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新手刚学R语言,请问这个问题怎么解决

Open Ethan20000131 opened this issue 5 years ago • 0 comments

y<-load_nCov2019()

ggplot(summary(y), aes(as.Date(date, "%m.%d"), as.numeric(confirm))) +

  • geom_col(fill='firebrick') + theme_minimal(base_size = 14) +
  • xlab(NULL) + ylab(NULL) +
  • labs(caption = paste("accessed date:", time(y))) Error in as.Date.default(date, "%m.%d") : 不知如何将'date'转换成“Date”类别

新手刚学R语言,请问这个问题怎么解决

Ethan20000131 avatar Feb 26 '20 11:02 Ethan20000131