[OpenLayers-Users] Best way to get a legend over a map
Gery .
gamejihou at hotmail.com
Wed May 15 12:50:02 PDT 2013
Hi Samuel,
I use attribution (thanks to Phil for the idea), here you have a good example: http://stackoverflow.com/questions/5539633/adding-a-absolutely-positioned-div-to-the-bottom-of-an-openlayers-map/5568762#5568762
Cheers
Gery
Sent from my iRon
On May 15, 2013, at 20:08, "Samuel Gilbert" <samuel.gilbert at ec.gc.ca> wrote:
Hello,
I'm using OpenLayer to display forecasted air pollutant concentrations and
rain from radar scans. The layers I display are therefore color graduated. I
would like to add a color scale to the map to make the correspondence between
the color and the forecasted concentration or rain intensity. Since the
application will be used in full-screen mode, I would like the legend to float
over the map like the zoom controls.
The WMS GetCapabilities does list styles from the layers and contains
LegendURL elements with links to the actual resource.
"Format/WMSCapabilities/v1_1.js" defines the function GetLegendGraphic, but
it's not used anywhere else in the OpenLayer(version 2.12) code.
What would be the best way to add the legend over the map? I could copy and
modify "Control/Attribution.js", but is there a better way to do this? Also,
ideally I would like to make a link with the currently displayed layer and the
retrieval and display of the legend.
Cheers,
Samuel
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