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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Frank,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have a class that allows me to insert new geometries into
a shape file. I’m also using a spatial index on each file. I
noticed the method GetIndex() on the OGRLayer and the fact that the class OGRLayerAttrIndex
has methods like AddToIndex() and RemoveFromIndex(). What I would like to
do is incrementally add or delete one geometry to the index at a time as I
add/remove geometries, rather than dropping the whole index and rebuilding it
when I modify the file. I tried to use the AddToIndex() function but it
didn’t add anything to the index file. Could you explain to me how
to use the OGRLayerAttrIndex class?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks in advance,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Martin<o:p></o:p></span></font></p>
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