small readme update to include wms overlay
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README.md
19
README.md
@ -269,12 +269,31 @@ Optional properties include
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#### To add a new base layer
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The layer will be called `name`. By default it expects a leaflet Tilelayer style url. You can also use a WMS
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style server by adding a property `wms: true`. (see overlay example below)
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msg.payload.command.map = {
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name:"OSMhot",
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url:'http://{s}.tile.openstreetmap.fr/hot/{z}/{x}/{y}.png',
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opt:{ maxZoom:19, attribution:"© OpenStreetMap" }
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};
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#### To add a WMS overlay layer - eg US weather radar
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To add an overlay instead of a base layer - specify the `overlay` property instead of the `name`.
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msg.payload.command.map = {
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overlay: "NowCoast",
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url: 'https://nowcoast.noaa.gov/arcgis/services/nowcoast/radar_meteo_imagery_nexrad_time/MapServer/WmsServer?',
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opt: {
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layers: '1',
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format: 'image/png',
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transparent: true,
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attribution: "NOAA/NWS"
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},
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wms: true
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}
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#### To add a new geoJSON overlay
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msg.payload.command.map = {
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