geolocation | 易学教程

Decoding the Google Maps embedded parameters

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The context I would like to be able to extract the location of Google Maps embedded in a website (random example found at the bottom of this website ). <iframe src="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d3128.340699934565!2d-0.46482818466529047!3d38.3642391796565!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0xd62377123a70817%3A0x85e89b65fcf7c648!2sCalle+Cruz+de+Piedra%2C+4%2C+03015+Alicante!5e0!3m2!1ses!2ses!4v1476192292052" width="100%" height="350" frameborder="0" style="border:0" allowfullscreen=""></iframe> So, basically I want to extract the pinpoint location from the

Google maps API - Center map on client's current location

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问题 I've looked at the various other times this question has been asked but I can't quite put a finger on where I'm going wrong, here's my code: <html> <head> <title> Map </title> <style> html, body, #map-canvas { margin: 0; padding: 0; height: 500px; width: 800px;} </style> <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script> <script> var map; function initialize() { var myLatlng1 = new google.maps.LatLng(53.65914, 0.072050); var mapOptions = { zoom: 10, center:

How to get country code and currency code by IP-address?

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问题 I am new in zend Framework. And i want to get currency code, country code by the ip-address. Can i have any example url?. Please Help me... Thanks in advance. 回答1: You can use my service, the http://ipinfo.io API to get the country code: function get_country($ip) { return file_get_contents("http://ipinfo.io/{$ip}/country"); } echo get_country("8.8.8.8"); // => US If you're interested in other details you could make a more generic function: function ip_details($ip) { $json = file_get_contents(

Fetch Latitude Longitude by passing postcodes to maps.google.com using Javascript

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问题 I have Postcode in my large database, which contains values like SL5 9JH, LU1 3TQ etc. Now when I am pasting above postcode to maps.google.com it's pointing to a perfect location.. My requirement is like I want to pass post codes to maps.google.com and it should return a related latitude and longitude of that pointed location, that I want to store in my database. So, most probably there should be some javascript for that... If anybody have another idea regarding that please provide it..

getting users geolocation via html5 and javascript

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问题 I am trying to get the users geolocation via the html5 geolcation api, and i use the following snippet for it: if (navigator.geolocation) { var timeoutVal = 10 * 1000 * 1000; navigator.geolocation.getCurrentPosition( displayPosition, displayError, { enableHighAccuracy: true, timeout: timeoutVal, maximumAge: 0 } ); } else { // DO SOME STUFF HERE } function displayPosition(position) { // configuration var myZoom = 12; var myMarkerIsDraggable = true; var myCoordsLenght = 6; var defaultLat =

Google App Engine Geohashing

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问题 I am writing a web application using GWT and App Engine. My application will need to post and query items based on their latitude, longitude. As a result of google's distributed database design you can't simple query a set of inequalities. Instead they suggest doing geohashing. The method is described on this page. http://code.google.com/appengine/articles/geosearch.html Essentially you pre compute a bounding box so that you can query items that have been tagged with that bounding box. There

Android Phonegap - How to Open Native Google Maps Application

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I'm working on an Android application using Phonegap and am having trouble figuring out how to open the native Google Maps application to display directions. I don't have any issue opening a map by inserting a URL but opening the application has me stumped. So far I have only been able to find Phonegap related suggestions for development on the iOS platform. I have added Google Maps to the whitelist permissions, am including the correct Cordova.js file and google maps link in my script tag, have the correct permissions in my AndroidManifest.xml file, included Cordova.jar and Google Map API in

ACCESS_FINE_LOCATION permission error emulator only

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I'm having a weird error while using the emulator ONLY. I found one question that has the same issue 9 months ago with no answers at all... I'm using google play services locations to get locations in my app and I'm sure of my manifest permissions and everything works perfectly on my phone, the problem occurs when using an emulator only, and I tried different emulators on both my iMac and Windows machines. I doubt that emulators don't support this basic function! here is my manifest code: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android

Center of gravity of a polygon

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I am trying to write a PHP function that will calculate the center of gravity of a polygon. I've looked at the other similar questions but I can't seem to find a solution to this. My problem is that I need to be able to calculate the center of gravity for both regular and irregular polygons and even self intersecting polygons. Is that possible? I've also read that: http://paulbourke.net/geometry/polyarea/ But this is restricted to non self intersecting polygons. How can I do this? Can you point me to the right direction? The center of gravity (also known as "center of mass" or "centroid" can

Get direction (compass) with two longitude/latitude points

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I'm working on a "compass" for a mobile-device. I have the following points: point 1 (current location): Latitude = 47.2246, Longitude = 8.8257 point 2 (target location): Latitude = 50.9246, Longitude = 10.2257 Also I have the following information (from my android-phone): The compass-direction in degree, wich bears to the north. For example, when I direct my phone to north, I get 0° How can I create a "compass-like" arrow wich shows me the direction to the point? Is there a mathematic-problem for this? thanks! EDIT: Okay I found a solution, it looks like this: /** * Params: lat1, long1 =>