Daniel Molnar
06-17-2015
This application is trying to show linear regression in some metropolises' Foursquare data.
Foursquare data is a goldmine for analysis, hereby I try to figure out what's the relation between number of checkins and tips people leave.
The live application is available here:
The application calls the Explore Recommended and Popular Venues API endpoint of Foursquare and extracts the data points for the 30 most interesting venues.

I use the plotrix library to be able to analyse and understand possible linear models.
library(plotrix)
y <- runif(10)
err <- runif(10)
plotCI(1:10, y, err, main = "Basic plotCI")
Exploring all possible quantified attributes could easily lead to a simple model to better understand Foursquare recommendations.