GIS与人工智能是未来GIS的归宿

摘要： http://download.csdn.net/detail/kisstome88/3639724 阅读全文

摘要： protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e){#region 绑定ItemTemplate的方法if (e.Row.RowType == DataControlRowType.DataRow){ DropDownList ddl = (DropDownList)e.Row.FindControl("DropDownList1");List<string> source = new List<string>();source.Add(" 阅读全文

摘要： Tutorial:EXT简介 http://extjs.com/learn/Tutorial:Introduction_to_Ext_2.0_(Chinese) Tutorial:Ext 2简述 http://extjs.com/learn/Ext_2_Overview_(Chinese) Tutorial:EXT新手建议 http://extjs.com/learn/Tutorial:EXT新手建议 Tutorial:怎么轻松地进入Ext的世界? http://extjs.com/learn/Tutorial:Playing_With_Ext_The_Easy_Way_(Chinese) T 阅读全文

摘要： IFields pFields = new FieldsClass();IFieldsEdit pFieldsEdit = (IFieldsEdit)pFields; IGeometryDef pGometryDef = new GeometryDefClass();IGeometryDefEdit pGeometryDefEdit = (IGeometryDefEdit)pGometryDef;{pGeometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolygon; pGeometryDefEdit.HasM_2 = f 阅读全文

摘要： 地面分辨率（GroundResolution）　　地面分辨率是以一个像素(pixel)代表的地面尺寸(米)。以微软Bing Maps为例，当Level为1时，图片大小为512*512（4个Tile），那么赤道空间分辨率为：赤道周长/512。其他纬度的空间分辨率则为纬度圈长度/512，极端的北极则为0。Level为2时，赤道的空间分辨率为赤道周长/1024，其他纬度为纬度圈长度1024。很明显，GroundResolution取决于两个参数，缩放级别Level和纬度latitude，Level决定像素的多少，latitude决定地面距离的长短。　　地面分辨率的公式为，单位：米/像素：　　grou 阅读全文

摘要： The Product License has not been initialized报错原因：未初始化许可证解决方法：IAoInitialize m_AoInitialize = new AoInitialize(); m_AoInitialize.Initialize(esriLicenseProductCode.esriLicenseProductCodeArcInfo); 阅读全文

摘要： Rectangle rectangle = e.ClipRectangle;BufferedGraphicsContext GraphicsContext = BufferedGraphicsManager.Current;BufferedGraphics myBuffer = GraphicsContext.Allocate(e.Graphics, e.ClipRectangle);Graphi... 阅读全文

摘要： privatedouble getRasterCellValue(IPoint pPoint, IRasterLayer pRasterLayer) { IIdentify pIdentify = (IIdentify)pRasterLayer; IArray pArray = pIdentify.Identify(pPoint); IRasterIdentifyObj2 pRasterIde... 阅读全文

摘要： C#在线程中调用控件的方法public delegate void CallSetLogin();private void btnOK_Click(object sender, EventArgs e){Thread pThread = new Thread(new ThreadStart(Login)); pThread.Start();}private void Login(){SetLogi... 阅读全文

摘要： 问题：在用PL/SQL进行登录时，出现：”ora-01045 :user system lacks create session privilege; logon denied”。原因：没有权限在Google找到这段的说明：What does “ORA-01045: user USERNAME lacks CREATE SESSION privilege;log... 阅读全文