geolocation

I'm building a map application and have noticed that although IE9 supports the geolocation api it incorrectly calculates the latitude/longitude. Other users have also noticed this http://social.technet.microsoft.com/Forums/en-IE/ieitprocurrentver/thread/aea4db4e-0720-44fe-a9b8-09917e345080 , but no amount of googling brings up any results from developer blogs/more technical readers... which I find just bizarre, is no one testing their geolocation code in IE9!? Here is my example code: https://gist.github.com/1710256 Does anyone here know why this would be because it makes feature detecting the

If you have a latitude and longitude stored in your database and need to calculate the distance between two coordinates. How can you calculate it using a MySQL function? jpgunter After searching around for awhile, I gave up and wrote it myself. I was able to adapt some other code to the following MySQL function. DELIMITER $$ /* Takes two latitudes and longitudes in degrees. You could comment out the conversion if you want to pass as radians. Calculate the distance in miles, change the radius to the earth's radius in km to get km. */ DROP FUNCTION IF EXISTS GETDISTANCE$$ CREATE FUNCTION

how do one determine location based on ip? I'm not asking for any product or service, but rather how to go about implementing it technically. The ip to country is a rather static mapping. What about more specific locations? geobyte is a good service to locate ip address. If you are thinking about an algorithm to find location based on IP, I think there is none. It is basically a database look up and you will retrieve the location based on the IP address. 来源： https://stackoverflow.com/questions/7337692/how-to-determine-location-based-on-ip

Has anyone out there had to deal with and managed to find a viable workaround for the Firefox 5 geolocation issue I posted in the following bug report. It's easier to link to the report than re-describe it here. https://bugzilla.mozilla.org/show_bug.cgi?id=675533 Surely I'm not the only one on the planet this has bitten. This doesn't really solve the root of your problem but my strategy for handling this is setting a default location point that I use right away (not waiting for the geolocation question to be answered). If I get a location from the user, I just change it to the new location. If

Suppose I have an ordered array containing points (lat, lon) describing a path, and I also have a point (lat, lon) describing my current location. How can I project the point onto the path (and place the point in the appropriate place in the array)? What I tried is just simply by searching for the nearest two points and assume it's in the middle of them. It's a good guess, but sometimes fails. What would be a good way of doing this? I see it like this: p0,p1 are path line segment endpoints p is your position q' closest point on line in 3D cartessian q is q' corrected by spherical projection So

Its is possible get the coordinates(latitude and longitude), of a geo location using just the geo address (country, state, city, street, etc...), on Qt c++? I know the libraries QGeoCoordinates, QGeoLocation and QGeoAddress, but i don´t know if is possible get coordinates from an address through them. Every help is welcome. I needed some time to master this but finally I got it working. At first I tried the classes mentioned by you: QGeoAddress , QGeoLocation , QGeoCoordinate : // standard C++ header: #include <iostream> // Qt header: #include <QGeoAddress> #include <QGeoCoordinate> #include

Is it possible to get the geolocation of a user without the browser prompt? Here's the code sample from W3 <script> var x = document.getElementById("demo") function getLocation(){ if(navigator.geolocation){ navigator.geolocation.getCurrentPosition(showPosition); } else { x.innerHTML="Geolocation is not supported by this browser.";} } function showPosition(position){ x.innerHTML="Latitude: " + position.coords.latitude + "<br>Longitude: " + position.coords.longitude; } </script> Is there any preventPrompt() -like function ? No you cant prevent the prompt, its a security feature cause not every