Querying using georefferencial units

[Eduardo Zenaide]

one more thing. can i access shape extents through $gpoMap object?
$gpoMap->extent->minx or something like this?

thanks!

2007/5/11, Eduardo Zenaide <ezenaide at gmail.com>:
>
> thanks, Steve, but there's one thing i didn't understand:
>
> when MapServer do the query, it uses the georreferencial units, ok. but,
> it uses pixels to do the zooming thing. like this:
>
> ###############
>
> ... var_minxp=&var_minx=-
> 38.234122&var_miny=-11.52665&var_maxx=-34.594394&var_maxy=-8.133178&minx=-38.736107&miny=-11.526650&maxx=-34.092409&maxy=-8.133178
> ...
> CMD=QUERY_POINT&INPUT_TYPE=auto_rect&INPUT_COORD=168%2C180%3B216%2C225
>
> ###############
>
> the final part is used to do the zoom. with ROSA tool it works, but i'm
> trying to do this using a search string with a text box. my function do
> this:
>
> ###############
>
> function determinaQSTRING() {
>         var hostPar = "http://localhost:82/zaal/al.php?";
>         var keymapPar = "KEYMAPXSIZE=100&KEYMAPYSIZE=75&";
>         var layerFixa = "Limite_Estadual_AL=Y&grid=Y&";
>         var layer = document.pesquisa.layersList.value;
>         var modePar = "&CMD=QUERY_POINT&INPUT_TYPE=auto_rect&";
>         var imagePar = "imagewidth=760&imageheight=570";
>         var queryEntry = document.pesquisa.busca.value;
>         var operador = document.pesquisa.operadores.value;
>         var minx = "minx=-37.561294&";
>         var miny = "miny=-9.304462& ";
>         var maxx = "maxx=-37.228709&";
>         var maxy = "maxy=-9.160048&";
>         document.pesquisa.qstring.value = "(\"[NOME]\" "+ operador +" /"+
> queryEntry +"/)";
>         window.opener.document.location = hostPar + keymapPar + layerFixa
> + layer + "=Y&" + minx + miny + maxx + maxy + imagePar + modePar +
> "INPUT_COORD=";
> }
>
> ###############
>
> i've tried to change the minx, miny, etc vars to get the actual size of
> queried layers using the [shpxy] and [shpminx], etc. i'm still trying to
> figure it out, but i've already tested using the exactly coordinates - just
> as in the function above - and didn't work.
> when the query is made through the search string, it gets this INPUT_COORD
> to zoom. and it uses pixel units. i think if i could convert the pixel units
> to georreferencial it will work.
>
> sorry to bother and all, but i'm really stuck with it.
>
> thanks in advance :)
>
>
> 2007/5/10, Steve Lime <Steve.Lime at dnr.state.mn.us>:
> >
> > Hi Eduardo: Sure, this is no problem. All the query routines expect map
> > units (not pixels) and it's the CGI program that does that conversion
> > before-hand.
> >
> > To query by point use mapxy, by bbox use mapext and by shape use mapshp.
> > For example:
> >
> >   http://.../cgi-bin/mapserv?map=
> > my.map&mode=query&qlayer=parcels&mapxy=1234.5678+1234.5678
> >
> > Steve
> >
> > >>> Eduardo Zenaide <ezenaide at GMAIL.COM > 05/09/07 2:28 PM >>>
> > Hi, list.
> >
> > ok, i am able to get polygon extents.
> > but the query string is made using a pixel referrencing based on
> > previous
> > image.
> > there's a way to tell MapServer to query using georeferrencing units? or
> >
> > maybe any way to convert the pixel units to georreferencial?
> >
> > i'm using an application based on GMap and i've seen some GMapPix2Geo
> > function on the code. this could be used on the query string?
> >
> > --
> > Eduardo Zenaide
> >
> >
>
>
> --
> Eduardo Zenaide




-- 
Eduardo Zenaide
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