data.frame中的错误（smoothness_mean = rep（seq（from = 0.05，to = 0.15）），：参数暗示行数不同：1，0

Question

  

data.frame中的错误（smoothness_mean = rep（seq（from = 0.05，to = 0.15）），：     参数暗示不同的行数：1、0

以上评论意味着什么？

cancer1 <-data.frame(smoothness_mean = rep(seq(from = 0.05, 
                                               to = 0.15),
                                       length.out=100,4),
                 radius_mean = mean(cancer$radius_mean),
                 texture_mean = mean(cancer$texture_mean),
                 concave.points_mean = rep(c(0.02,0.04,0.06,0.08),0.10))