Fitbit & Google Calendar Chart

I was playing around with some Google Charts yesterday and I stumbled across their Calendar charts. I thought it would be cool to display changes in Fitbit activity by displaying step differentials using this visualization. 

The legend is as follows:

• Blue: Will's Steps > Belen's Steps
• Orange: Belen's Steps > Will's Steps 
• The deeper the color, the greater the difference. Similarly, the lighter the color, the smaller the difference. 
• Rows denote days of the week. From top to bottom: Sunday - Saturday.
• The outlined blocks represent months, and the columns represent days in those months.
• Greyed out cells represent missing data. 

The chart above shows 145 days of data with varying levels of competition. Unfortunately for me, there are mostly blue cells. Will's a runner, so unfair advantage, right? With the exception of September, I beat Will's step count for a total of 7-8 days out of the month. In September I beat his step count for a total of 14 days. Still, that was only 46% of the days in July. Go Will! He takes the lead 75% of the time.

​You can see the cell colors becoming lighter from July to November. In other words, the step counts were converging, meaning 1 of 2 things: 1) We got more competitive, or 2) we both got less competitive as time went on. See for yourself below: 

Looks like a slight downward trend from August to November.

These cool charts were made in Stata and use Google Charts API :)