[mapserver-users] Creating legend
Roger André
randre at gmail.com
Wed Oct 8 13:57:57 EDT 2008
Hi Subha,
I think for the "mode=legend" to work, you need to change the LAYER status
to DEFAULT. However, you can test the legend function via WMS request
without changing the status by using a request similar to this: (linebreaks
added for clarity)
http://localhost/cgi-bin/mapserv?map=/var/www/mapfiles/states/states.map
&service=wms
&version=%221.1.1%22
&request=GetLegendGraphic
&layer=countries
&styles=
&width=60
&height=40
&format=png
Roger
--
On Tue, Oct 7, 2008 at 11:38 PM, Subha Ramakrishnan <subha at gslab.com> wrote:
> Fawcett, David wrote:
>
>> Or, just a straight mode=legend request to the CGI if you are using
>> MapServer. You can pass in your extent, that will manage the
>> scale-dependent layers.
>>
>> Will the map file remain the same for this? I did try using mode=legend
> in my request and added that to a separate DIV.But the request doesn't seem
> to be generating any image.
> This is how my map file looks. I've not pasted the entire contents as its
> too big.
>
> legend
> status on
> imagecolor 255 0 0
> position ul
> end
> layer
> CONNECTIONTYPE postgis
> name india_states
> CONNECTION "user=postgres dbname=ibp host=localhost"
> group world
> type polygon
> dump true
> METADATA
> "wfs_title" "Factbook Metadata"
> "gml_include_items" "all"
> "wms_feature_info_mime_type" "text/html"
> END
> template "template.html"
> projection
> "init=epsg:4326"
> end
> transparency alpha
> status on
> data "topology from india_states using unique id using SRID = -1"
> CLASSITEM "state"
> CLASS
> NAME "JAMMU & KASHMIR"
> EXPRESSION "JAMMU & KASHMIR"
> STYLE
> COLOR 191 191 155
> OUTLINECOLOR 000 000 000
> #antialias true
> end
> end
> CLASS
> NAME "HIMACHAL"
> EXPRESSION "HIMACHAL"
> STYLE
> COLOR 245 226 188
> OUTLINECOLOR 000 000 000
> #antialias true
> end
> end
> And this request is like this as per the example i found here :
> http://openlayers.org/pipermail/users/2008-September/007495.html
> var legenddiv = document.createElement('div');
> legenddiv.setAttribute('id','legend');
> legenddiv.innerHTML = '<img src = "
> http://localhost/cgi-bin/mapserv?mode=legend&map='+mapfile+<http://localhost/cgi-bin/mapserv?mode=legend&map=%27+mapfile+>
> '"</img>';
> document.getElementById('map').appendChild(legenddiv);
>
> Thanks & regards,
> Subha
>
>
>> David.
>>
>> -----Original Message-----
>> *From:* mapserver-users-bounces at lists.osgeo.org
>> [mailto:mapserver-users-bounces at lists.osgeo.org] *On Behalf Of
>> *Roger André
>> *Sent:* Tuesday, October 07, 2008 12:06 PM
>> *To:* Steve Lime
>> *Cc:* mapserver-users at lists.osgeo.org
>> *Subject:* Re: [mapserver-users] Creating legend
>>
>> Also, you might want to consider making a separate
>> GetLegendGraphic WMS request and putting the legend in a separate
>> DIV element in your web page.
>> Just an idea.
>> --
>>
>> On Tue, Oct 7, 2008 at 8:22 AM, Steve Lime
>> <Steve.Lime at dnr.state.mn.us <mailto:Steve.Lime at dnr.state.mn.us>>
>> wrote:
>>
>> Visit:
>>
>> http://www.openlayers.org/dev/examples/example-list.html
>>
>> and search for untiled. There's a "WMS Untiled" example you
>> can view the source of. The singleTile option goes in the
>> "options" object as opposed the "params" object. Params get
>> passed to the WMS service, options are handled by OL.
>>
>> Steve
>>
>> >>> Subha Ramakrishnan <subha at gslab.com
>> <mailto:subha at gslab.com>> 10/07/08 9:58 AM >>>
>> Hi Steve,
>> It would be great if you can give me an example or tell me
>> where it is
>> usually set in OL.
>> Thanks for your help.
>>
>> Subha
>>
>> Steve Lime wrote:
>> > There's nothing you have to do on the MapServer side. Looks
>> like your OL config is wrong
>> > though. I think 'singleTile' is set in the wrong
>> configuration object, perhaps others are in
>> > the wrong place too.
>> >
>> > Steve
>> >
>> >
>> >>>> Subha Ramakrishnan <subha at gslab.com
>> <mailto:subha at gslab.com>> 10/07/08 1:30 AM >>>
>> >>>>
>> > Hi,
>> >
>> > I am using mapserver 5.0.2 with openlayers.
>> > I've a problem while creating a legend for a map from
>> mapserver.When i
>> > try to overlay the image from the mapserver on openlayers'
>> base map, the
>> > images are rendered in tiles, and every tile has a legend
>> and is limited
>> > by the size of the tile. So, i see lots of legends on the
>> map and only
>> > half of them are visible as it is restricted by the tile size.
>> >
>> > This is my request to mapserver from openlayers
>> >
>> > var mapfile = layer_tablename+'.map';
>> > twms1 = new OpenLayers.Layer.WMS(
>> > layer_tablename,"http://localhost/cgi-bin/mapserv?",
>> > { map: mapfile,
>> > transparent: 'true', layers:layer_tablename,
>> > format: 'image/png',
>> > projection:"EPSG:4326",reproject:false,
>> > units: "m",
>> > singleTile: true
>> > },{numZoomLevels : MaxZoomLevel});
>> > map.addLayer(twms1);
>> >
>> > I am using the option of singleTile. Is there any setting to
>> be done in
>> > the map file or mapserver for it render a single tile/single
>> legend per
>> > image?
>> >
>> > Thank you.
>> >
>> > Regards,
>> > Subha
>> >
>> > _______________________________________________
>> > mapserver-users mailing list
>> > mapserver-users at lists.osgeo.org
>> <mailto:mapserver-users at lists.osgeo.org>
>> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
>> >
>> >
>> >
>>
>>
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>>
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