[Mapserver-users] Unique? Was: mapscript - queryByPoint help, simple Q

[Gerry Creager N5JXS]

Steve,

Set to positive or negative values?  I know it sounds silly, but I tried 
to adjust this on one of my projects and I've apparently lost the 
correct incantation!

Thanks, Gerry

woodbri at swoodbridge.com wrote:
> poff,
> 
> Do you have TOLERANCE set to a value, if it defaults to 0.0 then it 
> is going to be pretty hard to selecet a point.
> 
> -Steve
> 
> On 29 Aug 2003 at 14:08, poff wrote:
> 
> 
>>Hello
>>
>>I know everyone is busy - and thanks a lot for your help.
>>
>>Only, does _no-one_ use querbypoint with php mapscript?
>>
>>It's a great feature if I could get it working, and definitely
>>something to go in Wiki someday!
>>
>>Thanks
>>
>>P
>>
>>On Thu, Aug 28, 2003 at 11:40:42PM +0200, poff wrote:
>>
>>>>The problem is probably in your map file.
>>>>TEMPLATE belongs in the LAYER not the CLASS.
>>>
>>>Thanks, I changed this and no change to the outcome.
>>>
>>>However, I added the TEMPLATE tag to all of the layers and then
>>>suddenly, on the last layer:
>>>
>>>Warning: MapServer Error in msOpenSHPFile(): No (NULL) filename
>>>provided
>>>
>>>This is using $mapObj->query...
>>>
>>>With the $uLayer->query it just says no records.
>>>
>>>Then when I changed $uLayer to the last one they both give the NULL
>>>error.
>>>
>>>I'll go bald with all this hair pulling out!
>>>
>>>Thanks,
>>>
>>>P
>>>
>>>
>>>>
>>>>On Thu, 2003-08-28 at 19:15, poff wrote:
>>>>
>>>>>Hello again
>>>>>
>>>>>I've tried all the list suggestions with the followig code, but
>>>>>am _still_ getting "No Records Found".
>>>>>
>>>>>If anyone could suggest or point out what I'm doing wrong I'd be
>>>>>greatly indebted to them!
>>>>>
>>>>>Here it goes:
>>>>>
>>>>>...
>>>>>$map = ms_newMapObj($mapfile);
>>>>>
>>>>>$uLayer = $map->getLayerByName("Points");
>>>>>$uLayer->set("status",1);
>>>>>
>>>>>$image=$map->draw();
>>>>>
>>>>>while () {
>>>>>
>>>>>	$oPoint = ms_newPointObj();
>>>>>	$oPoint->setXY($geoData['px'], $geoData['py']);
>>>>>
>>>>>	$line = ms_newLineObj();
>>>>>	$line->add($oPoint);
>>>>>
>>>>>     	$shp=ms_newShapeObj(MS_SHAPE_POINT);
>>>>>     	$shp->add($line);
>>>>>     	$shp->{text}=$geoData['place_name'];
>>>>>      	$shp->{index}=$i;
>>>>>
>>>>>      	$uLayer->addFeature($shp);
>>>>>      		
>>>>>	$oPoint->draw($map, $uLayer, $image, 0,
>>>>>$geoData['place_name']);
>>>>>
>>>>>}
>>>>>
>>>>>$my_point = ms_newpointObj();
>>>>>$my_point->setXY($_REQUEST["mapa_x"],$_REQUEST["mapa_y"]);
>>>>>	
>>>>>$map->queryByPoint($my_point, MS_SINGLE, 20);
>>>>>
>>>>>$uLayer->queryByPoint($my_point,MS_SINGLE,-10); // for good
>>>>>measure ...
>>>>>
>>>>>And the mapfile:
>>>>>
>>>>>...
>>>>>LAYER
>>>>>	NAME "Points"
>>>>>	STATUS ON
>>>>>	TYPE POINT
>>>>>	LABELCACHE FALSE
>>>>>	CLASS
>>>>>		NAME "User Marker"
>>>>>		SYMBOL "marker"
>>>>>	      	TEMPLATE "dummy"
>>>>>		LABEL
>>>>>			...
>>>>>		END
>>>>>	END
>>>>>END
>>>>>...
>>>>>
>>>>>I'm pretty stumped! I tried by $map-> and $Layer-> queryByPoint
>>>>>to no great joy.
>>>>>
>>>>>Thanks in advance,
>>>>>
>>>>>P
>>>>>
>>>>>-- 
>>>>>poff at sixbit.org
>>>>>SDF Public Access UNIX System - http://sdf.lonestar.org
>>>>>
>>>>>Please do not carbon copy replies to me
>>>>>_______________________________________________
>>>>>Mapserver-users mailing list
>>>>>Mapserver-users at lists.gis.umn.edu
>>>>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>>>>
>>>>
>>>>
>>>>_______________________________________________
>>>>Mapserver-users mailing list
>>>>Mapserver-users at lists.gis.umn.edu
>>>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>>
>>>-- 
>>>poff at sixbit.org
>>>SDF Public Access UNIX System - http://sdf.lonestar.org
>>>
>>>Please do not carbon copy replies to me
>>>_______________________________________________
>>>Mapserver-users mailing list
>>>Mapserver-users at lists.gis.umn.edu
>>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>
>>-- 
>>poff at sixbit.org
>>SDF Public Access UNIX System - http://sdf.lonestar.org
>>
>>Please do not carbon copy replies to me
>>_______________________________________________
>>Mapserver-users mailing list
>>Mapserver-users at lists.gis.umn.edu
>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>
> 
> 
> 
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Network Engineering -- AATLT, Texas A&M University	
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.847.8578
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