Here are some links to past fora discussions that describe ways to approximate derivatives given discrete numerical data.
1 2 3
Curvature approximations could be done as modest variants of these methods.
Thank you very much, I will have a look at those!
Thank you very much for taking the time to reply, I will give this a go and see how it works!
Definitely a nice solution using the MeshFunctions -> {"ArcLength"} option! I had no idea about that one! Thanks for sharing Vitaliy!
Thank you so much for your detailed reply, I will have a go at that and see how it works, but it definitely looks like what I am going to need!
Evenly spaced as in angle from the center? or in distance along the perimeter?
Evenly spaced as in distance along the perimeter, apologies for not clarifying that earlier!