[mapserver-users] QueryByPoint problem: why always the same feature?

[Pietro Giannini]

Carlo,
I think the cache is refreshed each call of $layer->queryByPoint(point,
mode, buffer).
Remember to set the "mode" = MS_MULTIPLE to obtain more than one result,
the point is a $pointObj in GEOGRAPHIC coordinates, the buffer set to 0
get the default of the TOLERANCE (in pixels) of the mapfile, otherwise you
can specify in ground units a circle around the point for obtain the
results.

Look here:
http://mapserver.gis.umn.edu/docs/reference/phpmapscript-class
for a good guide about.

here a piece of code (it work):

	$res = @$layer->queryByPoint($qpoint,MS_MULTIPLE,0);
	if (@$layer->getNumResults() > 0) {
		$layer->open();
		for ($i=0;$i<$layer->getNumResults();$i++) {
			$resCache = $layer->getResult($i);
			$shape = $layer->getShape(-1,$resCache->shapeindex);
			echo $shape->values['fieldname']."<br>";
			// .... etc.
		}
		$layer->close();
	}

ciao
..........................pg


-- 
Pietro Giannini
Bytewise srl - Area GIS
41°50'38.58"N 12°29'13.39"E





On Lun, Aprile 21, 2008 13:20, Carlo Pelliconi wrote:
> Hi all.
> I use PHPMapScritp with Mapserver 4.10 on Debian Etch.
> I do a series of querybypoint, but the answer is always the first feature!
> I think it could be a resultCacheMember problem. How can I free all
> cache about previous query results?
> New results of next query are appended to previous results or getResult
> goes to a new set at any new query?
> It is sufficient to close the queried layer ad to free the
> $shp=getResult(...)?
> Thank you very much.
> Carlo
>
> --
> ing. Carlo Pelliconi
> c.pelliconi at sis-ter.it
> SIS.TER S.p.A.
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-- 
Pietro Giannini
Bytewise srl - Area GIS
41°50'38.58"N 12°29'13.39"E