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如何在ArcGIS中读取文本文件
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>新手：老师要求做一段VBA程序。用于读取文本格式存储的数据文件，类似于测量记录手薄中的数据，将每一条记录生成点图形，并存入新建的要素类——离散点（lsd）。并在ArcMAP中显示。</P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> </P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>示例代码如下：</P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 13.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><FONT face="Times New Roman">Private Sub UIButtonControl1_Click() <p></p></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 14.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><FONT face="Times New Roman"> Dim pDataset As IDataset <p></p></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><FONT face="Times New Roman"> Dim pFeatcls As IFeatureClass <p></p></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 14.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><FONT face="Times New Roman"> Dim pFeatLayer As IFeatureLayer <p></p></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><FONT face="Times New Roman"> Dim pDoc As IMxDocument <p></p></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><FONT face="Times New Roman"> Dim pMap As IMap <p></p></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 9.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><FONT face="Times New Roman">Set pDoc = ThisDocument <p></p></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set pMap = pDoc.FocusMap </P> <DIV class=Section1> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>Set pFeatLayer = pMap.Layer(0) '当有多层数据时，要搜索所有数据层，根据名称找<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 14.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>到要添加的数据层<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set pFeatcls = pFeatLayer.FeatureClass <p></p></P></DIV> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set pDataset = pFeatcls <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><p> </p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 20.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim pEditor As IEditor '引用编辑对象，对要素进行编辑<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim pID As New UID <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> pID = "esricore.Editor" <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set pEditor = Application.FindExtensionByCLSID(pID) <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><p> </p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 20.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> pEditor.StartEditing pDataset.Workspace '开始编辑操作，相当于在 Editor 工具条中按 start editing <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><p> </p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 10.65pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left><p> </p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 10pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim pFeature As IFeature <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> '打开数据文件，读取数据；<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim FileObj As FileSystemObject <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim TxtFile As TextStream <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set FileObj = New FileSystemObject <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set TxtFile = FileObj.OpenTextFile("E:\实习\newcampus.txt", ForReading, False, TristateFalse) <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim strline As String <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim pX, pY, pZ As Double <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim pPoint As IPoint '定义点接口<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Dim pZAware As IZAware '定义点 Z 值接口<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Do '循环读取文件数据<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set pPoint = New Point <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set pZAware = pPoint <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> pZAware.ZAware = True <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> strline = TxtFile.ReadLine <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> pX = CDbl(Mid(strline, 1, 8)) <B><U>'</U></B>具体读取方式与文件存储格式相关，需要编程实现<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> pY = CDbl(Mid(strline, 10, 8)) <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 59.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>pZ = CDbl(Mid(strline, 19, 5)) <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 59.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>pPoint.X = pX: pPoint.Y = pY: pPoint.Z = pZ <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set pFeature = pFeatcls.CreateFeature <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> Set pFeature.Shape = pPoint <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> pFeature.Store '保存 pfeature <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> <st1:place w:st="on">Loop</st1:place> Until (TxtFile.AtEndOfStream) <p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 15.3pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> TxtFile.Close '关闭文件<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 37.3pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left> pEditor.StopEditing True '保存编辑<p></p></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>END SUB</P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 16pt; TEXT-ALIGN: left; mso-line-height-rule: exactly; mso-layout-grid-align: none" align=left>但我试了几次，总是报错，不知道什么原因。请高手指教。</P> |
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