exp函数参数与c1类型不匹配吧

C1是要求数值型的吗？我的应该就是数值型的啊

你可以把exp函数和c1贴出来吗？

it means that you input c1 must be a numeric number or a vector of numeric type of data. Sometime, your vector is c("1","2","3"), it is NOT a numeric vector, and it looks like it, you could check your vector using is.numeric(c1) to check before applying, exp() function. otherwise, you could  paste your c2 here and someone could have a look.