MeteoInfo Java版二次开发教程六

ycjtj1dx202ly

此次教程实现从格点数据生成各种图层，主要包括Contour（等值线）、Shaded（等值填充）、Grid_Fill（格点填充）、Grid_Point（格点点图层）、Raster（栅格图层）、Vector（风场矢量）、Barb（风向杆）、Streamline（流场）。
首先先来实现只需要一个格点数据（GridData）的Contour、Shaded、Grid_Fill、Grid_Point和Raster图层。获取格点数据后需要生成图例，再用DrawMeteoData类的一些静态方法来从GridData创建各种图层：
Contour:  DrawMeteoData.createContourLayer(GridData gridData, LegendScheme aLS, String layerName, String fieldName, boolean isSmooth)
Shaded:  DrawMeteoData.createShadedLayer(GridData gridData, LegendScheme aLS, String layerName, String fieldName, boolean isSmooth)
Grid_Fill:  DrawMeteoData.createGridFillLayer(GridData gridData, LegendScheme aLS, String LName, String fieldName)
Grid_Point:  DrawMeteoData.createGridPointLayer(GridData gridData, LegendScheme aLS, String LName, String fieldName)
Raster:  DrawMeteoData.createRasterLayer(GridData GridData, String LName, LegendScheme aLS)
首先还是在MeteoData菜单下GrADS Data菜单中加入相应的子菜单，然后在各自的事件中输入相应的代码。
代码如下：

1.     private void jMenuItem_ShadedActionPerformed(java.awt.event.ActionEvent evt) {                                                
   
2.         // TODO add your handling code here:
   
3.         //Create a MeteoDataInfo object
   
4.         MeteoDataInfo aDataInfo = new MeteoDataInfo();
   
5. 
   
6.         //Open GrADS data file
   
7.         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";
   
8.         String fileName = dataDir + "model.ctl";
   
9.         aDataInfo.openGrADSData(fileName);
   
10. 
    
11.         //Get GridData
    
12.         GridData press = aDataInfo.getGridData("PS");
    
13. 
    
14.         //Create a legend scheme
    
15.         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(press,LegendType.GraduatedColor, ShapeTypes.Polygon);
    
16. 
    
17.         //Create a shaded layer
    
18.         VectorLayer aLayer = DrawMeteoData.createShadedLayer(press, aLS, "Shaded_PS", "PS", true);
    
19. 
    
20.         //Add layer
    
21.         layersLegend1.getActiveMapFrame().addLayer(aLayer);
    
22.         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 0);
    
23.         layersLegend1.repaint();
    
24. 
    
25.         //Change title of the layout
    
26.         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);
    
27.         aTitle.setLabelText("MeteoInfo Class Library Demo - Shaded Layer");
    
28. 
    
29.         //Add or change the legend in layout
    
30.         LayoutLegend aLegend;
    
31.         if (this.mapLayout1.getLegends().size() > 0) {
    
32.             aLegend = mapLayout1.getLegends().get(0);
    
33.         } else {
    
34.             aLegend = mapLayout1.addLegend(650, 100);
    
35.         }
    
36.         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);
    
37.         aLegend.setLegendLayer(aLayer);
    
38.         mapLayout1.paintGraphics();
    
39.     }                                                
    
40. 
    
41.     private void jMenuItem_GridFillActionPerformed(java.awt.event.ActionEvent evt) {                                                   
    
42.         // TODO add your handling code here:
    
43.         //Create a MeteoDataInfo object
    
44.         MeteoDataInfo aDataInfo = new MeteoDataInfo();
    
45. 
    
46.         //Open GrADS data file
    
47.         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";
    
48.         String fileName = dataDir + "model.ctl";
    
49.         aDataInfo.openGrADSData(fileName);
    
50. 
    
51.         //Get GridData
    
52.         GridData press = aDataInfo.getGridData("PS");
    
53. 
    
54.         //Create a legend scheme
    
55.         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(press,LegendType.GraduatedColor, ShapeTypes.Polygon);
    
56. 
    
57.         //Create a shaded layer
    
58.         VectorLayer aLayer = DrawMeteoData.createGridFillLayer(press, aLS, "GridFill_PS", "PS");
    
59. 
    
60.         //Add layer
    
61.         layersLegend1.getActiveMapFrame().addLayer(aLayer);
    
62.         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 0);
    
63.         layersLegend1.repaint();
    
64. 
    
65.         //Change title of the layout
    
66.         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);
    
67.         aTitle.setLabelText("MeteoInfo Class Library Demo - Grid Fill Layer");
    
68. 
    
69.         //Add or change the legend in layout
    
70.         LayoutLegend aLegend;
    
71.         if (this.mapLayout1.getLegends().size() > 0) {
    
72.             aLegend = mapLayout1.getLegends().get(0);
    
73.         } else {
    
74.             aLegend = mapLayout1.addLegend(650, 100);
    
75.         }
    
76.         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);
    
77.         aLegend.setLegendLayer(aLayer);
    
78.         mapLayout1.paintGraphics();
    
79.     }                                                  
    
80. 
    
81.     private void jMenuItem_GridPointActionPerformed(java.awt.event.ActionEvent evt) {                                                   
    
82.         // TODO add your handling code here:
    
83.         //Create a MeteoDataInfo object
    
84.         MeteoDataInfo aDataInfo = new MeteoDataInfo();
    
85. 
    
86.         //Open GrADS data file
    
87.         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";
    
88.         String fileName = dataDir + "model.ctl";
    
89.         aDataInfo.openGrADSData(fileName);
    
90. 
    
91.         //Get GridData
    
92.         GridData press = aDataInfo.getGridData("PS");
    
93. 
    
94.         //Create a legend scheme
    
95.         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(press,LegendType.GraduatedColor, ShapeTypes.Point);
    
96. 
    
97.         //Create a shaded layer
    
98.         VectorLayer aLayer = DrawMeteoData.createGridPointLayer(press, aLS, "GridPoint_PS", "PS");
    
99. 
    
100.         //Add layer
     
101.         layersLegend1.getActiveMapFrame().addLayer(aLayer);
     
102.         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 2);
     
103.         layersLegend1.repaint();
     
104. 
     
105.         //Change title of the layout
     
106.         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);
     
107.         aTitle.setLabelText("MeteoInfo Class Library Demo - Grid Point Layer");
     
108. 
     
109.         //Add or change the legend in layout
     
110.         LayoutLegend aLegend;
     
111.         if (this.mapLayout1.getLegends().size() > 0) {
     
112.             aLegend = mapLayout1.getLegends().get(0);
     
113.         } else {
     
114.             aLegend = mapLayout1.addLegend(650, 100);
     
115.         }
     
116.         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);
     
117.         aLegend.setLegendLayer(aLayer);
     
118.         mapLayout1.paintGraphics();
     
119.     }                                                   
     
120. 
     
121.     private void jMenuItem_RasterActionPerformed(java.awt.event.ActionEvent evt) {                                                
     
122.         // TODO add your handling code here:
     
123.         //Create a MeteoDataInfo object
     
124.         MeteoDataInfo aDataInfo = new MeteoDataInfo();
     
125. 
     
126.         //Open GrADS data file
     
127.         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";
     
128.         String fileName = dataDir + "model.ctl";
     
129.         aDataInfo.openGrADSData(fileName);
     
130. 
     
131.         //Get GridData
     
132.         GridData press = aDataInfo.getGridData("PS");
     
133. 
     
134.         //Create a legend scheme
     
135.         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(press,LegendType.GraduatedColor, ShapeTypes.Polygon);
     
136. 
     
137.         //Create a shaded layer
     
138.         RasterLayer aLayer = DrawMeteoData.createRasterLayer(press, "GridFill_PS", aLS);
     
139. 
     
140.         //Add layer
     
141.         layersLegend1.getActiveMapFrame().addLayer(aLayer);
     
142.         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 0);
     
143.         layersLegend1.repaint();
     
144. 
     
145.         //Change title of the layout
     
146.         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);
     
147.         aTitle.setLabelText("MeteoInfo Class Library Demo - Raster Layer");
     
148. 
     
149.         //Add or change the legend in layout
     
150.         LayoutLegend aLegend;
     
151.         if (this.mapLayout1.getLegends().size() > 0) {
     
152.             aLegend = mapLayout1.getLegends().get(0);
     
153.         } else {
     
154.             aLegend = mapLayout1.addLegend(650, 100);
     
155.         }
     
156.         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);
     
157.         aLegend.setLegendLayer(aLayer);
     
158.         mapLayout1.paintGraphics();
     
159.     }
     

    private void jMenuItem_ShadedActionPerformed(java.awt.event.ActionEvent evt) {                                                 <br />         // TODO add your handling code here:<br />         //Create a MeteoDataInfo object<br />         MeteoDataInfo aDataInfo = new MeteoDataInfo();<br /> <br />         //Open GrADS data file<br />         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";<br />         String fileName = dataDir + "model.ctl";<br />         aDataInfo.openGrADSData(fileName);<br /> <br />         //Get GridData<br />         GridData press = aDataInfo.getGridData("PS");<br /> <br />         //Create a legend scheme<br />         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(press,LegendType.GraduatedColor, ShapeTypes.Polygon);<br /> <br />         //Create a shaded layer<br />         VectorLayer aLayer = DrawMeteoData.createShadedLayer(press, aLS, "Shaded_PS", "PS", true);<br /> <br />         //Add layer<br />         layersLegend1.getActiveMapFrame().addLayer(aLayer);<br />         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 0);<br />         layersLegend1.repaint();<br /> <br />         //Change title of the layout<br />         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);<br />         aTitle.setLabelText("MeteoInfo Class Library Demo - Shaded Layer");<br /> <br />         //Add or change the legend in layout<br />         LayoutLegend aLegend;<br />         if (this.mapLayout1.getLegends().size() > 0) {<br />             aLegend = mapLayout1.getLegends().get(0);<br />         } else {<br />             aLegend = mapLayout1.addLegend(650, 100);<br />         }<br />         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);<br />         aLegend.setLegendLayer(aLayer);<br />         mapLayout1.paintGraphics();<br />     }                                                <br /> <br />     private void jMenuItem_GridFillActionPerformed(java.awt.event.ActionEvent evt) {                                                   <br />         // TODO add your handling code here:<br />         //Create a MeteoDataInfo object<br />         MeteoDataInfo aDataInfo = new MeteoDataInfo();<br /> <br />         //Open GrADS data file<br />         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";<br />         String fileName = dataDir + "model.ctl";<br />         aDataInfo.openGrADSData(fileName);<br /> <br />         //Get GridData<br />         GridData press = aDataInfo.getGridData("PS");<br /> <br />         //Create a legend scheme<br />         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(press,LegendType.GraduatedColor, ShapeTypes.Polygon);<br /> <br />         //Create a shaded layer<br />         VectorLayer aLayer = DrawMeteoData.createGridFillLayer(press, aLS, "GridFill_PS", "PS");<br /> <br />         //Add layer<br />         layersLegend1.getActiveMapFrame().addLayer(aLayer);<br />         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 0);<br />         layersLegend1.repaint();<br /> <br />         //Change title of the layout<br />         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);<br />         aTitle.setLabelText("MeteoInfo Class Library Demo - Grid Fill Layer");<br /> <br />         //Add or change the legend in layout<br />         LayoutLegend aLegend;<br />         if (this.mapLayout1.getLegends().size() > 0) {<br />             aLegend = mapLayout1.getLegends().get(0);<br />         } else {<br />             aLegend = mapLayout1.addLegend(650, 100);<br />         }<br />         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);<br />         aLegend.setLegendLayer(aLayer);<br />         mapLayout1.paintGraphics();<br />     }                                                  <br /> <br />     private void jMenuItem_GridPointActionPerformed(java.awt.event.ActionEvent evt) {                                                    <br />         // TODO add your handling code here:<br />         //Create a MeteoDataInfo object<br />         MeteoDataInfo aDataInfo = new MeteoDataInfo();<br /> <br />         //Open GrADS data file<br />         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";<br />         String fileName = dataDir + "model.ctl";<br />         aDataInfo.openGrADSData(fileName);<br /> <br />         //Get GridData<br />         GridData press = aDataInfo.getGridData("PS");<br /> <br />         //Create a legend scheme<br />         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(press,LegendType.GraduatedColor, ShapeTypes.Point);<br /> <br />         //Create a shaded layer<br />         VectorLayer aLayer = DrawMeteoData.createGridPointLayer(press, aLS, "GridPoint_PS", "PS");<br /> <br />         //Add layer<br />         layersLegend1.getActiveMapFrame().addLayer(aLayer);<br />         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 2);<br />         layersLegend1.repaint();<br /> <br />         //Change title of the layout<br />         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);<br />         aTitle.setLabelText("MeteoInfo Class Library Demo - Grid Point Layer");<br /> <br />         //Add or change the legend in layout<br />         LayoutLegend aLegend;<br />         if (this.mapLayout1.getLegends().size() > 0) {<br />             aLegend = mapLayout1.getLegends().get(0);<br />         } else {<br />             aLegend = mapLayout1.addLegend(650, 100);<br />         }<br />         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);<br />         aLegend.setLegendLayer(aLayer);<br />         mapLayout1.paintGraphics();<br />     }                                                   <br /> <br />     private void jMenuItem_RasterActionPerformed(java.awt.event.ActionEvent evt) {                                                 <br />         // TODO add your handling code here:<br />         //Create a MeteoDataInfo object<br />         MeteoDataInfo aDataInfo = new MeteoDataInfo();<br /> <br />         //Open GrADS data file<br />         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";<br />         String fileName = dataDir + "model.ctl";<br />         aDataInfo.openGrADSData(fileName);<br /> <br />         //Get GridData<br />         GridData press = aDataInfo.getGridData("PS");<br /> <br />         //Create a legend scheme<br />         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(press,LegendType.GraduatedColor, ShapeTypes.Polygon);<br /> <br />         //Create a shaded layer<br />         RasterLayer aLayer = DrawMeteoData.createRasterLayer(press, "GridFill_PS", aLS);<br /> <br />         //Add layer<br />         layersLegend1.getActiveMapFrame().addLayer(aLayer);<br />         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 0);<br />         layersLegend1.repaint();<br /> <br />         //Change title of the layout<br />         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);<br />         aTitle.setLabelText("MeteoInfo Class Library Demo - Raster Layer");<br /> <br />         //Add or change the legend in layout<br />         LayoutLegend aLegend;<br />         if (this.mapLayout1.getLegends().size() > 0) {<br />             aLegend = mapLayout1.getLegends().get(0);<br />         } else {<br />             aLegend = mapLayout1.addLegend(650, 100);<br />         }<br />         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);<br />         aLegend.setLegendLayer(aLayer);<br />         mapLayout1.paintGraphics();<br />     }<br />

调试结果如下：









然后是至少需要两个格点数据，风场U、V分量或者风速、风向的Vector（风场矢量）、Barb（风向杆）、Streamline（流场）。
model.ctl/model.dat数据里是U、V分量，所以这里只示例了这种情况，风速、风向的情况也很类似。MeteoDataInfo对象里可以设置setTiimeIndex()和setLevelIndex()来获得不同时次是高度的某变量的格点数据，由于地面风场只有海洋区域有，因此可以将setLevelIndex()设的大些。用getGridData方法获取风场U、V分量的GridData，然后就可以用DrawMeteoData类中的相应方法来创建Vector、Barb和Streamline图层了。其中Vector和Barb图层还可以根据第三个变量来设置图元的颜色，以便显示更丰富的信息。
DrawMeteoData类中创建Vector、Barb和Streamline的方法如下：
Vector:  DrawMeteoData.createGridVectorLayer(GridData uData, GridData vData, GridData gridData,
            LegendScheme aLS, boolean ifColor, String lName, boolean isUV)
Barb:  DrawMeteoData.createGridBarbLayer(GridData uData, GridData vData, GridData gridData,
            LegendScheme aLS, boolean ifColor, String lName, boolean isUV)
Streamline:  DrawMeteoData.createStreamlineLayer(GridData uData, GridData vData, int density, LegendScheme aLS,
            String lName, boolean isUV)
同样的方法加入菜单，具体代码如下：

1.     private void jMenuItem_VectorActionPerformed(java.awt.event.ActionEvent evt) {                                                
   
2.         // TODO add your handling code here:
   
3.         //Create a MeteoDataInfo object
   
4.         MeteoDataInfo aDataInfo = new MeteoDataInfo();
   
5. 
   
6.         //Open GrADS data file
   
7.         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";
   
8.         String fileName = dataDir + "model.ctl";
   
9.         aDataInfo.openGrADSData(fileName);
   
10. 
    
11.         //Get GridData
    
12.         aDataInfo.setTimeIndex(2);
    
13.         aDataInfo.setLevelIndex(3);
    
14.         GridData tData = aDataInfo.getGridData("T");
    
15.         GridData uData = aDataInfo.getGridData("U");
    
16.         GridData vData = aDataInfo.getGridData("V");
    
17. 
    
18.         //Create a legend scheme
    
19.         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(tData, LegendType.GraduatedColor, ShapeTypes.Point);
    
20. 
    
21.         //Create a contour layer
    
22.         VectorLayer aLayer = DrawMeteoData.createGridVectorLayer(uData, vData, tData, aLS, true, "Vector_UV", true);
    
23. 
    
24.         //Add layer
    
25.         layersLegend1.getActiveMapFrame().addLayer(aLayer);
    
26.         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 2);
    
27.         layersLegend1.repaint();
    
28. 
    
29.         //Change title of the layout
    
30.         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);
    
31.         aTitle.setLabelText("MeteoInfo Class Library Demo - Wind Vector Layer");
    
32. 
    
33.         //Add or change the legend in layout
    
34.         LayoutLegend aLegend;
    
35.         if (mapLayout1.getLegends().size() > 0) {
    
36.             aLegend = mapLayout1.getLegends().get(0);
    
37.         } else {
    
38.             aLegend = mapLayout1.addLegend(650, 100);
    
39.         }
    
40.         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);
    
41.         aLegend.setLegendLayer(aLayer);
    
42.         mapLayout1.paintGraphics();
    
43.     }                                                
    
44. 
    
45.     private void jMenuItem_BarbActionPerformed(java.awt.event.ActionEvent evt) {                                               
    
46.         // TODO add your handling code here:
    
47.         //Create a MeteoDataInfo object
    
48.         MeteoDataInfo aDataInfo = new MeteoDataInfo();
    
49. 
    
50.         //Open GrADS data file
    
51.         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";
    
52.         String fileName = dataDir + "model.ctl";
    
53.         aDataInfo.openGrADSData(fileName);
    
54. 
    
55.         //Get GridData
    
56.         aDataInfo.setTimeIndex(2);
    
57.         aDataInfo.setLevelIndex(3);
    
58.         GridData uData = aDataInfo.getGridData("U");
    
59.         GridData vData = aDataInfo.getGridData("V");
    
60. 
    
61.         //Create a legend scheme
    
62.         LegendScheme aLS = LegendManage.createSingleSymbolLegendScheme(ShapeTypes.Point, Color.blue, 10);
    
63. 
    
64.         //Create a barb layer
    
65.         VectorLayer aLayer = DrawMeteoData.createGridBarbLayer(uData, vData, uData, aLS, false, "Barb_UV", true);
    
66. 
    
67.         //Add layer
    
68.         layersLegend1.getActiveMapFrame().addLayer(aLayer);
    
69.         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 2);
    
70.         layersLegend1.repaint();
    
71. 
    
72.         //Change title of the layout
    
73.         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);
    
74.         aTitle.setLabelText("MeteoInfo Class Library Demo - Wind Barb Layer");
    
75.     }                                             
    
76. 
    
77.     private void jMenuItem_StreamLineActionPerformed(java.awt.event.ActionEvent evt) {                                                     
    
78.         // TODO add your handling code here:
    
79.         //Create a MeteoDataInfo object
    
80.         MeteoDataInfo aDataInfo = new MeteoDataInfo();
    
81. 
    
82.         //Open GrADS data file
    
83.         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";
    
84.         String fileName = dataDir + "model.ctl";
    
85.         aDataInfo.openGrADSData(fileName);
    
86. 
    
87.         //Get GridData
    
88.         aDataInfo.setTimeIndex(2);
    
89.         aDataInfo.setLevelIndex(3);
    
90.         GridData uData = aDataInfo.getGridData("U");
    
91.         GridData vData = aDataInfo.getGridData("V");
    
92. 
    
93.         //Create a legend scheme
    
94.         LegendScheme aLS = LegendManage.createSingleSymbolLegendScheme(ShapeTypes.Polyline, Color.blue, 1);
    
95. 
    
96.         //Create a contour layer
    
97.         VectorLayer aLayer = DrawMeteoData.createStreamlineLayer(uData, vData, 4, aLS, "Streamline_UV", true);
    
98. 
    
99.         //Add layer
    
100.         layersLegend1.getActiveMapFrame().addLayer(aLayer);
     
101.         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 2);
     
102.         layersLegend1.repaint();
     
103. 
     
104.         //Change title of the layout
     
105.         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);
     
106.         aTitle.setLabelText("MeteoInfo Class Library Demo - Wind streamline Layer");
     
107.     }
     

    private void jMenuItem_VectorActionPerformed(java.awt.event.ActionEvent evt) {                                                 <br />         // TODO add your handling code here:<br />         //Create a MeteoDataInfo object<br />         MeteoDataInfo aDataInfo = new MeteoDataInfo();<br /> <br />         //Open GrADS data file<br />         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";<br />         String fileName = dataDir + "model.ctl";<br />         aDataInfo.openGrADSData(fileName);<br /> <br />         //Get GridData<br />         aDataInfo.setTimeIndex(2);<br />         aDataInfo.setLevelIndex(3);<br />         GridData tData = aDataInfo.getGridData("T");<br />         GridData uData = aDataInfo.getGridData("U");<br />         GridData vData = aDataInfo.getGridData("V");<br /> <br />         //Create a legend scheme<br />         LegendScheme aLS = LegendManage.createLegendSchemeFromGridData(tData, LegendType.GraduatedColor, ShapeTypes.Point);<br /> <br />         //Create a contour layer<br />         VectorLayer aLayer = DrawMeteoData.createGridVectorLayer(uData, vData, tData, aLS, true, "Vector_UV", true);<br /> <br />         //Add layer<br />         layersLegend1.getActiveMapFrame().addLayer(aLayer);<br />         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 2);<br />         layersLegend1.repaint();<br /> <br />         //Change title of the layout<br />         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);<br />         aTitle.setLabelText("MeteoInfo Class Library Demo - Wind Vector Layer");<br /> <br />         //Add or change the legend in layout<br />         LayoutLegend aLegend;<br />         if (mapLayout1.getLegends().size() > 0) {<br />             aLegend = mapLayout1.getLegends().get(0);<br />         } else {<br />             aLegend = mapLayout1.addLegend(650, 100);<br />         }<br />         aLegend.setLegendStyle(LegendStyles.Bar_Vertical);<br />         aLegend.setLegendLayer(aLayer);<br />         mapLayout1.paintGraphics();<br />     }                                                <br /> <br />     private void jMenuItem_BarbActionPerformed(java.awt.event.ActionEvent evt) {                                               <br />         // TODO add your handling code here:<br />         //Create a MeteoDataInfo object<br />         MeteoDataInfo aDataInfo = new MeteoDataInfo();<br /> <br />         //Open GrADS data file<br />         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";<br />         String fileName = dataDir + "model.ctl";<br />         aDataInfo.openGrADSData(fileName);<br /> <br />         //Get GridData<br />         aDataInfo.setTimeIndex(2);<br />         aDataInfo.setLevelIndex(3);<br />         GridData uData = aDataInfo.getGridData("U");<br />         GridData vData = aDataInfo.getGridData("V");<br /> <br />         //Create a legend scheme<br />         LegendScheme aLS = LegendManage.createSingleSymbolLegendScheme(ShapeTypes.Point, Color.blue, 10);<br /> <br />         //Create a barb layer<br />         VectorLayer aLayer = DrawMeteoData.createGridBarbLayer(uData, vData, uData, aLS, false, "Barb_UV", true);<br /> <br />         //Add layer<br />         layersLegend1.getActiveMapFrame().addLayer(aLayer);<br />         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 2);<br />         layersLegend1.repaint();<br /> <br />         //Change title of the layout<br />         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);<br />         aTitle.setLabelText("MeteoInfo Class Library Demo - Wind Barb Layer");<br />     }                                              <br /> <br />     private void jMenuItem_StreamLineActionPerformed(java.awt.event.ActionEvent evt) {                                                     <br />         // TODO add your handling code here:<br />         //Create a MeteoDataInfo object<br />         MeteoDataInfo aDataInfo = new MeteoDataInfo();<br /> <br />         //Open GrADS data file<br />         String dataDir = "E:\\MeteoInfo\\sample\\GrADS\\";<br />         String fileName = dataDir + "model.ctl";<br />         aDataInfo.openGrADSData(fileName);<br /> <br />         //Get GridData<br />         aDataInfo.setTimeIndex(2);<br />         aDataInfo.setLevelIndex(3);<br />         GridData uData = aDataInfo.getGridData("U");<br />         GridData vData = aDataInfo.getGridData("V");<br /> <br />         //Create a legend scheme<br />         LegendScheme aLS = LegendManage.createSingleSymbolLegendScheme(ShapeTypes.Polyline, Color.blue, 1);<br /> <br />         //Create a contour layer<br />         VectorLayer aLayer = DrawMeteoData.createStreamlineLayer(uData, vData, 4, aLS, "Streamline_UV", true);<br /> <br />         //Add layer<br />         layersLegend1.getActiveMapFrame().addLayer(aLayer);<br />         layersLegend1.getActiveMapFrame().moveLayer(aLayer.getHandle(), 2);<br />         layersLegend1.repaint();<br /> <br />         //Change title of the layout<br />         LayoutGraphic aTitle = mapLayout1.getTexts().get(0);<br />         aTitle.setLabelText("MeteoInfo Class Library Demo - Wind streamline Layer");<br />     }<br />

调试结果如下：

Aires

完全不懂的飘过。。。

river

Aires 发表于 2013-10-30 21:12

                               
登录/注册后可看大图

完全不懂的飘过。。。

版主，你真幽默

刘小宝

本科生学习中

刘小宝

请问，我openmicaps数据后，应该用哪个方法get？

MeteoInfo

刘小宝 发表于 2014-7-18 22:11
请问，我openmicaps数据后，应该用哪个方法get？

MICAPS数据又分很多类（具体请参考相关资料），如果是格点数据就用这个帖子里讲的方法，如果是站点数据就按照站点数据教程贴去做。

刘小宝

MeteoInfo 发表于 2014-7-19 12:58
MICAPS数据又分很多类（具体请参考相关资料），如果是格点数据就用这个帖子里讲的方法，如果是站点数据就 ...

感谢指导，学习中

刘小宝

MeteoInfo 发表于 2014-7-19 12:58
MICAPS数据又分很多类（具体请参考相关资料），如果是格点数据就用这个帖子里讲的方法，如果是站点数据就 ...

王老师，还有个小问题，我看您的程序中打开MICAPS站点数据后可以画出等值线，站点数据也可以画等值线吗？

MeteoInfo

刘小宝 发表于 2014-7-19 16:33
王老师，还有个小问题，我看您的程序中打开MICAPS站点数据后可以画出等值线，站点数据也可以画等值线吗？

站点数据先插值为格点数据就可以做等值线了

刘小宝

MeteoInfo 发表于 2014-7-19 17:22
站点数据先插值为格点数据就可以做等值线了

恩恩，很强大，不断学习中