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對象用來訪問地圖對象 // public ArrayList cols;  public VisualMapJ myMap;//可管理地圖集的各種狀態，并向服務器轉發客戶請求  //public Hashtable ht;  public RangedThemeTest() {    try{      //指上端的工具欄,工具欄默認包含幾種功能，如果想添加其它功能可以看下面代碼      MapToolBar myMapToolBar=new MapToolBar();      //在工具欄上添加新功能      RadiusSelectionMapTool radTool =new RadiusSelectionMapTool();      //創建地圖      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";/*以下示例是用顏色漸變自動顯示，所以只定義了兩個Rendition      //Rendition類是用來控制圖元顯示，例如是否填充等       Rendition yellow=new RenditionImpl();//RenditionImpl對象用來描述一個圖元，標簽等怎樣顯示       Rendition red=new RenditionImpl();      ColumnStatistics colStats = lyr.fetchColumnStatistics(colName);      // Set number of breaks for data，即定義了5個范圍      int numBreaks=5;     // Compute the distribution of data with 5 breaks and Equal Ranges     //Bucketer類是用于計算在RangedTheme中的斷點，這些斷點被用于構建主題      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 *//*下面示例采用手動方式逐個定義*/      Vector rBreaks=new Vector();      //建立3個范圍      rBreaks.addElement(new Attribute(1));      rBreaks.addElement(new Attribute(17661468));      rBreaks.addElement(new Attribute(1136429638));      //為這3個范圍分別創建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);      //工具欄放上端      this.getContentPane().add(myMapToolBar,BorderLayout.NORTH);      //地圖放中間      this.getContentPane().add(myMap,BorderLayout.CENTER);      //圖例放右邊    //  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();  }}