openstreetmap

I'm writing an app that takes advantage of GPS information to determine what road/trail (or "way" in OpenStreetMaps terms) a user is on. Ways in OSM do not include width information, just a series of points connected together, so it isn't a matter of figuring out which poly box a GPS coordinate is in. The information I have is the list of points that define the trail as it bends (if it was just a straight trail, could be 2 points 1/2 mile apart). These trails are usually separated by tree-lines (say 50-300m apart) and there can be lots of them within a park so accuracy without width

I have a GPS coordinates of several points and I want to know if they are on a highway, or trunk road, or minor road, and it would be even greater if I could identify a road name. I'm using R leaflet to draw maps and I can see with OpenStreetMap that different types of roads are colored differently, and I wonder how I can extract this information. It's not a problem to use Google maps instead if it will solve my problem. I would appreciate any help. You can use revgeocode() from ggmap : library(ggmap) gc <- c(-73.596706, 45.485501) revgeocode(gc) Which gives: #[1] "4333 Rue Sherbrooke O,

Is it possible? This tells me it is, but dont know why it defines and API key. but I cannot get it to work with react-map-gl StaticMap class. The property I can see from that class is just mapStyle which would take a standard Mapbox vector tiles path/name. Does it take an object? My code does not give me an error or show the tiles I request. <DeckGL> <StaticMap mapStyle= {{ "version": 7, "sources": { "simple-tiles": { "type": "raster", "tiles":["http://a.tile.openstreetmap.org/{z}/{x}/{y}.png", "http://b.tile.openstreetmap.org/{z}/{x}/{y}.png"], "tileSize": 256 }, "power": { "type": "vector",

I'm using a map with a layer (from the example): var lonLat = new OpenLayers.LonLat(40.4088576, -86.8576718) .transform( new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984 map.getProjectionObject() // to Spherical Mercator Projection ); on moveend i'm get center coordinates: map.getCenter(); map.getZoom(); and zoom level: 4925535.4503328, -9668990.0134335, 12 Using algorithm from documentation public PointF TileToWorldPos(double tile_x, double tile_y, int zoom) { PointF p = new Point(); double n = Math.PI - ((2.0 * Math.PI * tile_y) / Math.Pow(2.0, zoom)); p.X = (float)((tile_x

I want to set "EPSG:4326" as the projection of an OpenLayers map, but when I try it, I always get "EPSG:900913". function init() { var options = { projection: new OpenLayers.Projection("EPSG:4326") // ignored }; map = new OpenLayers.Map('map', options); var layer = new OpenLayers.Layer.OSM.Osmarender("Osmarender"); map.addLayer(layer); ... alert(map.getProjection()); // returns "EPSG:900913" ... } The base map is open street map. How can I set the Projection to EPSG:4326? It is Osmarender that has a hardcoded 900913 projection, nothing to do about that. But have you considered taking things