[mapserver-users] displaying query problem

[Stephen Woodbridge]

Pushkar,

The field names are case sensitive. You must match the case spelling of
the field names. One the shp file in ArcExplorer2 and check the case of
the names. You can not rely on "dbfdump --info file.dbf" from the Perl
utility.

-Steve

Pushkar Pradhan wrote:
> 
> Steven,
> Thank you for your response but it didn't work either.
> Just to make sure "RESULT_FIELDS" must contain the attribs. name, right?
> In doing a query do I need any other function besides
> gMapDumpQueryResults() in order to display the info. about the layers?
> 
> > Pushkar,
> >
> > You MUST also have a TEMPLATE statement in the LAYER or CLASS definition
> > or that layer will NOT be queried. It is sufficent to say
> >
> > TEMPLATE void
> >
> > -Steve
> >
> > Pushkar Pradhan wrote:
> > >
> > > Hi,
> > > I am trying to display query results, I am using code from the gmap demo.
> > > In short I do this, the gmapDumQueryResults() is unchanged from gmap demo.
> > > In my map file I have:
> > >    METADATA
> > >       "DESCRIPTION" "Buildings"
> > >       "RESULT_FIELDS" "Area Perimeter"
> > >    END
> > > Area and perimeter are the attribs I want displayed.
> > > When I query a point in my map I get:
> > > Nothing found at query location.  even though I click on a layer.
> > > This happens because the numResults val. in gmapDumpQueryResults() is
> > > zero:
> > >         $numResults = $oLayer->getNumResults();
> > >
> > >         if ($numResults == 0)
> > >             continue;  // No results in this layer
> > >
> > > php code:
> > > if ( isset($HTTP_POST_VARS["mode"]) ) {
> > >    $nClickPixX = intval($HTTP_FORM_VARS[mapa_x]);
> > >    $nClickPixY = intval($HTTP_FORM_VARS[mapa_y]);
> > >    $dfWidthPix = 600;
> > >    $dfHeightPix = 500;
> > >    $dfMinX = $map->extent->minx;
> > >    $dfMaxX = $map->extent->maxx;
> > >    $dfMinY = $map->extent->miny;
> > >    $dfMaxY = $map->extent->maxy;
> > >    if( $HTTP_POST_VARS["mode"] == "query") {
> > >       $nClickGeoX = GMapPix2Geo($nClickPixX, 0, $dfWidthPix, $dfMinX,
> > > $dfMaxX, 0);
> > >       $nClickGeoY = GMapPix2Geo($nClickPixY, 0, $dfHeightPix, $dfMinY,
> > > $dfMaxY, 1);
> > >
> > >       $oClickGeo = ms_newPointObj();
> > >       $oClickGeo->setXY($nClickGeoX, $nClickGeoY);
> > >
> > >       // Use '@' to avoid warning if query found nothing
> > >       @$map->queryByPoint($oClickGeo, MS_SINGLE, -1);
> > >       gmapDumpQueryResults();
> > >    }
> > > }   // end of if loop
> > > Do I need to call some other functions.
> > > ------------------------------------------------------------------------------
> > > PUSHKAR S. PRADHAN
> > > Research Assistant
> > > MISSISSIPPI STATE UNIVERSITY,
> > > STARKVILLE, MS 39759.
> > >
> > > Engineering Research Center
> > > Box 9627
> > > Mississippi State, MS 39762-9627
> > > ------------------------------------------------------------------------------
> >
> 
> ------------------------------------------------------------------------------
> PUSHKAR S. PRADHAN
> Research Assistant
> MISSISSIPPI STATE UNIVERSITY,
> STARKVILLE, MS 39759.
> 
> Engineering Research Center
> Box 9627
> Mississippi State, MS 39762-9627
> ------------------------------------------------------------------------------