The visualisation is similar to what I did for the IRIS competition earlier but the difference is in the backend. Instead of reading a preset datafile and displaying it, this map here has a MySQL database in backend and queries it through PHP and visualises the result. It also has PHP based POST mechanism to send data to the database from the user. The best part is that none of the data in the image above is collected or entered by me (except for my two data points). It is rather generated by the people who individually entered their own locations.