latitude-longitude | 易学教程

What is the maximum length of latitude and longitude?

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问题 How long can latitude and longitude be? I am getting very long lengths sent by a Windows Phone device: Latitude=-63572375290155 Longitude=106744840359415 This is exceeding my table column size and I am getting errors. 回答1: The valid range of latitude in degrees is -90 and +90 for the southern and northern hemisphere respectively. Longitude is in the range -180 and +180 specifying coordinates west and east of the Prime Meridian, respectively. For reference, the Equator has a latitude of 0°,

Using Address Instead Of Longitude And Latitude With Google Maps API

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I've heard that it is possible to submit an Address instead of Longitude and Latitude and this would be much more feasible for my system. The user has to input their address when creating their profile and their profile afterwards will then display a Google Maps of their house. I currently have the Google Maps API working perfectly with Longitude and Latitude: <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <link rel="stylesheet" type="text/css" href="css.css" /> <title>Login Page</title> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <style

Find distance between two points using latitude and longitude in mysql

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问题 Hi I have the following table -------------------------------------------- | id | city | Latitude | Longitude | -------------------------------------------- | 1 | 3 | 34.44444 | 84.3434 | -------------------------------------------- | 2 | 4 | 42.4666667 | 1.4666667 | -------------------------------------------- | 3 | 5 | 32.534167 | 66.078056 | -------------------------------------------- | 4 | 6 | 36.948889 | 66.328611 | -------------------------------------------- | 5 | 7 | 35.088056 | 69

Calculate distance in meters when you know longitude and latitude in java [duplicate]

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问题 Possible Duplicate: Working with latitude/longitude values in Java Duplicate: Working with latitude/longitude values in Java How do I calculate distance between two latitude longitude points? I need to calculate the distance between two points given by two coordinates. The project I am working on is a Java-project, so Java-code will be great, but pseudo-code can also be given, then I can implement it myself :) As you probably know, there are three ways to represent coordinates: Degrees

How can I measure distance and create a bounding box based on two latitude+longitude points in Java?

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问题 I am wanting to find the distance between two different points. This I know can be accomplished with the great circle distance. http://www.meridianworlddata.com/Distance-calculation.asp Once done, with a point and distance I would like to find the point that distance north, and that distance east in order to create a box around the point. 回答1: We've had some success using OpenMap to plot a lot of positional data. There's a LatLonPoint class that has some basic functionality, including

Using Address Instead Of Longitude And Latitude With Google Maps API

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问题 I\'ve heard that it is possible to submit an Address instead of Longitude and Latitude and this would be much more feasible for my system. The user has to input their address when creating their profile and their profile afterwards will then display a Google Maps of their house. I currently have the Google Maps API working perfectly with Longitude and Latitude: <head> <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"/> <link rel=\"stylesheet\" type=\"text/css\" href=\"css

Geographic / geospatial distance between 2 lists of lat/lon points (coordinates)

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问题 I have 2 lists ( list1 , list2 ) with latitude / longitudes of various locations. One list ( list2 ) has locality names that list1 does not have. I want an approximate locality for every point in list1 as well. So I want to take a point in list1 , try to look for the nearest point in list2 and take that locality. I repeat for every point in list1 . It also want the distance (in meters) and the index of the point (in list1 ) so I can build some business rules around it - essentially these are

Calculate distance between 2 GPS coordinates

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问题 How do I calculate distance between two GPS coordinates (using latitude and longitude)? 回答1: Calculate the distance between two coordinates by latitude and longitude, including a Javascript implementation. West and South locations are negative. Remember minutes and seconds are out of 60 so S31 30' is -31.50 degrees. Don't forget to convert degrees to radians . Many languages have this function. Or its a simple calculation: radians = degrees * PI / 180 . function degreesToRadians(degrees) {

How to get a time zone from a location using latitude and longitude coordinates?

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问题 There are too many questions on StackOverflow about resolving a time zone from a location. This community wiki is an attempt at consolidating all of the valid responses. Please update my answer, or add your own as you see fit. The Question Given the latitude and longitude of a location, how does one know what time zone is in effect in that location? In most cases, we are looking for an IANA/Olson time zone id, although some services may return just a UTC offset, or some other time zone

What is the simplest and most robust way to get the user's current location on Android?

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问题 The LocationManager API on Android seems like it\'s a bit of a pain to use for an application that only needs an occasional and rough approximation of the user\'s location. The app I\'m working on isn\'t really a location app per se, but it does need to get the user\'s location in order to display a list of nearby businesses. It doesn\'t need to worry about if the user is moving around or anything like that. Here\'s what I\'d like to do: Show the user a list of nearby locations. Preload the