How can I plot event points on an analog signal graph?

[kgolden]

Hi,

I'm developing a state machine of sorts which changes states according to the change in input analog voltage over time. I am tracking the voltage over a voltage time graph and would like to also be able to mark the points on this graph where events took place and perhaps even label them.

I cannot think of a way to do this. Can anyone point me in the right direction? Is there a type of graph indicator I can use for this task? 

[robweaver]

You can use annotations on graphs, however, there are no annotations on charts. To annotate a graph programmatically, add annotations to the annotation list (array of annotation clusters) property of the graph (right click on graph and select Create > Property Node > Annotation List).