Some codes of practice (i.e. BS5400, Eurocode 2) present some equations describing stress strain relation relation for either steel or concrete. One can also obtain them from experimental or any other discreet data by using "genfit" or "pwfit" functions. Check Help for these...
It may sound quite easy, but my question is the following : What kind of function or a operator should I use to define a countor that is independent from the order in which the defining points are arranged. i.e. I want to define a section contour by using discreet points. I ususlly use linterp...