_1994";

/*以下示例是用颜色渐变自动显示，所以只定义了两个Rendition
      //Rendition类是用来控制图元显示，例如是否填充等
       Rendition yellow=new RenditionImpl();//RenditionImpl对象用来描述一个图元，标签等怎样显示
       Rendition red=new RenditionImpl();
      ColumnStatistics colStats = lyr.fetchColumnStatistics(colName);
      // Set number of breaks for data，即定义了5个范围
      int numBreaks=5;
     // Compute the distribution of data with 5 breaks and Equal Ranges
     //Bucketer类是用于计算在RangedTheme中的断点，这些断点被用于构建主题
      List rBreaks = (List) Bucketer.computeDistribution(numBreaks,colStats,Bucketer.DISTRIBUTION_TYPE_EQUAL_RANGES);
     // Set up a red and a yellow rendition and then spread the colors
      yellow.setValue(Rendition.FILL, Color.yellow);
      yellow.setValue(Rendition.STROKE_WIDTH, 2);
      red.setValue(Rendition.FILL, Color.red);
      red.setValue(Rendition.STROKE_WIDTH, 4);
      List rends = (List) LinearRenditionSpreader.spread(numBreaks, yellow, red);
      // Create Theme object
 */
/*下面示例采用手动方式逐个定义*/
      Vector rBreaks=new Vector();
      //建立3个范围
      rBreaks.addElement(new Attribute(1));
      rBreaks.addElement(new Attribute(17661468));
      rBreaks.addElement(new Attribute(1136429638));
      //为这3个范围分别创建Rendition
      Rendition red=new RenditionImpl();
      Rendition gray=new RenditionImpl();
      Rendition green=new RenditionImpl();
      red.setValue(Rendition.FILL, Color.red);
      red.setValue(Rendition.STROKE_WIDTH, 2);
      gray.setValue(Rendition.FILL, Color.yellow);
      gray.setValue(Rendition.STROKE_WIDTH, 2);
      green.setValue(Rendition.FILL, Color.green);
      green.setValue(Rendition.STROKE_WIDTH, 2);

      Vector rends=new Vector();
      rends.addElement(red);
      rends.addElement(gray);
      rends.addElement(green);
      RangedTheme rTheme = new RangedTheme(colName, rBreaks, rends, "States by Pop_1994");
      // Get ThemeList class object
      ThemeList tList=lyr.getThemeList();
       // Add theme to Layers themeList
      tList.add(rTheme);
     //myMap.getMapJ().getLayers().elementAt(1).getThemeList().add(rTheme);


      //工具栏放上端
      this.getContentPane().add(myMapToolBar,BorderLayout.NORTH);
      //地图放中间
      this.getContentPane().add(myMap,BorderLayout.CENTER);
      //图例放右边
    //  this.getContentPane().add(legend,BorderLayout.EAST);
      this.setVisible(true);
      this.show();



    }catch(Exception e){
      System.out.println("Error");
      e.printStackTrace();
    }
  }

  public static void main(String args[]){
    RangedThemeTest bclr=new RangedThemeTest();
  }
}