Hi
I have a shapefile containing almost 250k points in 3 cols
(lat/long/sitetype).
I need to use PHP mapscript to query that file to tell me how many points of
a given type are present in a given rectangle.
The script will either tell me the number of points in rectangle, OR points
of a given type, but never both...
Unfortunately I'm not at liberty to post the datafile anywhere, but the gist
of the PHP is here:
<snip>
$lstrMapPath = "/path/to/shapefile";
$lstrOutput = "";
$lobjMap = ms_newMapObj($lstrMapPath);
$lobjLayer = $lobjMap->getLayerByName("layer1");
if(!$lobjLayer) {
exit; // errors handled elsewhere
}
$lobjLayer->open();
/* THIS WORKS */
@$lobjLayer->queryByRect($lobjRect);
$lintCount = $lobjLayer->getNumResults();
/* THIS ALSO WORKS - BUT NOT IF THE queryByRect() is enabled above */
/*
@$lobjLayer->queryByAttributes('sitetype','8',MS_MULTIPLE);
$lintCount = $lobjLayer->getNumResults();
*/
$lstrOutput = "layer".$k.":".$lintCount;
$lobjLayer->close();
echo $lstrOutput;
</snip>
Any pointers would be gratefully received!
Cheers
Charlie
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