
Helper function for s_count_occurrences_by_grade()
      Source: R/count_occurrences_by_grade.R
      h_append_grade_groups.RdHelper function for s_count_occurrences_by_grade() to insert grade groupings into list with
individual grade frequencies. The order of the final result follows the order of grade_groups.
The elements under any-grade group (if any), i.e. the grade group equal to refs will be moved to
the end. Grade groups names must be unique.
Arguments
- grade_groups
 (named
listofcharacter)
containing groupings of grades.- refs
 (named
listofnumeric)
where each name corresponds to a reference grade level and each entry represents a count.- remove_single
 (
logical)TRUEto not include the elements of one-element grade groups in the the output list; in this case only the grade groups names will be included in the output.
Examples
h_append_grade_groups(
  list(
    "Any Grade" = as.character(1:5),
    "Grade 1-2" = c("1", "2"),
    "Grade 3-4" = c("3", "4")
  ),
  list("1" = 10, "2" = 20, "3" = 30, "4" = 40, "5" = 50)
)
#> $`Any Grade`
#> [1] 150
#> 
#> $`Grade 1-2`
#> [1] 30
#> 
#> $`1`
#> [1] 10
#> 
#> $`2`
#> [1] 20
#> 
#> $`Grade 3-4`
#> [1] 70
#> 
#> $`3`
#> [1] 30
#> 
#> $`4`
#> [1] 40
#> 
#> $`5`
#> [1] 50
#> 
h_append_grade_groups(
  list(
    "Any Grade" = as.character(5:1),
    "Grade A" = "5",
    "Grade B" = c("4", "3")
  ),
  list("1" = 10, "2" = 20, "3" = 30, "4" = 40, "5" = 50)
)
#> $`Any Grade`
#> [1] 150
#> 
#> $`Grade A`
#> [1] 50
#> 
#> $`Grade B`
#> [1] 70
#> 
#> $`4`
#> [1] 40
#> 
#> $`3`
#> [1] 30
#> 
#> $`2`
#> [1] 20
#> 
#> $`1`
#> [1] 10
#> 
h_append_grade_groups(
  list(
    "Any Grade" = as.character(1:5),
    "Grade 1-2" = c("1", "2"),
    "Grade 3-4" = c("3", "4")
  ),
  list("1" = 10, "2" = 5, "3" = 0)
)
#> $`Any Grade`
#> [1] 15
#> 
#> $`Grade 1-2`
#> [1] 15
#> 
#> $`1`
#> [1] 10
#> 
#> $`2`
#> [1] 5
#> 
#> $`Grade 3-4`
#> [1] 0
#> 
#> $`3`
#> [1] 0
#>