I'm searching for a way to display live data in a graph using google glass. According to "supported google APIs" there are no APIs currently supporting this feature.
I have also taken a look at the android graphview API but without any luck.
Are there any known APIs that work or is an JavaScript implementation a possible way to implement this feature?
There is currently not built-in Widget to display graphs on Android. Luckily enough, there is a thing called LiveCard on Google Glass to display realtime information. You can then, with a little work draw the realtime graph on your own and render it to the LiveCard's remoteview. If you need an example, here is an open source app that displays the temperature in realtime.