[mapserver-users] getFeatures of the clicked shape
Hy !
I have a problem with getting an ID of a shape
This is the code i use:
$layer = $map-getLayerByName('sde1','sde2','sde3','sde4');
if ($layer-getNumResults() == 1) {
$res = $layer-getResult(0);
$layer-open();
$shape = $layer-getFeature($res-shapeindex, $res-tileindex);
$id = $shape-ID;
$layer-close();
}
I,think it puts the ID's of all of the shapes what the spaefile contain.
Am i think right?
How can i put only the clicked shape's ID to the $id variable?
I am able to get the clicked X and Y coords from a Js code, it is
usefull to get the ID of the clicked shape?
Thanks a lot for the answers,
Zsolt
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[mapserver-users] GetFeatures - get the ID value of clicked shape
Hy all
Can someone help me with this?
$layer = $map-getLayerByName('sde1','sde2','sde3','sde4');
// xy pix - geo pt
$xPixel = $_REQUEST['x'];
$yPixel = $_REQUEST['y'];
$xGeo = $_SESSION['GEOEXT']['minx'] + (($xPixel/$_SESSION['mapwidth']) *
($_SESSION['GEOEXT']['minx']-$_SESSION['GEOEXT']['maxx']));
$yGeo = $_SESSION['GEOEXT']['maxy'] - (($yPixel/$_SESSION['mapheight'])
* ($_SESSION['GEOEXT']['maxy']-$_SESSION['GEOEXT']['miny']));
$pt = ms_newPointObj();
$pt-setXY($xGeo, $yGeo);
// proj
$mapProjStr = $map-getProjection();
$layerProjStr = $layer-getProjection();
if ($mapProjStr $layerProjStr $mapProjStr != $layerProjStr) {
$mapProjObj = ms_newprojectionobj($mapProjStr);
$layerProjObj = ms_newprojectionobj($layerProjStr);
$pt-project($mapProjObj, $layerProjObj);
}
// set map extent and size:
$map-setExtent($_SESSION['GEOEXT']['minx'],
$_SESSION['GEOEXT']['miny'], $_SESSION['GEOEXT']['maxx'],
$_SESSION['GEOEXT']['maxy']);
$map-setSize($_SESSION['mapwidth'], $_SESSION['mapheight']);
$map-preparequery();
// Use '@' to avoid warning if query found nothing
@$layer-queryByPoint($pt, MS_SINGLE, -1);
$pt-free();
if ($layer-getNumResults() == 1) {
$res = $layer-getResult(0);
$layer-open();
$shape = $layer-getFeature($res-shapeindex, $res-tileindex);
*$id = $shape-ID;*
$layer-close();
}
This code gets the x and y coordinates of the clicking ($xPixel =
$_REQUEST['x']) I have transformed it to Geo coords, and so on, and in
the end i want to search for my clicked shape's ID
Am i right that the $id variable is contaning the ID value of the
clicked shape? i have bolded the line i talking about.. (The shape file
have an attribute table and mine have a ID column)
Please if someone can help , do it:P
thanks,
Zsolt
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