小编jpm*_*m92的帖子

考虑以下数据框：

dummy_df <- tibble(\n  A=c("ABC", "ABC", "BCD", "CDF", "CDF", "CDF"),\n  B=c(0.25, 0.25, 1.23, 0.58, 0.58, 0.58),\n  C=c("lorem", "ipsum", "dolor", "amet", "something", "else"),\n  D=c("up", "up", "down", "down", "down", "down"),\n  E=c(132, 132, 243, 512, 512, 512),\n  F=c("m1", "m1", "m5", "m3", "m3", "m3"),\n  G=c("val", "val", "mur", "mad", "mad", "mad"),\n  H=c("grx", "grx", "bcn", "sal", "sal", "sal"),\n  I=c(1.68, 1.68, 2.31, 3.12, 3.12, 3.12),\n  J=c("p", "p", "f", "p", "p", "p"),\n  K=c(100, 100, 200, 143, 143, 143)\n)\n\n# A tibble: 6 \xc3\x97 11\n  A         B C         D …