请教：我把一条Polyline分为很多segment时遇到的问题。代码如下

' 第一部分，选取FID=2的feature。在图中，该feature是一条Polyline
<P>Dim pWSFact As IWorkspaceFactory<BR>Set pWSFact = New ShapefileWorkspaceFactory<BR>Dim pFeatureWorkspace As IFeatureWorkspace<BR>Set pFeatureWorkspace = pWSFact.OpenFromFile("D:\exercise of gis", Application.hWnd)<BR>' Find the states feature class<BR>Dim pFeatureClass As IFeatureClass<BR>Set pFeatureClass = pFeatureWorkspace.OpenFeatureClass("dungou")<BR>Dim pFeature As IFeature<BR>Set pFeature = pFeatureClass.GetFeature(2)</P>
<P><BR>' 第二部分，把选取的对象分为很多segment。在调试时，问题出在“Set pS = pLine”这一句，错误提示“类型不匹配”。</P>
<P>' 请问怎么解决这个问题？</P>
<P>Dim pLine As IPolyline<BR>Set pLine = pFeature<BR>Dim pS As ISegment<BR>Set pS = pLine<BR>Dim nn As Double<BR>nn = 0.001<BR>Dim pSeg(1000) As ISegment<BR>Dim n As Long<BR>pS.SplitDivideLength 0, 0.001, True, n, pSeg(0)<BR>MsgBox n</P><img src="images/post/smile/dvbbs/em30.gif" /><img src="images/post/smile/dvbbs/em30.gif" /><img src="images/post/smile/dvbbs/em30.gif" />

<P>肯定不行啦！</P>
<P>POLYLINE只能转化成SEGMENTCOLLECTION，不能转化成SEGMENT。</P>

<img src="images/post/smile/dvbbs/em01.gif" />

支持2楼