[Mapserver-users] mapscript - queryByPoint help, simple Q

[poff]

> Do you have a template defined for the layer?

No, sounds like I should!

I have never used templates before, but in the query layer, and the point 
class I added:

TEMPLATE "dummy"

And instead of No Records I get:

Warning: MapServer Error in msOpenSHPFile(): No (NULL) filename provided

So it seems like progress!

$result=$uLayer->queryByPoint ($my_point,MS_SINGLE,-10);

Generates this error, but I didn't think I'd need a SHP file or anything.

Any ideas how to proceed?

Thanks very much!

P

> Lowell
> 
> The following message was sent by poff <poff at sixbit.org> on Thu, 28 Aug
> 2003 09:54:37 +0200.
> 
> > Hello again,
> > 
> > I'm having problems getting any results with queryByPoint.
> > 
> > Basically I draw my map as usual then I try the following on the drawn   
> > layer:
> >   
> >         $my_point = ms_newpointObj();
> > 
> >         $my_point->setXY($_REQUEST["mapa_x"],$_REQUEST["mapa_y"]);
> > 
> >         $result=$uLayer->queryByPoint ($my_point,MS_SINGLE,-20);
> >   
> > I tried different buffers, zooming in etc. but I always get: "No matching 
> > Record(s) found"
> > 
> > The layer is drawn OK, and is simple as far as the mapfile goes (nothing 
> > apart from):
> > 
> > ...
> > STATUS ON
> > TYPE POINT
> > LABELCACHE FALSE
> > 
> > CLASS
> > 	SYMBOL
> > END
> > 
> > END
> > ...
> > 
> > The points are drawn in from a database, so if I could convert the 
> > $_REQUEST clicks into lat/lon I could just query the database instead of 
> > mapserver.
> > 
> > Has anyone got any light to shed on this? I'd be most grateful if someone 
> > could show me what I'm doing wrong, or suggest how to get the lat/long 
> > values. The archives didn't seem to have anyone in my situation - which 
> > suggested to me I'm missing something basic out.
> > 
> > Thanks in advance,
> >  
> > -- 
> > poff at sixbit.org 
> > SDF Public Access UNIX System - http://sdf.lonestar.org
> > 
> > Please do not carbon copy replies to me
> > _______________________________________________
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> > Mapserver-users at lists.gis.umn.edu
> > http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
> 
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-- 
poff at sixbit.org
SDF Public Access UNIX System - http://sdf.lonestar.org

Please do not carbon copy replies to me