Questions tagged [latitude-longitude]
Managing data about geographic point locations, using a latitude-longitude pair (degrees north/south, and east/west, respectively) per point.
latitude-longitude
2,948
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Calculate distance between two latitude-longitude points? (Haversine formula)
How do I calculate the distance between two points specified by latitude and longitude?
For clarification, I'd like the distance in kilometers; the points use the WGS84 system and I'd like to ...
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What is the simplest and most robust way to get the user's current location on Android?
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 ...
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23
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What is the ideal data type to use when storing latitude / longitude in a MySQL database?
Bearing in mind that I'll be performing calculations on lat / long pairs, what datatype is best suited for use with a MySQL database?
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449
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How to get a time zone from a location using latitude and longitude coordinates?
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 ...
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32
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Calculate distance between 2 GPS coordinates
How do I calculate distance between two GPS coordinates (using latitude and longitude)?
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7
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What datatype to use when storing latitude and longitude data in SQL databases? [duplicate]
When storing latitude or longitude data in an ANSI SQL compliant database, what datatype would be most appropriate? Should float be used, or decimal, or ...?
I'm aware that Oracle, MySql, and SQL ...
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7
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What are the lengths of Location Coordinates, latitude and longitude? [closed]
How many digits can latitude and longitude have, before the decimal, and after the decimal?
Here is an example I am getting from the location sent by a Windows Phone device:
Latitude=-63572375290155
...
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7
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Which data type for latitude and longitude?
I am newbie to PostgreSQL and PostGIS. I want to store latitude and longitude values in PostgreSQL 9.1.1 database table. I will calculate distance between two points, find nearer points by using this ...
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187
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23
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Calculate the center point of multiple latitude/longitude coordinate pairs
Given a set of latitude and longitude points, how can I calculate the latitude and longitude of the center point of that set (aka a point that would center a view on all points)?
EDIT: Python ...
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181
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9
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Preferred order of writing latitude & longitude tuples in GIS services
When dealing with GIS source code you often need to write latitude and longitude coordinate tuples.
E.g. in Google Maps links (123, 456):
http://maps.google.com/maps/ms?msid=214518704716144912556....
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Calculating Distance between two Latitude and Longitude GeoCoordinates
I'm calculating the distance between two GeoCoordinates. I'm testing my app against 3-4 other apps. When I'm calculating distance, I tend to get an average of 3.3 miles for my calculation whereas ...
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136
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4
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65k
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Double or decimal for latitude/longitude values in C#
What is the best data type to use when storing geopositional data in C#? I would use decimal for its exactness, but operations on decimal floating point numbers are slower then binary floating point ...
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17
answers
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How to calculate the bounding box for a given lat/lng location?
I have given a location defined by latitude and longitude.
Now i want to calculate a bounding box within e.g. 10 kilometers of that point.
The bounding box should be defined as latmin, lngmin and ...
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14
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How can I get city name from a latitude and longitude point?
Is there a way to get a city name from a latitude and longitude point using the google maps api for javascript?
If so could I please see an example?
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15
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Get lat/long given current point, distance and bearing
Given an existing point in lat/long, distance in (in KM) and bearing (in degrees converted to radians), I would like to calculate the new lat/long. This site crops up over and over again, but I just ...
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Calculating distance between two points, using latitude longitude?
Here's my try, it's just a snippet of my code:
final double RADIUS = 6371.01;
double temp = Math.cos(Math.toRadians(latA))
* Math.cos(Math.toRadians(latB))
* Math.cos(Math....
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11
answers
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What's the best way to store co-ordinates (longitude/latitude, from Google Maps) in SQL Server?
I'm designing a table in SQL Server 2008 that will store a list of users and a Google Maps co-ordinate (longitude & latitude).
Will I need two fields, or can it be done with 1?
What's the best (...
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98
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10
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Algorithm to find all Latitude Longitude locations within a certain distance from a given Lat Lng location
Given a database of places with Latitude + Longitude locations, such as 40.8120390, -73.4889650, how would I find all locations within a given distance of a specific location?
It doesn't seem very ...
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6
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Java double vs BigDecimal for latitude/longitude
When storing latitudes/longitudes which are typically of the format: 44.087585 (i.e. max 2 numbers before the dot and 6dp) do I need to bother with bigdecimals?
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Calculating distance between two geographic locations
please shed some light on this situation
Right now i have two array having latitude and longitude of nearby places and also have the user location latiude and longiude now i want to calculate the ...
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81
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2
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Function to calculate geospatial distance between two points (lat,long) using R [duplicate]
I have geocoded points in long, lat format, and I want to calculate the distance between them using R. This seems pretty straight forward, yet I can't find a function that will do it easily. I've ...
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15
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proper/best type for storing latitude and longitude
In a system level programming language like C, C++ or D, what is the best type/encoding for storing latitude and longitude?
The options I see are:
IEEE-754 FP as degrees or radians
degrees or ...
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77
votes
3
answers
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Calculate distance in meters when you know longitude and latitude in java [duplicate]
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 ...
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12
answers
97k
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How can I measure distance and create a bounding box based on two latitude+longitude points in Java?
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, ...
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76
votes
18
answers
173k
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How to convert an address to a latitude/longitude?
How would I go about converting an address or city to a latitude/longitude? Are there commercial outfits I can "rent" this service from? This would be used in a commercial desktop application on a ...
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66
votes
8
answers
113k
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How can I quickly estimate the distance between two (latitude, longitude) points?
I want to be able to get a estimate of the distance between two (latitude, longitude) points. I want to undershoot, as this will be for A* graph search and I want it to be fast. The points will be at ...
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65
votes
12
answers
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Google Maps API - how to get latitude and longitude from Autocomplete without showing the map?
I'm trying to get latitude and longitude from Autocomplete Google Maps API without showing the map. In my script autocompletion works well, but I can't get the latitude and longitude.
<...
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5
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Using Address Instead Of Longitude And Latitude With Google Maps API
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 ...
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58
votes
8
answers
143k
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Find distance between two points using latitude and longitude in mysql
Hi I have the following table
--------------------------------------------
| id | city | Latitude | Longitude |
--------------------------------------------
| 1 | 3 | 34.44444 | ...
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13
answers
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get Lat Lang from a place_id returned by autocomplete place api
I am searching the place in my apps using the google autocomplete place api and now I want to get latitude and longitude of the place that i have searched. How to get latitude and longitude from the ...
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51
votes
3
answers
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Geographic / geospatial distance between 2 lists of lat/lon points (coordinates)
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 ...
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49
votes
8
answers
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Retrieve latitude and longitude of a draggable pin via Google Maps API V3
I will explain. I managed to have a draggable pin on a map. I want to retrieve the coordinates of this point and put them into two fields: Latitude and Longitude. These coordinates will later be send ...
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votes
5
answers
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How to get the Google Map based on Latitude on Longitude?
I want to display Google map in my web page based on longitude and latitude. First user want to enter longitude and latitude in two text box's. Then click submit button I have to display appropriate ...
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votes
4
answers
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Maximum Lat and Long bounds for the world - Google Maps API LatLngBounds()
The Google Maps terrain view by default has unlimited panning of the map tile. You can use LatLngBounds() to limit this, but what are the maximum and minimum coordinates I should use to set the ...
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votes
7
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50k
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3D coordinates on a sphere to Latitude and Longitude
I've got the following information:
There exists a sphere with origin (0,0,0) and radius R.
After doing a ray-sphere intersection I know a point (XYZ) in 3D space that is on the sphere (the exact ...
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44
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7
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Get latitude and longitude based on location name with Google Autocomplete API
I have a textbox in my page which gets a location name and button with text getLat&Long. Now on clicking my button I have to show an alert of latitude and longitude of the location in the textbox. ...
- 523
44
votes
3
answers
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Converting longitude/latitude to X/Y coordinate
I created a map using Google Maps API that highlights all Minnesota counties. Basically, I created the county polygons using a set of longitudes/latitudes coordinates. Here's a screenshot of the ...
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42
votes
6
answers
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Calculating bounding box a certain distance away from a lat/long coordinate in Java
Given a coordinate (lat, long), I am trying to calculate a square bounding box that is a given distance (e.g. 50km) away from the coordinate. So as input I have lat, long and distance and as output I ...
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votes
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Find city name and country from latitude and longitude in Swift
I'm working on application in Swift3
and I have letter problem i can't find the answer for it.
How can I know city name and country short names base on latitude and longitude?
import UIKit
...
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6
answers
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R - Finding closest neighboring point and number of neighbors within a given radius, coordinates lat-long
I am trying to figure out how isolated certain points are within my data set. I am using two methods to determine isolation, the distance of the closest neighbor and the number of neighboring sites ...
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38
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8
answers
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Check if a latitude and longitude is within a circle
See this illustration:
What I would like to know is:
How to create an area (circle) when given a latitude and longitude and the distance (10 kilometers)
How to check (calculate) if a latitude and ...
- 11.3k
36
votes
1
answer
30k
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mySQL longitude and latitude query for other rows within x mile radius
I have a database populated with roughly 10k rows currently. All of them have a longitude/latitude based on the center of a zipcode. I found a query that I am now attempting to expand on, but all in ...
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2
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Is the Haversine Formula or the Vincenty's Formula better for calculating distance?
Which is better for calculating the distance between two latitude/longitude points, The Haversine Formula or The Vincenty's Formula? Why?
The distance is obviously being calculated on Earth. Does ...
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1
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Positive/Negative Latitude and Longitude values vs. Cardinal Directions [closed]
As I've been taught, lat and long are of following types:
Latitude North
Longitude West
Latitude South
Longitude East
During software development, if I receive two numeric values for lat and log, ...
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35
votes
4
answers
49k
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Getting Time Zone from Lat Long Coordinates? [duplicate]
I am trying to get the time zones for latitude and longitude coordinates but am having a few problems
The mistakes are probably very basic
I have a table in a database with around 600 rows. Each row ...
- 2,636
35
votes
8
answers
49k
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C# Sunrise/Sunset with latitude/longitude
Is there a way in C# to calculate given a latitude and longitude when the sun will set and rise for a given day?
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34
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6
answers
31k
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Determining UTM zone (to convert) from longitude/latitude
I'm writing a program which expects a number of lat/long points, and I convert them internally to UTM in order to do some calculations in metres.
The range of the lat/long points themselves is quite ...
- 56.5k
34
votes
6
answers
56k
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Longitude and latitude value from IP address
Is it possible to get the longitude and latitude value from IP address in asp.net?
If it is possible, please let me know how can I get this.
- 6,390
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votes
11
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Moving a CLLocation by x meters
I have a CLLocation defined, and I'd like to move that point x meters to the east and y meters to the south. How may I achieve that?
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8
answers
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Converting Longitude & Latitude to X Y on a map with Calibration points
If i have a jpeg map with size sizeX, sizeY
and some calibration points on the map (X, Y, Lon, Lat)
What would be the algorithm for calculating the corresponding XY point in the map with a given ...
- 2,186