请大家帮忙看看我的代码

<P><U><FONT color=#810081>该程序要实现的功能是：</FONT></U></P>
<P><U><FONT color=#810081>子任务1、访问pp要素类（rain.mdb/pp）并将其添加到当前地图（Map）中</FONT></U></P>
<P><U><FONT color=#810081>子任务2、对pp里面的属性字段"p19791719"（及IDW插值里面的“Z”值）进行</FONT></U></P>
<P><U><FONT color=#810081>IDW插值</FONT></U></P>
<P><U><FONT color=#810081>目前我已经实现了子任务1，代码如下：</FONT></U></P>
<P><U><FONT color=#810081>    Dim pWorkspaceFactory As IWorkspaceFactory<BR>    'Dim pWS As IWorkspace<BR>    Dim pFeatureWorkspace As IFeatureWorkspace<BR>    Dim pFeatureClass As IFeatureClass<BR>    Set pWorkspaceFactory = New AccessWorkspaceFactory<BR>    'Set pWS = pWorkspaceFactory.OpenFromFile("D:\temp\rain.mdb", 0)<BR>    Set pFeatureWorkspace = pWorkspaceFactory.OpenFromFile</FONT></U></P>
<P><U><FONT color=#810081>("D:\temp\rain.mdb", 0)<BR>    Set pFeatureClass = pFeatureWorkspace.OpenFeatureClass("pp")<BR>   'Set pFeatureWorkspace = pFeatureWorkspace.OpenFeatureClass("pp")<BR>   Dim pApp As IApplication<BR>   Dim pMxDoc As IMxDocument<BR>   Dim pFL As IFeatureLayer<BR>   Set pApp = Application<BR>   Set pMxDoc = pApp.Document<BR>   Set pFL = New FeatureLayer<BR>   Set pFL.FeatureClass = pFeatureClass<BR>   pFL.Name = pFeatureClass.AliasName<BR>   pMxDoc.FocusMap.AddLayer pFL</FONT></U></P>
<P><U><FONT color=#810081>对于子任务2，根据例子，找到如下代码（我未作任何编辑）：<BR>' Create the RasterInterpolationOp object<BR>Dim pInterpolationOp As IInterpolationOp<BR>Set pInterpolationOp = New RasterInterpolationOp<BR>' Create the input point object<BR>Dim pInputDataset As IGeoDataset<BR>' Calls function to open the point dataset from disk<BR>Set pInputDataset = OpenFeatureDataset("D:\SpatialData", </FONT></U></P>
<P><U><FONT color=#810081>"inputpoints")<BR>' Define the search radius<BR>Dim pRadius As IRasterRadius<BR>Set pRadius = New RasterRadius<BR>pRadius.SetVariable 12<BR>' Create the output dataset object<BR>Dim pOutputDataset As IGeoDataset<BR>' Calls the method<BR>Set pOutputDataset = pInterpolationOp.IDW(pInputDataset, 3, pRadius)</FONT></U></P>
<P><U><FONT color=#810081>但是现在的问题是子任务1用的是pFeatureClass，而子任务2需要</FONT></U></P>
<P><U><FONT color=#810081>OpenFeatureDataset，请问这两个怎么联系呀？<BR>能完成IDW插值的代码应该怎么写呀？谢谢了</FONT></U></P>

<P>看看这个帖子</P>
<P><a href="http://www.gisempire.com/bbs/Dispbbs.asp?boardid=62;ID=68770" target="_blank" >http://www.gisempire.com/bbs/Dispbbs.asp?boardid=62;ID=68770</A></P>
<P>在论坛搜索下，有很多相关帖子</P>