latitude-longitude

How can I create my own datatype in python so that I could overwrite arithmetic operators?

由 我的未来我决定 提交于 2019-12-13 13:16:50
问题 I am currently using Python/Numpy to deal with geographical/GPS data (loving it!), and I am facing the recurring task to calculate distances between geographical points defined by a coordinate pair pn = [lon, lat] . I have a function that I use like this: dist = geodistance(p1, p2) which is analog to euclidean distance in linear algebra (vector subtraction/difference), but occurs in geodesical (spherical) space instead of rectangular euclidean space. Programmatically, euclidean distance is

Gps tracker received data,

由 一曲冷凌霜 提交于 2019-12-13 07:59:43
问题 in advance I want to appreciate any answer and suggestion on this problem, I am am working on a GPS tracker module (Model: m528), It's poorly documented so I dont have any paper on the data format which it sends, I have my own server that listens to a special port and gets the data packets sent by the module, I know the position of the latitude and longitude in the received packets, each of them have 4 bytes without N, W, S, E indicators, this are the examples which I think would help, stored

MySQL WordPress Query Returning a Distance of Zero for Some Records

由 五迷三道 提交于 2019-12-13 07:22:16
问题 I wrote a query against a WordPress Database that selects the 10 closest restaurants, ordered by distance. For some reason, the first three have a distance of zero and I can't for the life of me figure out why. Any ideas? Here is the SQL: SELECT pm1.post_id, (6371 * acos( cos( radians(51.507351) ) * cos( radians( pm1.meta_value) ) * cos( radians(pm2.meta_value) - radians(-0.127758)) + sin(radians(51.507351)) * sin( radians(pm1.meta_value))) ) AS distance, pm1.meta_value AS lat, pm2.meta_value

NoMethodError in PostsController#create undefined method `latitude=' “saving lat and long to connected tables!!”

由 一笑奈何 提交于 2019-12-13 06:09:15
问题 I am trying to post these coordinates from the metadata of the image i upload with paperclip to another table called places."so coordinates go to places table." There are columns latitude and longitude in the places table. After submitting the post i run into this error. The highlighted portion of the error is self.latitude=parse_latlong(etc....). post_id is a foreign key in the places table. This worked previously when i had latitude and longitude in the post table. but now i gave it its own

Converting cartesian coordinates to latitude/longitude

由 删除回忆录丶 提交于 2019-12-13 05:39:32
问题 How can we convert Cartesian coordinates (x, y and z) into latitude and longitude (in decimals) in Matlab? Thanks 回答1: As suggested by @H.Munster it seems like the Geodetic Toolbox - File Exchange submission contains what you need. In particular: xyz2ell - Cartesian (x,y,z) to ellipsoidal (lat,long,ht) coordinates [lat,lon,h] = xyz2ell(X,Y,Z) 来源： https://stackoverflow.com/questions/19567140/converting-cartesian-coordinates-to-latitude-longitude

Add geocode long / lat to input field with event listener

由 ℡╲_俬逩灬. 提交于 2019-12-13 05:38:57
问题 I want to populate 2 input fields with the long and lat based on a location search. I have tried many different ways of adding the listener but cannot get it to work. Looking for some help. First my Javascript and head of doc <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml"> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>

Google Maps user location

由 妖精的绣舞 提交于 2019-12-13 05:15:39
问题 I wanna set up a way in which users can place a marker on the map to tell their address and i should be able to extract the lat and long and store it in the database. Is there somekinda plugin which i can modify and use ? 回答1: First create a function that a accepts a latlng object. This function will add the info to your database and then add the marker if it was successful. function addRestaurant( latlng ) { lat = latlng.lat; lng = latlng.lng; //Code to add restaurant if ( dbase_successful )

Convert Latitude and Longitude into kms

由 谁都会走 提交于 2019-12-13 05:13:34
问题 I am building application where i am getting the user's latitude and longitude using the below code <!DOCTYPE html> <html> <body> <p>Click the button to get your coordinates.</p> <button onclick="getLocation()">Try It</button> <p id="demo"></p> <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

How to find the distance between two points given longitude and latitude in python-error?

由 允我心安 提交于 2019-12-13 04:39:11
问题 I have two locations with longitude and latitude given and I would like to get the distance between these points in python. My data set looks like below: df_TEST = pd.DataFrame({'Location': ['X'], 'Long': [ 28.63615701706], 'Lat': [ 41.0693487044612], 'Location1': ['Y'], 'Long1': [30.7158891385255], 'Lat1': [36.963486025471]}) My solution as suggested Getting distance between two points based on latitude/longitude df_TEST['distance']=geopy.distance.geodesic(( df_TEST['Long'], df_TEST['Lat']),

How to Sort Geo-points according to the distance from current location in Android

由 北城余情 提交于 2019-12-13 03:53:49
问题 I have a "Place" object with a LatLng coordinate for each: import com.google.android.gms.maps.model.LatLng; public class Place{ public String name; public LatLng latlng; public Restaurant(String name, LatLng latlng) { this.name = name; this.latlng = latlng; } } and I have an ArrayList of these Places, something like this: ArrayList<Place> places = new ArrayList<Place>(); places.add("Place 1", LatLng(90.0,90.0)); places.add("Place 2", LatLng(93.0,93.0)); places.add("Place 3", LatLng(83.0,92.0)
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