I decided it was time to experiment with Tableau again, and what better way to practice than using data from my local public library system, Montgomery County Public Libraries? Locating MCPL data was almost as fun as using Tableau, since I was able to learn about and experiment with another data sharing and visualization tool called Socrata.
Socrata is a cloud-based platform that government organizations can use to host and share public data sets. Montgomery County uses Socrata to power dataMontgomery, where I found a data set called Gov Stat MCPL Spreadsheet, listing Montgomery County Public Library performance measures. The Socrata platform offers tools for filtering, sorting, visualizing, and exporting data sets, so I was able to filter and visualize the data in charts (like actual and projected numbers of “attendance of library programs” by fiscal year, displayed in a line graph).
I was also able to export the full data set to a CSV file in Socrata, which I then saved to Excel and uploaded to Tableau to practice creating a dashboard. In my first Tableau viz I used the Story format (basically, a slide show of graphs and charts). For my second viz, I decided to try the Dashboard format, where I can organize multiple charts on a single screen. I created four charts but was only able to fit two of the charts comfortably on the dashboard screen (“Actual and Projected Attendance” and “Use of Library Services and Website”). Here’s the completed viz, Service Usage and Attendance at Montgomery County Public Libraries (MCPL).
I love experimenting with Tableau, but the best part of this exercise was learning about the data sharing and visualization capabilities of Socrata. A quick Google search for “Socrata government data” shows that many local and state governments use Socrata to share data sets with the public (for example, Baltimore and Hawaii). Federal government institutions also use Socrata to share data sets, like the open data catalog for the Institute of Museum and Library Services or NASA’s open data portal. It’s a promising sign that both local and federal governments are making it a priority to openly share data with researchers and the general public, so anyone can use the data in new and creative ways.