[mapserver-users] MapScript: HOW to get query result in NEW img

[Marco Foi]

I need to query a map and have the result displayed in a different image.
BUT the main image is affected by the query and 
gets recentered on the SAME EXTENT of the query map.

I'm using PHP MapScript

Here is the 'core' of my code:

// create a new point object at the clicked 
coordinates, to use it in queryByPoint
$querypoint = ms_newPointObj();
//$cy & $cy are the conversion in map units of 
the image coordinates of the queryed point on the map
$querypoint->SetXY($cx, $cy);
[...]
//define the layer that will be queryed
$layertoquery =$map->getLayerByName('geology');
//perform the query
$res = $layertoquery->queryByPoint($querypoint, MS_SINGLE, ($map->cellsize)*5);

//FIRST draw the map image
$image=$map->draw();
$image_url=$image->saveWebImage();

//THEN draw the query image
$thequerymap = $map->drawQuery();
$querymap_url=$thequerymap->saveWebImage();


BUT $image_url IS AFFECTED by the query and 
displays che same extent of $querymap_url

How can I avoid this?

Marco



At 18.48 25/06/2008, you wrote:
------------------------------------------------------------
Marco,
I suppose you are using mapscript - php or other - in your application.
The postback of your page send not only the click point, but - maybe -
other parameters.
Whit some javascript you can set a parameter wich tell your app not to
affect the main map, but only the query map.

Please post your code, html and scripts, for more specific help.

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


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



On Mer, Giugno 25, 2008 15:46, Marco Foi wrote:
 > Hi all!
 >
 > I need to let the user queryByPoint (click) on a
 > "mainmap" and get the result displayed on a
 > second image WITHOUT influencing the "mainmap".
 >
 > I tryed but the when i use the drawQuery() method
 > it seems that also the "mainmap" is affected: it
 > gets zoomed to the center of the feature (poligon) queryed.
 > At the end the only difference between the two
 > maps is that the image result of the query has
 > the feature HILITED while the mainmap not.
 >
 > How can I avoid the problem?
 >
 > Marco Foi
 >
 > Dip. di Scienze della Terra "A.Desio"
 > Sezione di Geologia e Paleontologia
 > http://www.gp.terra.unimi.it
 > Università degli Studi di Milano
 > Via.Luigi Mangiagalli n.34 Cap.20133 Milano
 > Laboratorio Informatico - Tel. 02- 503 15 503
 > E-mail marco.foi at unimi.it
 >
 > _______________________________________________
 > mapserver-users mailing list
 > mapserver-users at lists.osgeo.org
 > http://lists.osgeo.org/mailman/listinfo/mapserver-users
 >

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