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我有一个数据框,我想根据 schoolid 变量的唯一值对其进行子集化。然后将这些评分到列表中,因此列表中的每个成员都是数据框的一个子集。我显然知道如何针对 schoolid 的特定值执行此操作,一次一个,但我如何在不知道哪些值可能出现在 schoolid 中的情况下系统地执行此操作?
感谢您的帮助!杰夫
structure(list(schoolid = c(84351L, 84351L, 84351L, 84351L, 84351L,
84351L, 84351L, 84351L, 84351L, 84351L, 84351L, 84351L, 84351L,
84351L, 84351L, 84384L, 84384L, 84384L, 84384L, 84384L, 84384L,
84384L, 84384L, 84384L, 84384L, 84384L, 84384L, 84384L, 84384L,
84384L, 84385L, 84385L, 84385L, 84385L, 84385L, 84385L, 84385L,
84385L, 84385L, 84385L, 84385L, 84385L, 84385L, 84385L, 84385L,
84386L, 84386L, 84386L, 84386L, 84386L, 84386L, 84386L, 84386L,
84386L, 84386L, 84386L, 84386L, 84386L, 84386L, 84386L, 84387L,
84387L, 84387L, 84387L, 84387L, 84387L, 84387L, 84387L, 84387L,
84388L, 84388L, 84388L, 84388L, 84388L, 84388L, 84388L, 84388L,
84388L, 84389L, 84389L, 84389L, 84389L, 84389L, 84389L, 84389L,
84389L, 84389L, 84395L, 84395L, 84395L, 84395L, 84395L, 84395L,
84397L, 84397L, 84397L, 84397L, 84397L, 84397L, 84398L, 84398L,
84398L, 84398L, 84398L, 84398L, 84351L, 84351L, 84351L, 84351L,
84351L, 84351L, 84351L, 84351L, 84351L, 84351L, 84351L, 84351L,
84384L, 84384L, 84384L, 84384L, 84384L, 84384L, 84384L, 84384L,
84384L, 84384L, 84384L, 84385L, 84385L, 84385L, 84385L, 84385L,
84385L, 84385L, 84385L, 84385L, 84385L, 84385L, 84385L, 84385L,
84386L, 84386L, 84386L, 84386L, 84386L, 84386L, 84386L, 84386L,
84386L, 84386L, 84386L, 84386L, 84387L, 84387L, 84387L, 84387L,
84387L, 84387L, 84387L, 84387L, 84388L, 84388L, 84388L, 84388L,
84388L, 84388L, 84389L, 84389L, 84389L, 84389L, 84389L, 84389L,
84389L, 84389L, 84389L, 84397L, 84397L, 84398L, 84398L, 84398L,
84398L, 84398L, 84351L, 84351L, 84351L, 84351L, 84351L, 84351L,
84351L, 84351L, 84351L, 84351L, 84351L, 84351L, 84351L, 84351L,
84384L, 84384L, 84384L, 84384L, 84384L, 84384L, 84384L, 84384L,
84384L, 84384L, 84384L, 84384L, 84384L, 84385L, 84385L, 84385L,
84385L, 84385L, 84385L, 84385L, 84385L, 84385L, 84385L, 84385L,
84385L, 84385L, 84385L, 84385L, 84386L, 84386L, 84386L, 84386L,
84386L, 84386L, 84386L, 84386L, 84386L, 84386L, 84386L, 84386L,
84386L, 84386L, 84387L, 84387L, 84387L, 84387L, 84387L, 84387L,
84387L, 84387L, 84388L, 84388L, 84388L, 84388L, 84388L, 84388L,
84388L, 84388L, 84388L, 84389L, 84389L, 84389L, 84389L, 84389L,
84389L, 84389L, 84395L, 84395L, 84395L, 84395L, 84397L, 84397L,
84397L, 84397L, 84397L, 84397L, 84398L, 84398L, 84398L, 84398L,
84398L, 84398L), subgroup = c("All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "All", "All", "All", "All", "All", "All", "All", "All",
"All", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL",
"ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL",
"ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL",
"ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL",
"ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL",
"ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL",
"ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL",
"ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL",
"ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "ELL", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd",
"SpEd", "SpEd", "SpEd", "SpEd", "SpEd", "SpEd"), grade = c(0L,
0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L, 4L, 4L, 4L, 0L, 0L,
0L, 1L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L, 4L, 4L, 4L, 0L, 0L, 0L,
1L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L, 4L, 4L, 4L, 0L, 0L, 0L, 1L,
1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L, 4L, 4L, 4L, 0L, 0L, 0L, 1L, 1L,
1L, 2L, 2L, 2L, 0L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L, 0L, 0L, 0L,
1L, 1L, 1L, 2L, 2L, 2L, 5L, 5L, 5L, 6L, 6L, 6L, 0L, 0L, 0L, 1L,
1L, 1L, 0L, 0L, 0L, 1L, 1L, 1L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L,
3L, 3L, 4L, 4L, 0L, 0L, 0L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 4L, 0L,
0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 4L, 4L, 0L, 0L, 0L, 1L,
1L, 1L, 2L, 2L, 2L, 3L, 3L, 4L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L,
0L, 1L, 1L, 1L, 2L, 2L, 0L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L, 0L,
0L, 0L, 0L, 0L, 1L, 1L, 0L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L, 3L,
3L, 4L, 4L, 4L, 0L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 3L, 3L, 3L, 4L,
4L, 0L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L, 4L, 4L, 4L,
0L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L, 4L, 4L, 0L, 0L,
1L, 1L, 1L, 2L, 2L, 2L, 0L, 0L, 0L, 1L, 1L, 1L, 2L, 2L, 2L, 0L,
1L, 1L, 1L, 2L, 2L, 2L, 5L, 5L, 6L, 6L, 0L, 0L, 0L, 1L, 1L, 1L,
0L, 0L, 0L, 1L, 1L, 1L), FnPLevel = structure(c(1L, 2L, 3L, 1L,
2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L,
3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L,
1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L,
2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L,
3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L,
1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L,
2L, 3L, 1L, 2L, 3L, 1L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 3L, 1L,
2L, 1L, 2L, 3L, 1L, 3L, 1L, 2L, 3L, 2L, 3L, 1L, 1L, 2L, 3L, 1L,
2L, 3L, 1L, 2L, 3L, 1L, 3L, 1L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L,
2L, 3L, 1L, 3L, 1L, 1L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 3L, 1L, 2L,
3L, 1L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 3L, 1L, 2L,
3L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 3L, 1L, 2L,
3L, 1L, 2L, 3L, 1L, 2L, 3L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 1L, 2L,
3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L,
1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 2L, 3L, 1L, 2L, 1L, 2L, 3L,
1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 3L, 1L, 2L, 3L,
1L, 2L, 3L, 1L, 2L, 1L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L,
1L, 2L, 3L), .Label = c("AGL", "BGL", "OGL"), class = "factor"),
num = c(54L, 9L, 32L, 58L, 15L, 45L, 76L, 22L, 81L, 83L,
1L, 49L, 71L, 22L, 19L, 51L, 34L, 37L, 86L, 10L, 44L, 41L,
24L, 79L, 55L, 20L, 60L, 52L, 11L, 7L, 59L, 21L, 13L, 89L,
34L, 23L, 68L, 21L, 66L, 70L, 12L, 50L, 51L, 6L, 8L, 51L,
5L, 27L, 45L, 23L, 13L, 31L, 12L, 44L, 31L, 7L, 47L, 31L,
17L, 8L, 36L, 9L, 13L, 36L, 17L, 23L, 45L, 16L, 42L, 32L,
7L, 17L, 49L, 16L, 19L, 54L, 5L, 44L, 18L, 10L, 24L, 49L,
17L, 19L, 73L, 7L, 28L, 42L, 5L, 2L, 32L, 1L, 7L, 41L, 14L,
20L, 34L, 22L, 29L, 64L, 17L, 25L, 26L, 11L, 18L, 6L, 4L,
4L, 2L, 2L, 2L, 1L, 4L, 1L, 4L, 2L, 4L, 1L, 6L, 4L, 5L, 7L,
1L, 2L, 8L, 2L, 2L, 1L, 7L, 5L, 2L, 5L, 1L, 3L, 2L, 4L, 5L,
2L, 4L, 1L, 1L, 3L, 2L, 2L, 3L, 4L, 3L, 1L, 1L, 7L, 1L, 3L,
1L, 3L, 2L, 2L, 3L, 6L, 3L, 2L, 3L, 1L, 1L, 2L, 1L, 1L, 2L,
1L, 4L, 7L, 3L, 6L, 4L, 1L, 2L, 3L, 1L, 3L, 2L, 6L, 3L, 2L,
2L, 7L, 2L, 2L, 11L, 7L, 6L, 6L, 7L, 20L, 13L, 10L, 9L, 11L,
4L, 2L, 4L, 3L, 5L, 2L, 7L, 6L, 12L, 3L, 11L, 10L, 3L, 3L,
7L, 5L, 2L, 7L, 12L, 3L, 13L, 6L, 12L, 6L, 5L, 7L, 1L, 1L,
2L, 4L, 1L, 2L, 8L, 11L, 3L, 5L, 5L, 9L, 2L, 2L, 10L, 2L,
2L, 1L, 3L, 5L, 6L, 2L, 1L, 7L, 11L, 2L, 3L, 2L, 4L, 8L,
3L, 2L, 2L, 8L, 1L, 6L, 7L, 4L, 3L, 2L, 2L, 3L, 2L, 2L, 1L,
5L, 3L, 4L, 2L, 7L, 5L, 7L, 7L, 4L, 1L, 5L, 1L)), .Names = c("schoolid",
"subgroup", "grade", "FnPLevel", "num"), row.names = c(NA, 279L
), class = "data.frame")
最佳答案
只需使用拆分
:
schoolid_groups <- split(Data, Data$schoolid)
关于r - 将数据框子集放入列表中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9671427/
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