Geocoding With OpenStreetMap

Kevin Feasel

2018-01-10

R

Dmitry Kisler shows how to geocode addresses in R using the OpenStreetMap API:

It is quite likely to get address info when scraping data from the web, but not geo-coordinates which may be required for further analysis like clustering. Thus geocoding is often needed to get a location’s coordinates by its address.

There are several options, including one of the most popular, google geocoding API. This option can be easily implemented into R with the function geocode from the library ggmap. It has the limitation of 2500 request a day (when it’s used free of charge), see details here.

To increase the number of free of charge geocoding requests, OpenStreetMap (OSM) Nominatim API can be used. OSM allows up to 1 request per second (see the usage policy), that gives about 35 times more API calls compared to the google geocoding API.

Click through for the script.

Related Posts

Principal Component Analysis With Stack Overflow Data

Julia Silge explains Principal Component Analysis and shows us an example using Stack Overflow data: We have tidy data, both because that’s what I get when querying our databases and because it is useful for exploratory data analysis when preparing for a machine learning algorithm like PCA. To implement PCA, we need a matrix, and […]

Read More

Using xplain To Interpret Model Results

Joachim Zuckarelli walks us through the xplain package in R: The above XML produces the following output (don’t worry too much about the call of xplain(), we will discuss later on in more detail how to work with the xplain() function): library(car) library(xplain) xplain(call="lm(education ~ young + income + urban, data=Anscombe)", xml="http://www.zuckarelli.de/xplain/example_lm_foreach.xml") ## ## Call: ## lm(formula = education […]

Read More

Categories

January 2018
MTWTFSS
« Dec Feb »
1234567
891011121314
15161718192021
22232425262728
293031