[OpenLayers-Dev] WMS server manager

Lorenzo Becchi lorenzo at ominiverdi.com
Fri Apr 27 10:48:21 EDT 2007

Hi Lance, thanks for the reply.

more than questions on how to implement (I have an idea about all of 
them) those where questions about how to operate.
I've created a libs/OpenLayers/control/WMSManager.js class starting from 
LayerSwitcher.js, and now I would like to extend it with all those 
features I've listed in those questions but I would to decide all 
together (if you're interested) how to go further and what to do first.

I can do a monolithic library or better create a legend object  that 
both WMSManager and LayerSwitcher could use.
does this make sense?


Lance Dyas wrote:
> Lorenzo Becchi wrote:
>> Hi,
>> I've reachead my very minimum target and I would like to debate the 
>> result with who's interested:
>> http://www.ominiverdi.org/openlayers/examples/wms_manager.html
>> I've blocked the list of server for better usability but we can think 
>> to have a free field too.
> There are some extensive retrievable server lists in XML that could be 
> quite useable
> one currently at refractions and microimages is developing a similar 
> one, there is no "simple" standard
> for this though so it is a bit of a hack... WCS support would be even nicer
> but...
>> as far as I've played with it, some questions arise:
>> 1) how to shift up and down a layer in the legend?
> changing the maps layer list order...
>> 2) how to change opacity for a single layer on the fly?
>> 3) how to drop a layer?
>> 4) how to deal with different layer projections and extents
> some wms will reproject whatever they have in to what you need if you 
> know an extent box for it, but it is definitely not something
> you can rely on.
>> 5) how to deal with transparent layers (png) and overlays?
> For servers which have gifs I have found that they usually handle them 
> better than pngs other wise use pngs for overlays
> More later

More information about the Dev mailing list