Step 10: Google Charts and Website Integration
There are a few features of the chart that I'd like to point out. First, it automatically updates every 10 seconds. It will continue to add more points for an hour. After an hour, data older than an hour will be scrolled off the chart to make room for new data. This limitation is because of the way Google Charts works. A Google Chart is created through the use of a URL. Since a URL is limited to 2048 characters, there is a limit on the amount of data that can be plotted at once. The other thing I want to mention about the chart is that it will automatically scale the Y-axis.
Happy power monitoring!