geocoding

ggplot centered names on a map

由 ╄→гoц情女王★ 提交于 2019-12-17 08:59:19
问题 I'm attempting to use ggplot2 and maps to plot the names of the counties in NY state. My approach was to find the means of latitude and longitude by county (I assume this is the center of the county but this may be faulty thinking) and then use geom_text to plot the names on the map. It's not behaving as I anticipated as it's plotting multiple names per county. The outcome I'm looking for is that the center of each text (county) is at the center of it's respective county. In addition to

Improve centering county names ggplot & maps

由 这一生的挚爱 提交于 2019-12-17 07:29:11
问题 Early I posted a question about plotting county names on a map using ggplot and maps found HERE. My first approach was to take the means of all the lat and long coordinates per county as seen here: Thankfully Andrie had 2 suggestions to improve the centering using a center of ranges and then the coord_map() {which appears to keep the aspect ratio correct}. This imporved the centering a great deal as seen here: I think this looks better but still has some difficulties with overlap problems. I

Get street address at lat/long pair

由 南笙酒味 提交于 2019-12-17 07:05:58
问题 I've seen that it's possible to get the latitude and longitude (geocoding, like in Google Maps API) from a street address, but is it possible to do the reverse and get the street address when you know what the lat/long already is? The application would be an iPhone app (and why the app already knows lat/long), so anything from a web service to an iPhone API would work. 回答1: Google again http://nicogoeminne.googlepages.com/documentation.html http://groups.google.com/group/Google-Maps-API/web

Why doesn't file_get_contents work?

由 随声附和 提交于 2019-12-17 06:45:11
问题 Why does file_get_contents not work for me? In the test file code below, it seems that everyone's examples that I've searched for all have this function listed, but it never gets executed. Is this a problem with the web hosting service? Can someone test this code on their server just to see if the geocoding array output actually gets printed out as a string? Of course, I am trying to assign the output to a variable, but there is no output here in this test file.... <html> <head> <title>Test

How to implement auto-complete for address using Apple Map Kit

由 ε祈祈猫儿з 提交于 2019-12-17 06:36:28
问题 I want to auto-complete the address for the user as same as what google api provides in this link: https://developers.google.com/maps/documentation/javascript/places-autocomplete?hl=en How can i implement the same functionality using apple map kit? I have tried to use the Geo Coder, i wrote this for example: @IBAction func SubmitGeoCode(sender: AnyObject) { let address = "1 Mart" let coder = CLGeocoder() coder.geocodeAddressString(address) { (placemarks, error) -> Void in for placemark in

How can I get city name from a latitude and longitude point?

由 给你一囗甜甜゛ 提交于 2019-12-17 05:39:33
问题 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? 回答1: This is called Reverse Geocoding Documentation from Google: http://code.google.com/apis/maps/documentation/geocoding/#ReverseGeocoding. Sample Call to Google's geocode Web Service: http://maps.googleapis.com/maps/api/geocode/json?latlng=40.714224,-73.961452&sensor=true&key=YOUR_KEY 回答2: Here is a complete sample: <!DOCTYPE html> <html> <head

How can I get city name from a latitude and longitude point?

由 陌路散爱 提交于 2019-12-17 05:39:06
问题 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? 回答1: This is called Reverse Geocoding Documentation from Google: http://code.google.com/apis/maps/documentation/geocoding/#ReverseGeocoding. Sample Call to Google's geocode Web Service: http://maps.googleapis.com/maps/api/geocode/json?latlng=40.714224,-73.961452&sensor=true&key=YOUR_KEY 回答2: Here is a complete sample: <!DOCTYPE html> <html> <head

How to calculate the bounding box for a given lat/lng location?

由 ≡放荡痞女 提交于 2019-12-17 02:25:19
问题 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 latmax, lngmax. I need this stuff in order to use the panoramio API. Does someone know the formula of how to get thos points? Edit: Guys i am looking for a formula/function which takes lat & lng as input and returns a bounding box as latmin & lngmin and latmax & latmin. Mysql, php, c#, javascript is

Calculating Distance between two Latitude and Longitude GeoCoordinates

由 谁说胖子不能爱 提交于 2019-12-17 00:33:21
问题 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 other apps are getting 3.5 miles. It's a big difference for the calculation I'm trying to perform. Are there any good class libraries out there for calculating distance? I'm calculating it like this in C#: public static double Calculate(double sLatitude,double sLongitude, double eLatitude, double

Calculating Distance between two Latitude and Longitude GeoCoordinates

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-17 00:33:09
问题 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 other apps are getting 3.5 miles. It's a big difference for the calculation I'm trying to perform. Are there any good class libraries out there for calculating distance? I'm calculating it like this in C#: public static double Calculate(double sLatitude,double sLongitude, double eLatitude, double
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