In this blog we will learn how to visualize tweets on Google Maps using R!
Twitter App required to get started with this. If you don’t have Twitter Application, go to Twitter Developer link and sign in with your credentials, after that go to twitter Apps & click on “Create New App”button for creating new application.
Once you’ve done this, make a note of your Keys & Access Token.
Consumer Key (API Key)
Consumer Secret (API Secret)
Access Token Secret
R Packages required:
install.packages(“ggmap”): It allows us to access maps from the Google Maps API.
ggmap package has a function get_mapthat can download maps from Google Maps API.
install.packages(“twitteR“): It provides an interface to the Twitter web API.
twitteR package has searchTwitterfunction that can search tweets based on a supplied search string.
Extraction of India map using get_map using below coordinates. Coordinates extracted using this Blog .
I have selected the maptype = “terrain“, other maptype eg. satellite & roadmap.
Here is the output of ggmap(india_map).
Twitter OAuth Setup:
Extracting 500 tweets having tag @narendramodi within a 1000 km radius of the given latitude/longitude.
20.593684° N, 78.96288° E is of India Location: Extracted using this Blog.
Here is the output of View(my_tweets_df). 500 Observation & 16 Variable.
Excluding rows from data frame where longitude/latitude=NA & taking only last two columns (unique data).
Here is the final output of View(my_tweets_df). 206 Observation & 2 Variable.
Mapping of Tweets & Google Map:
Converting both columns of my_tweets_df as numeric.
Mapping Map with my_tweets_df .
Here is the output of plot.
Seems like more tweets (having tag @narendramodi) are coming from Mumbai & Delhi.