C# 基于AE的GIS二次开发实例-----台风信息系统

男娘i 2023-02-21 04:58 33阅读 0赞

# **设计任务** #

课程设计的主要任务是利用GIS公共平台提供的二次开发环境开发一套“台风GIS软件”，在遵循国家台风编码的基础上，实现台风的运动轨迹可视化,以及台风经过区域的经济损失评估。

1．获取台风的各个时刻的空间位置关系；

2．建立空间数据及属性数据库；

3．建立空间数据的查询系统；

4．实现空间分析的基本功能（包括缓冲区分析、叠加分析等）；

5．提交书面报告（数据库设计、软件设计流程和软件使用说明等）和台风GIS系统软件运行程序及原始程序代码等。

# **空间数据库设计与建库** #

1.  地图分层

<table> 
 <tbody> 
 <tr> 
 <td> 素类 </td> 
 <td> 描述 </td> 
 </tr> 
 <tr> 
 <td> 面要素 </td> 
 <td> 省级面要素 </td> 
 </tr> 
 <tr> 
 <td> 线要素 </td> 
 <td> 台风路径 </td> 
 </tr> 
 <tr> 
 <td> 点要素 </td> 
 <td> 台风某时刻位置 </td> 
 </tr> 
 <tr> 
 <td> 台风登陆点 </td> 
 </tr> 
 <tr> 
 <td> 省会城市 </td> 
 </tr> 
 </tbody> 
</table>

1.  属性库设计

地价信息表(tf\_price)

<table> 
 <tbody> 
 <tr> 
 <td> 属性名 </td> 
 <td> 字段名称 </td> 
 <td> 类型 </td> 
 <td> 是否为空 </td> 
 <td> 备注 </td> 
 </tr> 
 <tr> 
 <td> 省份名称 </td> 
 <td> chian_name </td> 
 <td> Char(10) </td> 
 <td> Not null </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 地价 </td> 
 <td> price </td> 
 <td> Char(20) </td> 
 <td> Not null </td> 
 <td> 每平米地价 </td> 
 </tr> 
 </tbody> 
</table>

台风路径(tf\_name)

<table> 
 <tbody> 
 <tr> 
 <td> 属性名 </td> 
 <td> 字段名称 </td> 
 <td> 类型 </td> 
 <td> 是否为空 </td> 
 <td> 备注 </td> 
 </tr> 
 <tr> 
 <td> 台风名称 </td> 
 <td> tf_name </td> 
 <td> Char(10) </td> 
 <td> Not null </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 路径长度 </td> 
 <td> SHAPE_Length </td> 
 <td> Char(17) </td> 
 <td> Not null </td> 
 <td> </td> 
 </tr> 
 </tbody> 
</table>

台风信息表(tf\_geo)

<table> 
 <tbody> 
 <tr> 
 <td> 属性名 </td> 
 <td> 字段名称 </td> 
 <td> 类型 </td> 
 <td> 是否为空 </td> 
 <td> 备注 </td> 
 </tr> 
 <tr> 
 <td> 台风编号 </td> 
 <td> tf_number </td> 
 <td> Char(10) </td> 
 <td> Not null </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 台风名 </td> 
 <td> tf_name </td> 
 <td> Char(10) </td> 
 <td> Not null </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 时间 </td> 
 <td> tf_time </td> 
 <td> Char(20) </td> 
 <td> Not null </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 经度 </td> 
 <td> tf_lon </td> 
 <td> Char(20) </td> 
 <td> Not null </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 纬度 </td> 
 <td> tf_lat </td> 
 <td> Char(20) </td> 
 <td> </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 中心压强 </td> 
 <td> tf_central_pressure </td> 
 <td> Char(20) </td> 
 <td> </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 台风风速 </td> 
 <td> tf_wind </td> 
 <td> Char(20) </td> 
 <td> </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 台风风向 </td> 
 <td> tf_direction </td> 
 <td> Char(20) </td> 
 <td> </td> 
 <td> </td> 
 </tr> 
 <tr> 
 <td> 未来移速 </td> 
 <td> tf_feature_speed </td> 
 <td> Char(20) </td> 
 <td> </td> 
 <td> </td> 
 </tr> 
 </tbody> 
</table>

台风登陆信息表(tf\_loacl)

系统功能设计

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwOTUzMzkz_size_16_color_FFFFFF_t_70][]

# **系统界面设计** #

1.  主界面

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操作界面

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwOTUzMzkz_size_16_color_FFFFFF_t_70 3][]

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地图数字成果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwOTUzMzkz_size_16_color_FFFFFF_t_70 5][]

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部分代码:

1.按名称进行要素查询
 /// <summary>
 /// 名称查询
 /// </summary>
 /// <param name="mapControl"></param>
 /// <param name="index">图层</param>
 /// <param name="field">字段</param>
 /// <param name="value">查询值</param>
 public static void SelectByName(IMapControlDefault mapControl,string layerName, string field, string value)
 {
 try
 {
 ClearSelection(mapControl);//清除选择
 string selectName = value.Trim();
 ILayer layer = getFeatureLayer(mapControl, layerName);//获取对应图层
 IFeatureLayer featureLayer = layer as IFeatureLayer;
 IFeatureClass featureClass = featureLayer.FeatureClass;
 IQueryFilter queryFilter = new QueryFilterClass();//查询对象实例化
 IFeatureCursor featureCursor;
 IFeature feature = null;
 string str = field + " = '" + selectName+"'" ;//创建查询语句
 queryFilter.WhereClause = str;
 featureCursor = featureClass.Search(queryFilter, true);//进行查询操作
 feature = featureCursor.NextFeature();//下一个得到查询要素
 if (null != feature)
 {
 mapControl.Map.SelectFeature(layer, feature);//地图高亮显示
 mapControl.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);//刷新
 }
 }
 catch (System.Exception ex)
 {
 MessageBoxEX.Show("依据名称查询选中要素失败！"+ex);
 }
 }
 2.查询指定条件下的属性表信息显示
 /// <summary>
 /// 查询指定条件下的属性表信息显示,默认字段去除
 /// </summary>
 /// <param name="mapControl">map控件</param>
 /// <param name="index">图层</param>
 /// <param name="field">属性值</param>
 /// <param name="value">条件值</param>
 /// <returns>DataTable</returns>
 public static DataTable FeatureTableByName(IMapControlDefault mapControl, string lyerName, string field, string value)
 {
 DataTable pTable = new DataTable();//建立一个table
 string selectName = value.Trim();//查询条件
 try
 {
 IFeatureLayer featureLayer = getFeatureLayer(mapControl, lyerName);//获取图层
 IFields pFields = featureLayer.FeatureClass.Fields;//获取要素类字段
 int log = -1;
 for (int i = 0; i < pFields.FieldCount; i++) //FieldCount字段集合中的字段数
 {
 pTable.Columns.Add(pFields.get_Field(i).AliasName);//datatable添加字段
 if (pFields.get_Field(i).AliasName.ToString() == "SHAPE")
 { log = i; }//记录“Shape”行。
 }
 //创建一个新的查询过滤器
 IFeatureClass featureClass = featureLayer.FeatureClass;
 IQueryFilter queryFilter = new QueryFilterClass();//查询
 IFeatureCursor featureCursor;
 IFeature feature = default(IFeature);
 string str = field + " = '" + selectName + "'";//查询语句
 queryFilter.WhereClause = str;
 featureCursor = featureClass.Search(queryFilter, true);//查询执行
 feature = featureCursor.NextFeature();//获取查询第一个要素
 while (feature != null)
 {
 DataRow newRow = pTable.NewRow();
 string featapye = feature.Shape.GeometryType.ToString();//获取要素类类型名
 for (int i = 0; i < pFields.FieldCount; i++)
 {
 if (log != i)
 {
 newRow[i] = feature.get_Value(i).ToString();//每行要素赋值给datatable
 }
 else
 {
 newRow[i] = featapye;//要素类型赋值
 }
 }
 pTable.Rows.Add(newRow);
 feature = featureCursor.NextFeature();//下一个要素
 }
 ShowByFilter(mapControl, featureLayer, str);//只显示满足条件的要素
 }
 catch (System.Exception ex)
 {
 MessageBoxEX.Show("查询指定条件下的属性表信息失败！" + ex.Message);
 }
 return pTable;
 }
 3.基于GP工具的缓冲区分析
 /// <summary>
 /// 单个缓冲区分析
 /// </summary>
 /// <param name="mapControl">map控件</param>
 /// <param name="name">文件名</param>
 /// <param name="distances">缓冲半径</param>
 public static void Buffer(IMapControlDefault mapControl,string distances,string name)
 {
 string outPath = appPath+ ""+ name + distances + "_Buffer.shp";
 IFeatureLayer featureLayer = getFeatureLayer(mapControl, "台风路径");
 Geoprocessor gp = new Geoprocessor(); //初始化Geoprocessor
 gp.OverwriteOutput = true; //允许运算结果覆盖现有文件
 try
 {
 ESRI.ArcGIS.AnalysisTools.Buffer pBuffer = new ESRI.ArcGIS.AnalysisTools.Buffer(); //定义Buffer工具
 pBuffer.in_features = featureLayer; //输入对象，既可是IFeatureLayer对象，也可是完整文件路径如“D://data.shp”
 pBuffer.out_feature_class = outPath; //输出对象，一般是包含输出文件名的完整文件路径
 
 //设置缓冲区的大小，即可是带单位的具体数值，如0.1 Decimal Degrees；也可是输入图层中的某个字段，如“BufferLeng”
 pBuffer.buffer_distance_or_field = "" + distances + " Kilometers"; //缓冲区参数
 pBuffer.dissolve_option = "NONE"; //支持融合缓冲区重叠交叉部分
 gp.Execute(pBuffer, null); //执行缓冲区分析
 //添加结果到窗口
 string pFolder = System.IO.Path.GetDirectoryName(outPath); //得到字符串中文件夹位置
 string pFileName = System.IO.Path.GetFileName(outPath); //得到字符串中文件名字
 mapControl.AddShapeFile(pFolder, pFileName); //往地图控件里添加文件
 mapControl.ActiveView.Refresh(); //激活窗口刷新
 }
 catch (Exception ex)
 {
 MessageBoxEX.Show("警告", "缓冲分析失败!" + ex.ToString());
 }
 }
 4.唯一值生成渲染色带
 /// <summary>
 /// 构建色带
 /// </summary>
 /// <param name="size">色带个数</param>
 /// <returns></returns>
 private static IAlgorithmicColorRamp GetColorRgb(int size)
 {
 IColor fromColor = null, toColor = null;
 fromColor = ConvertNETColorToAEColor(Color.Yellow);//起始颜色
 toColor = ConvertNETColorToAEColor(Color.Red);//终止颜色
 IAlgorithmicColorRamp algCR = new AlgorithmicColorRampClass();
 algCR.Size = size;//生成渲染个数
 bool nFlag;
 //设置色带生成算法
 algCR.Algorithm = esriColorRampAlgorithm.esriLabLChAlgorithm;
 algCR.FromColor = fromColor; algCR.ToColor = toColor;
 algCR.CreateRamp(out nFlag);
 return algCR;
 }
 
 /// <summary>
 /// 唯一值渲染图层
 /// </summary>
 /// <param name="pFeatureLayer">矢量图层</param>
 /// <param name="pUniqueFieldName">唯一值字段</param>
 public static void UniqueValueRender(IMapControlDefault mapControl,string layerName, string pUniqueFieldName)
 {
 IFeatureLayer pFeatureLayer = getFeatureLayer(mapControl, layerName);//获取要素图层
 IGeoFeatureLayer pGeoLayer = pFeatureLayer as IGeoFeatureLayer;
 if (pGeoLayer == null) return;
 ITable pTable = pGeoLayer.FeatureClass as ITable;//得到属性表
 ICursor pCursor;
 IQueryFilter pQueryFilter = new QueryFilter();//查询
 pQueryFilter.AddField(pUniqueFieldName);
 pCursor = pTable.Search(pQueryFilter, true);//获取字段
 IEnumerator pEnumreator;
 
 //获取字段中各要素属性唯一值
 IDataStatistics pDataStatistics = new DataStatisticsClass();
 pDataStatistics.Field = pUniqueFieldName;//获取统计字段
 pDataStatistics.Cursor = pCursor;
 pEnumreator = pDataStatistics.UniqueValues;
 int fieldcount = pDataStatistics.UniqueValueCount;//唯一值个数，以此确定颜色带范围
 
 IUniqueValueRenderer pUniqueValueR = new UniqueValueRendererClass();
 pUniqueValueR.FieldCount = 1;//单值渲染
 pUniqueValueR.set_Field(0, pUniqueFieldName);//渲染字段
 IEnumColors pEnumColor = GetColorRgb(fieldcount).Colors;
 pEnumColor.Reset();
 
 while (pEnumreator.MoveNext())
 {
 string value = pEnumreator.Current.ToString();
 if (value != null)
 {
 IColor pColor = pEnumColor.Next();
 ISymbol pSymbol = GetDefaultSymbol(pFeatureLayer.FeatureClass.ShapeType, pColor);//获取默认符号
 pUniqueValueR.AddValue(value, pUniqueFieldName, pSymbol);
 }
 }
 pGeoLayer.Renderer = pUniqueValueR as IFeatureRenderer;
 }

数据是中国天气网([台风][Link 1])爬的

地图是自己数字化的!!!!!!

界面自己设计的

代码自己敲的,

不会的全百度的!!!!!

OVER.....................

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[Link 1]: http://typhoon.weather.com.cn/