OnMapLoadedCallback doesn’t fire until after the tiles on map are loaded. Only fires once so you’ll have to call it nine times to take nine snapshots. When you have a reference to the map set the call back. mMap.setOnMapLoadedCallback(this); When the onMapLoaded event fires take the snapshot. @Override public void onMapLoaded() { if (mMap != … Read more
Try this code.It works… try { URL url = new URL(“Enter the URL to be downloaded”); HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setRequestMethod(“GET”); urlConnection.setDoOutput(true); urlConnection.connect(); File SDCardRoot = Environment.getExternalStorageDirectory().getAbsoluteFile(); String filename=”downloadedFile.png”; Log.i(“Local filename:”,””+filename); File file = new File(SDCardRoot,filename); if(file.createNewFile()) { file.createNewFile(); } FileOutputStream fileOutput = new FileOutputStream(file); InputStream inputStream = urlConnection.getInputStream(); int totalSize = urlConnection.getContentLength(); int … Read more
I had same problem and ended up doing following thing: When I receive mapView delegate callback -(void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view (it’s time when I want to show my custom CalloutView) I use view received as parameter *(MKAnnotationView )view (which is a pin view) and simply add my custom view to that pin view using [view … Read more
Like this: library(httr) library(rjson) data <- paste0(“[“,paste(paste0(“\””,dff$address,”\””),collapse=”,”),”]”) url <- “http://www.datasciencetoolkit.org/street2coordinates” response <- POST(url,body=data) json <- fromJSON(content(response,type=”text”)) geocode <- do.call(rbind,sapply(json, function(x) c(long=x$longitude,lat=x$latitude))) geocode # long lat # San Francisco, California, United States -117.88536 35.18713 # Mobile, Alabama, United States -88.10318 30.70114 # La Jolla, California, United States -117.87645 33.85751 # Duarte, California, United States -118.29866 33.78659 … Read more
Location loc1 = new Location(“”); loc1.setLatitude(lat1); loc1.setLongitude(lon1); Location loc2 = new Location(“”); loc2.setLatitude(lat2); loc2.setLongitude(lon2); float distanceInMeters = loc1.distanceTo(loc2); Reference: http://developer.android.com/reference/android/location/Location.html#distanceTo(android.location.Location)
I’ve struggled with this myself, and with the help of this post I’ve come up with a solution. The bounding box of the ggmap object is in WGS84 (EPSG:4326), but the actual raster is in EPSG:3857. You have to hack the bounding box of the ggmap object to be in the same CRS as the … Read more
You can fix this, if you delete all nested fragments in onDestroyView(). Don’t know if it is a proper solution. public void onDestroyView() { super.onDestroyView(); Fragment fragment = (getFragmentManager().findFragmentById(R.id.map)); FragmentTransaction ft = getActivity().getSupportFragmentManager().beginTransaction(); ft.remove(fragment); ft.commit(); } And inflating them as usual in onCreateView() public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.map, container, … Read more
The answers to Haversine Formula in Python (Bearing and Distance between two GPS points) provide Python implementations that answer your question. Using the implementation below I performed 100,000 iterations in less than 1 second on an older laptop. I think for your purposes this should be sufficient. However, you should profile anything before you optimize … Read more
In my opinion, the force layout is unsuitable for the purpose of placing labels on a map. The reason is simple — labels should be as close as possible to the places they label, but the force layout has nothing to enforce this. Indeed, as far as the simulation is concerned, there is no harm … Read more
You need to convert to radians. Change it to the following: public static void midPoint(double lat1,double lon1,double lat2,double lon2){ double dLon = Math.toRadians(lon2 – lon1); //convert to radians lat1 = Math.toRadians(lat1); lat2 = Math.toRadians(lat2); lon1 = Math.toRadians(lon1); double Bx = Math.cos(lat2) * Math.cos(dLon); double By = Math.cos(lat2) * Math.sin(dLon); double lat3 = Math.atan2(Math.sin(lat1) + Math.sin(lat2), … Read more