我一直在使用lpSolve和lpSolveAPI.我构建我的约束矩阵,目标函数等,并提供给lp函数,这很好用.我想使用write.lp将问题保存为lp文件,但我遇到了麻烦.我不断收到错误,告诉我该对象不是lp对象.有任何想法吗？
> x1 = lp(direction = "min", cost, A , ">=",r,,3:13, , , ,FALSE)
> class(x1)
[1] "lp"
>write.lp(x1, filename, type = "lp",use.names = c(TRUE, TRUE))
Error in write.lp(x1, filename, type = "lp", use.names = c(TRUE, TRUE)) :
the lp argument does not appear to be a valid linear program record