geocoding

Geocode database [closed]

只愿长相守 提交于 2019-11-27 18:13:02
Can I download address,city,state,postalcode - latitude/longitude information, that can be loaded to a db for US alone.. Also do comment about their accuracy and coverage.. I suppose all GPS devices do this.. any pointers where I can extract this info?? I tried google maps json api.. and don't like the idea that they rate limit the number of requests per second.. Thanks, Ramya Edit: What I am looking for is "address , city , state , postalcode, latitude/longitude" in csv or dump.. that I can query locally.. ofcourse.. free of cost (non commercial). On the GeoNames you could download full

Get latitude and longitude based on Address using Geocoder class in iOS

余生颓废 提交于 2019-11-27 17:52:41
问题 I got the current location based on the Longitude and Latitude values and then I also got multiple places on google map using Annotation. Now I want to get the longitude and latitude values based on the Address( i.e street,city and county).Need some guidance on how this can be achieved. Till now, this is what I have tried:- #import "ViewController.h" @interface ViewController () @end @implementation ViewController @synthesize streetField = _streetField, cityField = _cityField, countryField =

GIS: PostGIS/PostgreSQL vs. MySql vs. SQL Server? [closed]

淺唱寂寞╮ 提交于 2019-11-27 17:06:16
EDIT: I have been using Postgres with PostGIS for a few months now, and I am satisfied. I need to analyze a few million geocoded records, each of which will have latitude and longitude. These records include data of at least three different types, and I will be trying to see if each set influences the other. What database is best for the underlying data store for all this data? Here's my desires: I'm familiar with the DBMS. I'm weakest with PostgreSQL, but I am willing to learn if everything else checks out. It does well with GIS queries. Google searches suggest that PostgreSQL + PostGIS may

Can anyone recommend a free geocoding service? [closed]

拥有回忆 提交于 2019-11-27 15:24:28
问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . Whatever service that would allow something as simple as 100 geo transcoding requests (from street address to geocode) would be ideal.

How do I find the polygon nearest to a point in R?

做~自己de王妃 提交于 2019-11-27 13:16:12
问题 I have a spatial points data frame and a spatial polygons data frame. For example, my polygons would be a polygon for each block in Manhattan. And the points are people, which are scattered all over, sometimes falling in the middle of a street, which is not part of a polygon. I know how to check if a point is contained inside a polygon, but how could I assign points to their closest polygon? ## Make some example data set.seed(1) library(raster) library(rgdal) library(rgeos) p <- shapefile

Google App Engine Geohashing

大憨熊 提交于 2019-11-27 12:42:32
问题 I am writing a web application using GWT and App Engine. My application will need to post and query items based on their latitude, longitude. As a result of google's distributed database design you can't simple query a set of inequalities. Instead they suggest doing geohashing. The method is described on this page. http://code.google.com/appengine/articles/geosearch.html Essentially you pre compute a bounding box so that you can query items that have been tagged with that bounding box. There

Obtain latitude and longitude from address without the use of Google API

半腔热情 提交于 2019-11-27 11:48:03
问题 I am currently working on a large population-based database where it is required that I compute the distance between two addresses for each individual. My first train of thought was to obtain the latitude and longitude representing each address and then compute the distance. I used Google API's to obtain the latitude and longitude for these addresses via various packages in R (e.g. dismo). However Google has a restriction of 2500 requests in a 24hr period. I have about 300,000 addresses and

get city from geocoder results?

北战南征 提交于 2019-11-27 11:39:40
Having problems getting the different arrays content from geocoder results. item.formatted_address works but not item.address_components.locality? geocoder.geocode( {'address': request.term }, function(results, status) { response($.map(results, function(item) { alert(item.formatted_address+" "+item.address_components.locality) } }); // the array returned is; "results" : [ { "address_components" : [ { "long_name" : "London", "short_name" : "London", "types" : [ "locality", "political" ] } ], "formatted_address" : "Westminster, London, UK" // rest of array... any help appreciated! Dc v3nt Got

Geocode multiple addresses

半世苍凉 提交于 2019-11-27 11:36:43
I need to geocode around 200 addresses per request and do around 3,000 request per day. I will be doing this server side using PHP. I have looked at How to convert an address to a latitude/longitude? , but could not find a way for either Google Maps HTTP Request API or the Yahoo Geocoding REST API (cannot use JavaScript as this is server side) to send multiple addresses. I will be primarily using this to sort addresses based on the coordinates and if the API supports, fill in any missing data for each address. The addresses will be in the United States only. The addresses to geocode will be

Geocode an IP address? [closed]

拜拜、爱过 提交于 2019-11-27 11:21:56
Does anyone know of any open RESTful API that I can call to geocode a user's IP to the latitude and longitude? Ideally, it would be something like: http://google.com/geocode_api/?IP=1.2.3.4 and it would return the latitude and longtitude. Another free REST API with city accurate information would be http://freegeoip.net Requests are fairly straight forward. You would use something like http://freegeoip.net/{format}/{ip_or_hostname} to geocode an IP address, where format can be csv , xml or json . Their website has all the details. [UPDATE:] FreeGeoIP.net was not continuously available in the