@pout said:
Why don't you just send the data through JSON to a htmlpage and use that combined with existing chart creator?
Like this one: http://www.anychart.com/products/anychart/overview/Should be pretty simple.
Are you in the correct topic, Pout?
AnyChart does not produce diagrams, it produces charts.
And yes it's a minimum of 500 dollars "simple".
Jim had some success using GraphViz, which actually has two examples of state diagrams:
finite state machine* LR(0) state graph