448 lines
24 KiB
Markdown
448 lines
24 KiB
Markdown
# node-red-contrib-web-worldmap
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A <a href="https://nodered.org" target="mapinfo">Node-RED</a> node to provide a world
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map web page for plotting "things" on.
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### Updates
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- v1.5.29 - Remove lat/lon from popup if using .popup property. Allow icon to be loaded from http.
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- v1.5.28 - Tidy up popup location and timing. Auto add countries overlay if no internet.
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- v1.5.27 - Add hide right click option to config panel
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- v1.5.26 - Ensure all map tiles loaded over https
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- v1.5.25 - Add button command to allow user to add and remove buttons
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- v1.5.24 - Ensure hiderightclick does do that, and popup always has close button. Issue #69, #70
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- v1.5.23 - Let icon support use of emoji specified as :emoji name:
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- v1.5.22 - Slight adjust to label positions for default map marker icon. Add .lineColor for bearing lines
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- v1.5.21 - Add .label option to display permanent label. Clean up some excess debug logging
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- ...
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see [CHANGELOG](https://github.com/dceejay/RedMap/blob/master/CHANGELOG.md) for full list.
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## Install
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Either use the Manage Palette option in the Node-RED Editor menu, or run the following command in your Node-RED user directory - typically `~/.node-red`
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npm i --save node-red-contrib-web-worldmap
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## Usage
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Plots "things" on a map. By default the map will be served from `{httpRoot}/worldmap`, but this
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can be configured in the configuration panel.
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Use keyboard shortcut `⌘⇧m`, `ctrl-shift-m` to jump to the map.
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The minimum **msg.payload** must contain `name`, `lat` and `lon` properties, for example
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msg.payload = { "name":"Jason", "lat":51.05, "lon":-1.35 }
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`name` must be a unique identifier across the whole map. Repeated location updates to the same `name` move the marker.
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Optional properties include
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- **deleted** : set to <i>true</i> to remove the named marker. (default <i>false</i>)
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- **draggable** : set to <i>true</i> to allow marker to be moved. (default <i>false</i>)
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- **layer** : specify a layer on the map to add marker to. (default <i>unknown</i>)
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- **speed** : when combined with bearing, draws a vector.
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- **bearing** : when combined with speed, draws a vector.
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- **accuracy** : when combined with bearing, draws a polygon of possible direction.
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- **lineColor** : CSS color name or #rrggbb value for bearing line or accuracy polygon
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- **icon** : <a href="https://fontawesome.com/v4.7.0/icons/" target="mapinfo">font awesome</a> icon name, :emoji name:, or http://
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- **iconColor** : Standard CSS colour name or #rrggbb hex value.
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- **SIDC** : NATO symbology code (can be used instead of icon). See below.
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- **building** : OSMbulding GeoJSON feature set to add 2.5D buildings to buildings layer. See below.
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- **ttl** : time to live, how long an individual marker stays on map in seconds (overrides general maxage setting, minimum 20 seconds)
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- **photoUrl** : adds an image pointed at by the url to the popup box.
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- **videoUrl** : adds an mp4 video pointed at by the url to the popup box. Ideally 320x240 in size.
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- **weblink** : adds a link to an external page for more information. Either set a url as a *string*, or an *object* like `{"name":"BBC News", "url":"http://news.bbc.co.uk", "target":"_new"}`
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- **addtoheatmap** : set to <i>false</i> to exclude point from contributing to the heatmap layer. (default true)
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- **intensity** : set to a value of 0.1 - 1.0 to set the intensity of the point on the heatmap layer. (default 1.0)
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- **popped** : set to true to automatically open the popup info box, set to false to close it.
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- **popup** : html to fill the popup if you don't want the automatic default of the properties list.
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- **label** : displays the contents of label next to the icon.
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Any other `msg.payload` properties will be added to the icon popup text box. This can be overridden
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by using the **popup** property to supply your own html content.
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### Icons
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You may select any of the Font Awesome set of [icons](https://fontawesome.com/v4.7.0/icons/).
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If you use the name without the fa- prefix (eg `male`) you will get the icon inside a generic marker shape. If you use the fa- prefix (eg `fa-male`) you will get the icon on its own.
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You can also specify an emoji as the icon by using the :emoji name: syntax - for example `:smile:`. Here is a **[list of emojis](https://github.com/dceejay/RedMap/blob/master/emojilist.md)**.
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Or you can specify an image to load as an icon by setting the icon to http(s)://... It will be scaled to 32x32 pixels. For example `"https://img.icons8.com/windows/32/000000/bird.png"`
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There are also several special icons...
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- **plane** : a plane icon that aligns with the bearing of travel.
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- **ship** : a ship icon that aligns with the bearing of travel.
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- **car** : a car icon that aligns with the bearing of travel.
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- **uav** : a small plane icon that aligns with the bearing of travel.
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- **arrow** : a map GPS arrow type pointer that aligns with the bearing of travel.
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- **wind** : a wind arrow that points in the direction the wind is coming FROM.
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- **satellite** : a small satellite icon.
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- **iss** : a slightly larger icon for the ISS.
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- **locate** : a 4 corner outline to locate a point without obscuring it.
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- **friend** : pseudo NATO style blue rectangle.
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- **hostile** : pseudo NATO style red circle.
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- **neutral** : pseudo NATO style green square.
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- **unknown** : pseudo NATO style yellow square.
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- **earthquake** : black circle - diameter proportional to `msg.mag`.
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#### NATO Symbology
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You can use NATO symbols from <a href="https://github.com/spatialillusions/milsymbol" target="mapinfo">milsymbol.js</a>.
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To do this you need to supply a `msg.SIDC` instead of an icon, for example:
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msg.payload = { "name": "Emergency Medical Operation",
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"lat": 51.05,
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"lon": -1.35,
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"SIDC": "ENOPA-------",
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"options": { "fillOpacity":0.8 }
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}
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SIDC codes can be generated using the online tool - https://spatialillusions.com/unitgenerator/
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There are lots of extra options you can specify as `msg.options` - see the <a href="https://github.com/spatialillusions/milsymbol/tree/master/docs" target="mapinfo">milsymbol docs here</a>.
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### Buildings
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The OSM Buildings layer is available in the layers menu. You can replace this with a
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building of your own by sending a `msg.payload.command.map` containing an `overlay`
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and a `geojson` property. The geojson property should be a GeoJSON Feature Collection
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as per the OSMBuildings spec. For example in a function node:
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var geo = { "type": "FeatureCollection",
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"features": [
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{
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"type": "Feature",
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"properties": {
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"color": "rgb(0,0,255)",
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"roofColor": "rgb(128,128,255)",
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"height": 20,
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"minHeight": 0
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},
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"geometry": {
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"type": "Polygon",
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"coordinates": [
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[
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[-1.356221,51.048611],
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[-1.356039,51.048672],
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[-1.355765,51.048311],
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[-1.355937,51.048237],
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[-1.356221,51.048611]
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]
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]
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}
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}
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]
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}
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var m = {overlay:"Golf Clubhouse", geojson:geo, fit:true};
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msg.payload = {command:{map:m, lat:51.0484, lon:-1.3558}};
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return msg;
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**Note**: the object you supply will replace the whole buildings layer. To delete the building send a msg with a name and the building property set to "" (blank string).
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#### Buildings 3D view
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A 3D map view has now been added as **worldmap/index3d.html** using the mapbox api - the msg can support `msg.command.pitch` and `msg.command.bearing` to angle the view, for example:
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msg.payload = { "command": { "zoom":18, "pitch":60, "bearing":80 } }
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The `icon` can be specified as a person, block, bar, or "anything else" - they will render slightly differently - all units are approximate. They will be positioned at the `lat`, `lon` as normal but also at the `msg.payload.height` - where height is in meters above the surface of the map (which may or may not relate to altitude...)
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`msg.payload.icon` can be
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- person : 1m x 1m x 2m tall
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- block : 5m x 5m x 5m cube
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- bar : a bar from the surface up to the specified minHeight
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- (else) : 1.5m x 1.5m x 1.5m cube
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in addition existing male, female, fa-male and fa-female icons are all represented as the person shape.
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`msg.iconColor` can be used to colour the icons.
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**NOTES**
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- There is currently no way to add labels, popups, or make the icons clickable.
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- The 3D only really works at zoomed in scales 16+ due to the small size of the icons. They are not scale independent like icons on the normal map.
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- As this uses the mapbox api you may wish to edit the index3d.html code to include your api key to remove any usage restrictions.
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- This view is a side project to the Node-RED Worldmap project so I'm happy to take PRs but it probably won't be actively developed.
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### Areas and Lines
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If the msg.payload contains an **area** property - that is an array of co-ordinates, e.g.
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... , "area": [ [51.05, -0.08], [51.5, -1], [51.2, -0.047] ], ...
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then rather than draw a point and icon it draws the polygon. Likewise if it contains a
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**line** property it will draw the polyline.
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- **color** : can set the colour of the polygon or line.
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- **fillColor** : can set the fill colour of the polygon.
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- **fillOpacity** : can set the opacity of the polygon fill colour.
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- **dashArray** : optional dash array for polyline.
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- **name** : is used as the id key - so can be redrawn/moved.
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- **layer** : declares which layer you put it on..
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### Circles
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If the msg.payload contains a **radius** property, as well as name, lat and lon, then rather
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than draw a point it will draw a circle. The *radius* property is specified in meters.
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msg.payload = { "name":"A3090", "lat":51.05, "lon":-1.35, "radius":3000 }
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As per Areas and Lines you may also specify *color*, *fillColor*, and *layer*.
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If the payload contains a **sdlat** and **sdlon** property instead of *radius* an ellipse will be drawn. The sdlat and sdlon propertys specify the semi-axes of the ellipse.
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These are specified in the Latitude/Longitude format.
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### Options
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Areas, Lines and Circles can also specify more optional properties:
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- color
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- fillColor
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- stroke
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- weight
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- opacity
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- fill
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- fillOpacity
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- dashArray
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- clickable (if true sets the passed in name as Popup)
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## Drawing
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A single *right click* will allow you to add a point to the map - you must specify the `name` and optionally the `icon` and `layer`.
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Right-clicking on an icon will allow you to delete it.
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If you select the **drawing** layer you can also add polylines, polygons and rectangles.
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## Events from the map
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The **worldmap in** node can be used to receive various events from the map. Examples of messages coming FROM the map include:
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{ "action": "connected" } // useful to trigger delivery or redraw of points
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{ "action": "disconnect", "clients": 1 } // when a client disconnects - reports number remaining
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{ "action": "click", "name":"Jason", "layer":"gps", "icon":"male", "iconColor":"blue", "lat":51.024985, "lon":-1.39698 } // when a marker is clicked
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{ "action": "move", "name":"Jason", "layer":"gps", "icon":"male", "iconColor":"blue", "lat":51.044632, "lon":-1.359901 } // when a marker is moved
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{ "action": "delete", "name": "Jason" } // when a point or shape is deleted
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{ "action": "point", "lat": "50.60634", "lon": "-1.66580", "point": "Jason,male,gps" }
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{ "action": "draw", "type": "rectangle", "points": [ { "lat": 50.61243889044519, "lng": -1.5913009643554688 }, { "lat": 50.66665471366635, "lng": -1.5913009643554688 }, { "lat": 50.66665471366635, "lng": -1.4742279052734375 }, { "lat": 50.61243889044519, "lng": -1.4742279052734375 } ] }
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{ "action": "layer", "name": "myLayer" } // when a map layer is changed
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{ "action": "addlayer", "name": "myLayer" } // when a new map layer is added
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{ "action": "dellayer", "name": "myLayer" } // when a new map layer is deleted
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{ "action": "button", "name": "My Fancy Button" } // when a user defined button is clicked
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All actions also include a `msg._sessionid` property that indicates which client session they came from. Any msg sent out that include this will ONLY to that session - so you can target map updates to certain sessions only if required.
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## Controlling the map
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You can also control the map via the node, by sending in a msg.payload containing a **command** object. Multiple parameters can be specified in one command.
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Optional properties include
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- **lat** - move map to specified latitude.
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- **lon** - move map to specified longitude.
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- **zoom** - move map to specified zoom level (1 - world, 13 to 20 max zoom depending on map).
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- **layer** - set map to specified base layer name - `{"command":{"layer":"Esri"}}`
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- **search** - search markers on map for name containing `string`. If not found in existing markers, will then try geocoding looking using Nominatim. An empty string `""` clears the search results. - `{"command":{"search":"Winchester"}}`
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- **showlayer** - show the named overlay(s) - `{"command":{"showlayer":"foo"}}` or `{"command":{"showlayer":["foo","bar"]}}`
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- **hidelayer** - hide the named overlay(s) - `{"command":{"hidelayer":"bar"}}` or `{"command":{"hidelayer":["bar","another"}}`
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- **side** - add a second map alongside with slide between them. Use the name of a *baselayer* to add - or "none" to remove the control. - `{"command":{"side":"Esri Satellite"}}`
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- **split** - once you have split the screen - the split value is the % across the screen of the split line. - `{"command":{"split":50}}`
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- **map** - Object containing details of a new map layer:
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- **name** - name of the map base layer OR **overlay** - name of overlay layer
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- **url** - url of the map layer
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- **opt** - options object for the new layer
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- **wms** - boolean, specifies if the data is provided by a Web Map Service
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- **bounds** - sets the bounds of an Overlay-Image. 2 Dimensional Array that defines the top-left and bottom-right Corners (lat/lon Points)
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- **heatmap** - set heatmap options object see https://github.com/Leaflet/Leaflet.heat#reference
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- **clear** - layer name - to clear a complete layer and remove from layer menu
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- **panlock** - lock the map area to the current visible area. - `{"command":{"panlock":true}}`
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- **zoomlock** - locks the zoom control to the current value and removes zoom control - `{"command":{"zoomlock":true}}`
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- **hiderightclick** - disables the right click that allows adding or deleting points on the map - `{"command":{"hiderightclick":true}}`
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- **button** - if supplied with a `name` and `icon` property - adds a button to provide user input - sends
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a msg `{"action":"button", "name":"the_button_name"}` to the worldmap in node. If supplied with a `name` property only, it will remove the button. Optional `position` property can be 'bottomright', 'bottomleft',
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'topleft' or 'topright' (default).
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#### To switch layer, move map and zoom
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msg.payload.command = { "layer":"Esri Satellite", "lat":51, "lon":3, "zoom":10 };
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#### To add and remove a user defined button
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to add a button bottom right
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msg.payload.command = { "button": { "name":"My Fancy Button", "icon": "fa-star", "position":"bottomright" } };
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When clicked the button will send an event to the `worldmap in` node containing `{"action":"button", "name","My Fancy Button"}` - this can then be used to trigger other map commands or flows.
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to remove
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msg.payload.command = { "button": { "name":"My Fancy Button" } };
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#### To draw a heavily customized Circle on a layer
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msg.payload.command = {
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"name": "circle",
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"lat": 51.515,
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"lon": -0.1235,
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"radius": 10,
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"layer": "drawing",
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"iconColor": '#464646',
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"stroke": false,
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"fillOpacity": 0.8,
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"clickable": true
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};
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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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"overlay": "myGeoJSON",
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"geojson": { your geojson feature as an object },
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"opt": { optional geojson options, style, etc },
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"fit": true
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};
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The geojson features may contain a `properties` property. That may also include a `style` with properties - stroke, stroke-width, stroke-opacity, fill, fill-opacity. Any other properties will be listed in the popup.
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The `opt` property is optional. See the <a href="https://leafletjs.com/examples/geojson/">Leaflet geojson docs</a> for more info on possible options. Note: only simple options are supported as functions cannot be serialised.
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The `fit` property is optional. If present the map will automatically zoom to fit the area relevant to the geojson.
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see http://leafletjs.com/examples/geojson/ for more details about options for opt.
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#### To add a new KML, GPX, or TOPOJSON overlay
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As per the geojson overlay you can also inject a KML layer, GPX layer or TOPOJSON layer. The syntax is the same but with either a `kml` property containing the KML string - a `gpx` property containing a GPX string - or a `topojson` property containing the topojson.
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msg.payload.command.map = {
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"overlay": "myKML",
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"kml": "<kml>...your kml placemarks...</kml>"
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};
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For GPX and KML layers, it is possible to define which icon to use for point markers by adding the
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following properties to `msg.payload.command.map`:
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- **icon** : <a href="https://fontawesome.com/v4.7.0/icons/" target="mapinfo">font awesome</a> icon name.
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- **iconColor** : Standard CSS colour name or #rrggbb hex value.
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Again the `fit` property can be added to make the map zoom to the relevant area.
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#### To add a Velocity Grid Overlay
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msg.payload.command.map = {
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"overlay": "myWind",
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"velocity": {
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"displayValues": true,
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"displayOptions": {
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"velocityType": "Global Wind",
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"displayPosition": "bottomleft",
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"displayEmptyString": "No wind data"
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},
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"maxVelocity": 15,
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"data": [Array of data as per format referenced below]
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}
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};
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see https://github.com/danwild/leaflet-velocity for more details about options and data examples.
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#### To add an Image Overlay
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in a function node:
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var imageBounds = [[40.712216, -74.22655], [40.773941, -74.12544]];
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msg.payload = { command : { lat:40.74, lon:-74.175, zoom:13 } };
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msg.payload.command.map = {
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overlay: "New York Historical",
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url: 'http://www.lib.utexas.edu/maps/historical/newark_nj_1922.jpg',
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bounds: imageBounds,
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opt: { opacity:1.0, attribution:"© University of Texas" }
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};
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#### To clear a layer from the map
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msg.payload.command.clear = "name of your layer/overlay to remove";
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### Using a local Map Server (WMS server)
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IMHO the easiest map server to make work is the <a href="http://www.mapserver.org/" target="mapinfo">mapserver</a> package in Ubuntu / Debian. Usually you will start with
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sudo apt-get install mapserver-bin cgi-mapserver gdal-bin
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Configuring that, setting up your tiles, and creating a .map file is way beyond the scope of this README so I will leave that as an exercise for the reader. Once set up you should have a cgi process you can run called `mapserv`, and a `.map` file that describes the layers available from the server.
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Create and edit these into an executeable file called **mapserv**, located in this node's directory, typically
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`~/.node-red/node_modules/node-red-contrib-web-worldmap/mapserv`, for example:
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#! /bin/sh
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# set this to the path of your WMS map file (which in turn points to your tiles)
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MS_MAPFILE=~/Data/maps/uk.map
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export MS_MAPFILE
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# and set this to the path of your cgi-mapserv executable
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/usr/bin/mapserv
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You can then add a new WMS Base layer by injecting a message like
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msg.payload.command.map = {
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"name": "Local WMS",
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"url": "http://localhost:1880/cgi-bin/mapserv", // we will serve the tiles from this node locally.
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"opt": {
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"layers": "gb", // specifies a layer in your map file
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"format": "image/png",
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"transparent": true,
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"attribution": "© Ordnance Survey, UK"
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},
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"wms": true // set to true for WMS type mapserver
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}
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## Demo Flow
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The following example gets recent earthquakes from USGS, parses the result,
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formats up the msg as per above and sends to the node to plot on the map.
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It also shows how to zoom and move the map or add a new layer.
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[{"id":"86457344.50e6b","type":"inject","z":"745a133b.dd6dec","name":"","topic":"","payload":"","payloadType":"none","repeat":"","crontab":"","once":false,"x":190,"y":2420,"wires":[["9a142026.fa47f"]]},{"id":"9a142026.fa47f","type":"function","z":"745a133b.dd6dec","name":"add new layer","func":"msg.payload = {};\nmsg.payload.command = {};\n\nvar u = 'http://{s}.tile.openstreetmap.fr/hot/{z}/{x}/{y}.png';\nvar o = { maxZoom: 19, attribution: '© OpenStreetMap'};\n\nmsg.payload.command.map = {name:\"OSMhot\", url:u, opt:o};\nmsg.payload.command.layer = \"OSMhot\";\n\nreturn msg;","outputs":1,"noerr":0,"x":420,"y":2420,"wires":[["c643e022.1816c"]]},{"id":"c643e022.1816c","type":"worldmap","z":"745a133b.dd6dec","name":"","x":750,"y":2460,"wires":[]},{"id":"2998e233.4ba64e","type":"function","z":"745a133b.dd6dec","name":"USGS Quake monitor csv re-parse","func":"msg.payload.lat = msg.payload.latitude;\nmsg.payload.lon = msg.payload.longitude;\nmsg.payload.layer = \"earthquake\";\nmsg.payload.name = msg.payload.id;\nmsg.payload.icon = \"globe\";\nmsg.payload.iconColor = \"orange\";\n\ndelete msg.payload.latitude;\ndelete msg.payload.longitude;\t\nreturn msg;","outputs":1,"noerr":0,"x":540,"y":2560,"wires":[["c643e022.1816c"]]},{"id":"e72c5732.9fa198","type":"function","z":"745a133b.dd6dec","name":"move and zoom","func":"msg.payload = { command:{layer:\"Esri Terrain\",lat:0,lon:0,zoom:3} };\nreturn msg;","outputs":1,"noerr":0,"x":420,"y":2460,"wires":[["c643e022.1816c"]]},{"id":"12317723.589249","type":"csv","z":"745a133b.dd6dec","name":"","sep":",","hdrin":true,"hdrout":"","multi":"one","ret":"\\n","temp":"","x":390,"y":2500,"wires":[["2998e233.4ba64e"]]},{"id":"10e5e5f0.8daeaa","type":"inject","z":"745a133b.dd6dec","name":"","topic":"","payload":"","payloadType":"none","repeat":"","crontab":"","once":false,"x":190,"y":2460,"wires":[["e72c5732.9fa198"]]},{"id":"b6917d83.d1bac","type":"http request","z":"745a133b.dd6dec","name":"","method":"GET","url":"http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/2.5_day.csv","x":270,"y":2560,"wires":[["12317723.589249"]]},{"id":"3842171.4d487e8","type":"inject","z":"745a133b.dd6dec","name":"Quakes","topic":"","payload":"","payloadType":"none","repeat":"900","crontab":"","once":false,"x":200,"y":2500,"wires":[["b6917d83.d1bac"]]}]
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Car icon made by <a href="http://www.freepik.com" title="Freepik">Freepik</a> from <a href="http://www.flaticon.com" title="Flaticon">www.flaticon.com</a> is licensed by <a href="http://creativecommons.org/licenses/by/3.0/" title="Creative Commons BY 3.0" target="mapinfo">CC 3.0 BY</a>.</div>
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