@dillon,
Please take a look at the following examples to create a chart from database using:
- PHP
- ASP.NET MVC
- JSP
- Spring MVC
To auto-refresh the chart every 3 seconds, you can use setInterval() method to call an AJAX request whose response can be parsed to update the chart dataPoints accordingly. Please take a look at this documentation page for updating chart dynamically using an AJAX request.
In case the above resource doesn’t help, can you kindly let us know the Server Side technology you are using so that we can help you out with an appropriate solution?
—–
Manoj Mohan
Team CanvasJS