Zedgraph doesn't have organized development/support right now and hasn't for some time. It is still has good feature content, particularly when you consider that the baseline is ~11 years old. I don't know that the SourceForge documentation links ever worked as that was the project that was being fleshed out at the time support was dropped. There was a web library independent of SourceForge that had the examples for awhile. You may be able to find that in a web archive. I have a couple times over...
There is a radar plot scheme available. However, I've not used it and it doesn't seem to be in what's left of the online documentaion. I did find this reference to it. Unless someone answers your question here or you can unearth something in the depths of google, you may need to go in another direction. https://sourceforge.net/p/zedgraph/discussion/392231/thread/d74e10c5/
Not meaning to slap your wrists here but usually there's a line on boards such as this that runs between "How do I do SomeActivity?" and "How do I write my app?" People can help with the first because the question is limited in scope and specific. The second one is impossible for a number of reasons. I'm afraid your new question as its framed falls into the latter category. I'm afraid your latest question crosses into the second category. I'll give you a couple directions to look in. However, I researched...
Okay, I finally read this and you had me at "fetal monitor." I don't see a .Refresh() or a .AxisChange() in your "refresh..." These (particularly Refresh) would me more typical for realtime apps.
Ironically, I hunted around a few years ago for the people that hold the manager...
Here's a link to an archive of the original examples. I checked it and it works down...
I'd presume yes as core Zed supports zooming but I haven't tried it with web based...
Check out the examples at: http://zedgraph.sourceforge.net/samples.html The 3rd or...