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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When I used the debugger to step into the OGRLayer GetExtent
method I noticed that it walks through all of the features in the dataset and
tests the envelope of each feature in the set.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Are there any driver specific optimizations (i.e. OCI) that
could be called instead of this one since it does take a long time for a large
dataset?</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I realize we can create our own but I would like to use a
built in function if it is available.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Frank: Since you are working in the OCI driver would this be
a good time to add something like:</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> select
min(a1.SHAPE.SDO_POINT.X),</span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:.5in'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> max(a1.SHAPE.SDO_POINT.X),</span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:.5in'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> min(a1.SHAPE.SDO_POINT.Y),</span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:.5in'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> max(a1.SHAPE.SDO_POINT.Y)
from DatasetName a1;</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Of course that falls back on the first question, is there
already a built in method.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Bruce</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
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