C# ArcEngine创建内存图层(转载)
#region 在内存中创建图层
/// <summary>
/// 在内存中创建图层
/// </summary>
/// <param name="DataSetName">数据集名称</param>
/// <param name="AliaseName">别名</param>
/// <param name="SpatialRef">空间参考</param>
/// <param name="GeometryType">几何类型</param>
/// <param name="PropertyFields">属性字段集合</param>
/// <returns>IfeatureLayer</returns>
public static IFeatureLayer CreateFeatureLayerInmemeory(string DataSetName, string AliaseName, ISpatialReference SpatialRef, esriGeometryType GeometryType, IFields PropertyFields)
{
IWorkspaceFactory workspaceFactory = new InMemoryWorkspaceFactoryClass();
ESRI.ArcGIS.Geodatabase.IWorkspaceName workspaceName = workspaceFactory.Create("", "MyWorkspace", null, 0);
ESRI.ArcGIS.esriSystem.IName name = (IName)workspaceName;
ESRI.ArcGIS.Geodatabase.IWorkspace inmemWor = (IWorkspace)name.Open();
IField oField = new FieldClass();
IFields oFields = new FieldsClass();
IFieldsEdit oFieldsEdit = null;
IFieldEdit oFieldEdit = null;
IFeatureClass oFeatureClass = null;
IFeatureLayer oFeatureLayer = null;
try
{
oFieldsEdit = oFields as IFieldsEdit;
oFieldEdit = oField as IFieldEdit;
for (int i = 0; i < PropertyFields.FieldCount; i++)
{
oFieldsEdit.AddField(PropertyFields.get_Field(i));
}
IGeometryDef geometryDef = new GeometryDefClass();
IGeometryDefEdit geometryDefEdit = (IGeometryDefEdit)geometryDef;
geometryDefEdit.AvgNumPoints_2 = 5;
geometryDefEdit.GeometryType_2 = GeometryType;
geometryDefEdit.GridCount_2 = 1;
geometryDefEdit.HasM_2 = false;
geometryDefEdit.HasZ_2 = false;
geometryDefEdit.SpatialReference_2 = SpatialRef;
geometryDefEdit.SpatialReference_2 = new UnknownCoordinateSystemClass();//没有这一句就报错,说尝试读取或写入受保护的内存。
geometryDefEdit.SpatialReference.SetDomain(-200, 200, -200, 200);//没有这句就抛异常来自HRESULT:0x8004120E。
oFieldEdit.Name_2 = "SHAPE";
oFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
oFieldEdit.GeometryDef_2 = geometryDef;
oFieldEdit.IsNullable_2 = true;
oFieldEdit.Required_2 = true;
oFieldsEdit.AddField(oField);
oFeatureClass = (inmemWor as IFeatureWorkspace).CreateFeatureClass(DataSetName, oFields, null, null, esriFeatureType.esriFTSimple, "SHAPE", "");
(oFeatureClass as IDataset).BrowseName = DataSetName;
oFeatureLayer = new FeatureLayerClass();
oFeatureLayer.Name = AliaseName;
oFeatureLayer.FeatureClass = oFeatureClass;
}
catch
{
}
return oFeatureLayer;
}
#endregion
下面就是根据采集的坐标点创建点内存图层:
IFeatureLayer pFeatureLayer = new FeatureLayerClass();
IFieldsEdit curFileds = new FieldsClass();
IFieldEdit curField = new FieldClass();
curField = new FieldClass();
curField.Name_2 = "名称";
curField.Type_2 = esriFieldType.esriFieldTypeString;
curFileds.AddField(curField);
curField = new FieldClass();
curField.Name_2 = "经度";
curField.Type_2 = esriFieldType.esriFieldTypeDouble;
curFileds.AddField(curField);
curField = new FieldClass();
curField.Name_2 = "纬度";
curField.Type_2 = esriFieldType.esriFieldTypeDouble;
curFileds.AddField(curField);
pFeatureLayer = CreateFeatureLayerInmemeory("Position", "采集点", new UnknownCoordinateSystemClass(), esriGeometryType.esriGeometryPoint, curFileds as IFields);
p_axMap.AddLayer(pFeatureLayer as ILayer);
IFeatureCursor FeatureCursor;
IFeature pFeature;
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
pFeature = pFeatureClass.CreateFeature();
IQueryFilter pQueryFilter = new QueryFilterClass();
FeatureCursor = pFeatureClass.Search(pQueryFilter, true);
pQueryFilter.WhereClause = null;
pFeature = FeatureCursor.NextFeature();
pFeature.set_Value(0, str1);
pFeature.set_Value(1, x);
pFeature.set_Value(2, y);
IEnvelope pEnvelope = new EnvelopeClass();
//如果双击的对象是一个点,这样子才能够缩放到该点
pEnvelope.PutCoords(0, 0, 0.3, 0.3);//确定envelope大小
IPoint xpoint = new PointClass();
xpoint.PutCoords(x, y);
pFeature.Shape = xpoint;
pFeature.Store();
//设置颜色
IRgbColor pcolor = new RgbColorClass();
pcolor.Red = 255;
pcolor.Green = 0;
pcolor.Blue = 0;
//设置图形
ISimpleMarkerSymbol psm = new SimpleMarkerSymbolClass();
psm.Style = esriSimpleMarkerStyle.esriSMSCircle;
psm.Size = 10;
psm.Color = pcolor;
(pFeatureLayer as IFeatureSelection).SelectionSymbol = (ISymbol)psm;
(pFeatureLayer as IFeatureSelection).SetSelectionSymbol = true;
(pFeatureLayer as IFeatureSelection).SelectionSet.Add(pFeature.OID);
pEnvelope.CenterAt(xpoint);//地图缩放到该点
p_axMap.Extent = pEnvelope;
p_axMap.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, pFeatureLayer, null);
p_axMap.ActiveView.ScreenDisplay.UpdateWindow();
C# ArcEngine创建内存图层(转载)的更多相关文章
- AE开发使用内存图层
AE开发中,有时需要从磁盘中读取一些文件信息如坐标点转为图层并进行分析,此过程并不需要坐标点入库之类的操作,就可以创建一个内存图层解决问题.创建内存图层需要用到InMemoryWorkspaceFac ...
- ArcEngine 创建线要素图层
在创建要素图层的时候,默认的几何类型是Polygon: Dim objectClassDescription As IObjectClassDescription = New FeatureClass ...
- ArcEngine临时数据存储 创建内存工作空间
参考网址,这里 工作中有时候需要使用临时数据,以前都是创建一个默认的shapefile或者gdb,今天发现esri官方帮助文档给出了一个方法,可以创建内存工作空间,代码如下: public stati ...
- 使用ZwMapViewOfSection创建内存映射文件总结
标 题: [原创]使用ZwMapViewOfSection创建内存映射文件总结 作 者: 小覃 时 间: 2012-06-15,02:28:36 链 接: http://bbs.pediy.com/s ...
- Java Object 对象创建的方式 [ 转载 ]
Java Object 对象创建的方式 [ 转载 ] @author http://blog.csdn.net/mhmyqn/article/details/7943411 显式创建 有4种显式地创建 ...
- MAPINFO中利用GridMaker工具创建栅格图层
在工作中需要使用栅格地图,以往都是由研发人员来创建,今天偶然发现Mapinfo中有GridMaker这样一个工具,结合网络搜索自己试了一下,居然做成功了,这里把步骤记录下来,方便以后查看. 1.首先在 ...
- 转:内存区划分、内存分配、常量存储区、堆、栈、自由存储区、全局区[C++][内存管理][转载]
内存区划分.内存分配.常量存储区.堆.栈.自由存储区.全局区[C++][内存管理][转载] 一. 在c中分为这几个存储区1.栈 - 由编译器自动分配释放2.堆 - 一般由程序员分配释放,若程序员不释放 ...
- [转] arcgis Engine创建shp图层
小生 原文 arcgis Engine创建shp图层 以创建点图层为例.首先要得到保存文件的地址. SaveFileDialog saveFileDialog = new SaveFileDialog ...
- ArcGIS 网络分析[8.6] 资料6 创建网络分析图层及进行路径分析
基于上篇所介绍的内容,就说说如何利用访问到的网络数据集,在Map中添加网络数据集图层.创建网络分析图层中的路径图层,并执行路径分析示例.
随机推荐
- [算法] Manacher算法线性复杂度内求解最长回文子串
参考:http://www.felix021.com/blog/read.php?2040 以上参考的原文写得很好,解析的非常清楚.以下用我自己的理解,对关键部分算法进行简单的描述: 回文的判断需要完 ...
- (一)openwrt源码目录概述
前言 这段时间总是在和openwrt打交道,之前也零零散散地写过一点,还是希望能有点体系.还记得我刚看到源代码的时候,觉得无从下手.我想从Makefile的整个执行过程入手,搞清楚编译源代码的几个小时 ...
- hdu 1003 Max sum(简单DP)
Max Sum Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Problem ...
- Android中Spanner获取选中内容和选中位置,根据位置选择对象
作为一名菜鸟,关于spanner获取选中的内容文字代码,网上后很多 但是根据给出的位置来自动选择对象,这个代码一直没找到 后来找人问了问,才知道就一句话的事,特意在这里记录下 array.xml X ...
- Flume practices and sqoop hive 2 oracle
#receive the file flume-ng agent --conf conf --conf-file conf1.conf --name a1 flume-ng agent --conf ...
- ORA-01034: ORACLE not available如何解决
一个小小的问题,让我折腾了一个上午,下午三点彻底解决了,分享一个给大家解决方法,尽管在测试服务器上,但是经验是值得总结和分享的. ERROR:ORA-01034: ORACLE not availab ...
- 怎么学习计算电磁学【QUORA】
链接 There are several resources. But it depends on what you actually want to learn...Let me explain: ...
- noip2014提高组day2二题题解-rLq
(又是昨天的作业……本题写于昨天) (这破题都做这么久,我是不是吃枣药丸……) (好吧这是一道图论题呢) 本题地址:http://www.luogu.org/problem/show?pid=2296 ...
- uva 1605 building for UN ——yhx
The United Nations has decided to build a new headquarters in Saint Petersburg, Russia. It will have ...
- Spring 4.1+ 的 JSONP使用
如今的巨石应用已经越来越不行了,很多互联网在后期都会在用分布式的架构 那么在页面上不同的服务调用不同域名下的json是有问题的 (跨域:不同域名,相同域名但是不同端口) JavaScript规范中提到 ...