自然三次样条

编程：x=[01234];y=[13342];s=csapi(x,y)s=form:'pp'breaks:[01234]coefs:[4x4double]pieces:4order:4dim:1s.coefsans=0.7917-3.37504.58331.00000.7917-1.00000.20833.0000-0.95831.37500.58333.0000-0.9583-1.50000.45834.0000plot(x,y,'-g');holdon;fnplt(s)plot(x,y,'-g');holdon;fnplt(s)以下是截图: