我正试图弄清楚如何更改tidyr的 pivot_wider()
函数在生成宽数据集中新变量名称的方式。具体来说,我希望“names_from”变量被添加到新变量的前缀而不是后缀。
我的数据集如下:
list(ID = c("A950", "A950", "A950", "A970", "A970", "A970", "A996", "A996", "A996"),
Phase = c("P1", "P2", "P3", "P1", "P2", "P3", "P1", "P2", "P3"),
A = c(23.5, 25.2, 21.9, 21.9, 21.1, 20.3, 19.5, 18.7, 17.9),
B = c(21.9, 21.1, 20.3, 19.5, 18.7, 17.9, 17.1, 16.3, 15.5),
C = c(25.2, 21.9, 20.3, 17.6, 15.1, 12.7, 10.3, 7.8, 5.4),
D = c("M", "M", "M", "F", "F", "F", "N", "N", "N"))
使用pivot_wider()
函数,以 Phase 作为“键”,把数据集展开后,我的结果如下:
ex_wide <- ex_long %>%
pivot_wider(names_from = Phase, values_from = c(3:6))
list(ID = c("A950", "A970", "A996"),
A_P1 = c(23.5, 21.9, 19.5),
A_P2 = c(25.2, 21.1, 18.7),
A_P3 = c(21.9, 20.3, 17.9),
B_P1 = c(21.9, 19.5, 17.1),
B_P2 = c(21.1, 18.7, 16.3),
B_P3 = c(20.3, 17.9, 15.5),
C_P1 = c(25.2, 17.6, 10.3),
C_P2 = c(21.9, 15.1, 7.8),
C_P3 = c(20.3, 12.7, 5.4),
D_P1 = c("M", "F", "N"),
D_P2 = c("M", "F", "N"),
D_P3 = c("M", "F", "N"))
我希望列名看起来像 P1_A 而不是 A_P1(即,phase_variable 而不是 variable_phase)。这似乎很容易解决;然而,我并没有找到符合我的需求的任何解决方案。非常感谢您的帮助。提前致谢。