这个我看过，不过还是不对。程序显示是这样的：
R <- qua.regressCOP(F=0.90,cop=PLACKETTcop, para=10)
>  R <- qua.regressCOP(F=0.90,cop=gumbelcop, para=0.5)
Error in derCOP(cop = cop, u = u, v = x, delu = delu, para = para, ...) :
  找不到对象'gumbelcop'
Error in derCOP(cop = cop, u = u, v = x, delu = delu, para = para, ...) :
  找不到对象'gumbelcop'
此外: 警告信息：
1: In qua.regressCOP(F = 0.9, cop = gumbelcop, para = 0.5) :
  could not uniroot in derCOPinv, skipping sample for i=1 having U=0.01
2: In qua.regressCOP(F = 0.9, cop = gumbelcop, para = 0.5) : 0.5
3: In derCOP(cop = cop, u = u, v = x, delu = delu, para = para, ...) :
  重新评估被中断的许诺
Error in derCOP(cop = cop, u = u, v = x, delu = delu, para = para, ...) :
  找不到对象'gumbelcop'
此外: 警告信息：
1: In qua.regressCOP(F = 0.9, cop = gumbelcop, para = 0.5) :
  could not uniroot in derCOPinv, skipping sample for i=2 having U=0.02
2: In qua.regressCOP(F = 0.9, cop = gumbelcop, para = 0.5) : 0.5
3: In derCOP(cop = cop, u = u, v = x, delu = delu, para = para, ...) :
  重新评估被中断的许诺
Error in derCOP(cop = cop, u = u, v = x, delu = delu, para = para, ...) :
  找不到对象'gumbelcop'
此外: 警告信息：


要怎么解决呢？

请问您的问题有解决的方法吗，我也遇到同样的问题，想要用其他copula函数

所以楼主你会了么~~  求指教啊~~