[OpenLayers-Users] Display maps in OL from mapserver

[Julien-Samuel Lacroix]

Hi,

Try with the extents of your mapfile in the maxExtent option:
var bounds = new OpenLayers.Bounds(114.327181, 30.454108, 114.363140, 
30.495525)
map = new OpenLayers.Map( 'map', {maxExtent: bounds});

Then after addLayer zoom on that extent:
map.addLayer(layer);
map.zoomToExtent(bounds);

Julien

Chen kuja wrote:
> Thanks for your helpful tip. I saw this format from a old post, so i  
> thought it might be the right way to do with mapfile. Anyway, after 
> changing the code, the worldmap file(from tutorial) works pretty well. 
> But my file's output turned into an odd way. like in this screenshot
> http://img.album.pchome.net/00/06/47/89/4450279983314c88777d269a340264a6.png
>  Within the border, only a little dot exits.
> 
> Projection issue, I know this from FAQ and some old posts. But still, I 
> can't understand. My shp files were built under WGS84. And I  want to 
> integrate my base map and google earth's hybid image. So I chose 
> longitude&latitude as my extend. Openlayer's default projection type is 
> epsg 4326 which matches WGS84, right?
> 
> Besides, the extent vaules in either my mapfile or worldmap's is in 
> latitude&longitude format.
> this is image link of my mapfile's
> http://127.1/cgi-bin/mapserv.exe?layers=Shp_Lakes&map=%2Fms4w%2Fapps%2Fmap.map&mode=map&map_imagetype=png&mapext=112.5+22.5+123.75+33.75&imgext=112.5+22.5+123.75+33.75&map_size=256+256&imgx=128&imgy=128&imgxy=256+256 
> <http://127.1/cgi-bin/mapserv.exe?layers=Shp_Lakes&map=%2Fms4w%2Fapps%2Fmap.map&mode=map&map_imagetype=png&mapext=112.5+22.5+123.75+33.75&imgext=112.5+22.5+123.75+33.75&map_size=256+256&imgx=128&imgy=128&imgxy=256+256>
> and the  mapfile
> 
> MAP
>   NAME hzau
>   # Map image size
>   SIZE 800 800
>  
>   EXTENT 114.327181 30.454108 114.363140 30.495525
>   PROJECTION
>     'proj=longlat'
>     'ellps=WGS84'
>     'datum=WGS84'
>     'no_defs'
> 
> world map's
> http://127.1/cgi-bin/mapserv.exe?layers=Shp_Lakes&map=%2Fms4w%2Fapps%2F123.map&mode=map&map_imagetype=png&mapext=-90+0+-45+45&imgext=-90+0+-45+45&map_size=256+256&imgx=128&imgy=128&imgxy=256+256 
> <http://127.1/cgi-bin/mapserv.exe?layers=Shp_Lakes&map=%2Fms4w%2Fapps%2F123.map&mode=map&map_imagetype=png&mapext=-90+0+-45+45&imgext=-90+0+-45+45&map_size=256+256&imgx=128&imgy=128&imgxy=256+256>
> also the mapfile
> NAME world
>   # Map image size
>   SIZE 800 800
> 
>   EXTENT -179.999900 -90 179.999900 90
>   PROJECTION
>     'proj=longlat'
>     'ellps=WGS84'
>     'datum=WGS84'
>     'no_defs'
> 
> I guess with the openlayer's default extent, the export image should be 
> a little small, not a dot(still a dot after zooming for 5 times)
> Or I should just set extent manually?
> 
> best wish
> 
> 2008/5/6 Christian López Espínola <penyaskito at gmail.com 
> <mailto:penyaskito at gmail.com>>:
> 
>     Hi Chen,
> 
>     On Tue, May 6, 2008 at 8:31 AM, Chen kuja <eiclkun at gmail.com
>     <mailto:eiclkun at gmail.com>> wrote:
>      >             map = new OpenLayers.Map( 'map' );
>      >             layer = new OpenLayers.Layer.MapServer( "OpenLayers WMS",
>      >                      "http://127.1/cgi-bin/mapserv.exe?", { layers:
>      > 'Shp_Lakes',
>      >  map: 'map=/ms4w/apps/map.map'} );
>      >             map.addLayer(layer);
> 
>     Try with
>      >  map: '/ms4w/apps/map.map'} );
>      >             map.addLayer(layer);
> 
> 
>     --
>     Regards,
> 
>     Christian López Espínola
> 
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Users mailing list
> Users at openlayers.org
> http://openlayers.org/mailman/listinfo/users

-- 
Julien-Samuel Lacroix
Mapgears
http://www.mapgears.com/