Real time chart with data from a serial port

[az1987]

I was just wondering, Is there a way I could display data from a serial port on a chart in real time, if not by just refreshing the web page?
Basically I have a radio receiver hooked up to my computer by a serial port. I need to get the data so i can plot a chart that will show the frequency strength of the given frequency. 

[asgallant]

Theoretically yes, but that has nothing to do with the Visualization API (or even much to do with javascript, beyond fetching live data from the server).  You will need to implement the data capture on your server and create a feed that javascript can fetch it from.