O forgot to say I found the answer eventually. The application is to determine compass direction of a transit vehicle and its destination. Essentially, fancy math for acquiring curvature of Earth, finding an angle/compass reading, and then matching that angle with a generic compass value. You could of course just keep the compassReading and apply … Read more
Here is a basic code example using HTML5 geolocation to get the user’s position. It then calls NearestCity() and calculates the distance (km) from the location to each city. I passed on using the Haversine formulae and instead used the simpler Pythagoras formulae and an equirectangular projection to adjust for the curvature in longitude lines. … Read more
In addition to the answer from DaveAlden, I had to remove the old version of the geolocation plugin and add the new one. Then I had to remove/add the Cordova iOS platform. Only then could I add NSLocationWhenInUseUsageDescription to the .plist file with success. First, remove/add the geolocation plugin: cordova plugin rm org.apache.cordova.geolocation cordova plugin … Read more
FAQ: https://developers.google.com/maps/faq#geocoder_differences The API geocoder finds postal addresses. The Maps geocoder uses lots of data, including business data, to find results. There is the Places API which can find locations based on type/class, but it may not work for business names. Documentation
IS THERE ANYTHING WRONG With this query? In my opinion the WHERE clause is going to be slow because of the maths involved, and the use of functions in the WHERE clause will prevent the database using an index to speed the query – so, in effect, you will examine every restaurant in the database, … Read more
Use the geo: type uri. <a href=”https://stackoverflow.com/questions/15745096/geo:38.897096,-77.036545″>open map</a> and the user will get the choice of opening any of the mapping applications installed on their device.
My guess is that you are running this on an Android 6.0+ emulator and you have a targetSdkVersion of 23 or higher. In that case, ACCESS_COARSE_LOCATION and ACCESS_FINE_LOCATION are part of the Android 6.0 runtime permission system. Either revise your app to participate in this system, or drop your targetSdkVersion below 23.
Start by Comparing the distance between latitudes. Each degree of latitude is approximately 69 miles (111 kilometers) apart. The range varies (due to the earth’s slightly ellipsoid shape) from 68.703 miles (110.567 km) at the equator to 69.407 (111.699 km) at the poles. The distance between two locations will be equal or larger than the … Read more
I am currently in Tokyo, and I used to be in Switzerland. Yet, my location until some days ago was not pinpinted exactly, except in the broad Tokyo area. Today I tried, and I appear to be in Switzerland. How? Well the secret is that I am now connected through wireless, and my wireless router … Read more
By “Decimal coordinates” do you mean latitude and longitude (also known as the decimal degree)? If so, what you’re trying to do is pretty easy: Given a DMS (Degrees, Minutes, Seconds) coordinate such as W87°43′41″, it’s trivial to convert it to a number of decimal degrees using the following method: Calculate the total number of … Read more