【发布时间】:2021-03-05 15:28:07
【问题描述】:
我正在尝试填写缺失的日期和费率。对于缺少的日期,我希望在 2019 年(1 月)和 2021 年(1 月)之间补充 yr_month。对于费率,我希望将任何缺失值重新填充为零。
我找到的最接近的例子在这里 - How to add only missing Dates in Dataframe 但我的挑战是我还有一个按组排列的列。这意味着每位患者将拥有 2 年的数据。
我能以有效的方式做到这一点的最佳方式是什么?
# A tibble: 10 x 3
# Groups: clinic, yr_month [10]
clinic yr_month rate
<chr> <chr> <dbl>
1 patient1 2019-01 0.528
2 patient1 2019-04 0.528
3 patient1 2020-05 0.528
4 patient1 2021-01 1.06
5 patient2 2019-01 0.0671
6 patient2 2019-02 0.436
7 patient2 2019-03 0.805
8 patient2 2019-04 0.671
9 patient2 2019-05 0.268
10 patient2 2019-06 0.101
输入
structure(list(clinic = c("patient1", "patient1", "patient1",
"patient1", "patient2", "patient2", "patient2", "patient2", "patient2",
"patient2"), yr_month = c("2019-01", "2019-04", "2020-05", "2021-01",
"2019-01", "2019-02", "2019-03", "2019-04", "2019-05", "2019-06"
), rate = c(0.527704485488127, 0.527704485488127, 0.527704485488127,
1.05540897097625, 0.0671163461861136, 0.436256250209739, 0.805396154233364,
0.671163461861136, 0.268465384744455, 0.10067451927917)), row.names = c(NA,
-10L), groups = structure(list(clinic = c("patient1", "patient1",
"patient1", "patient1", "patient2", "patient2", "patient2", "patient2",
"patient2", "patient2"), yr_month = c("2019-01", "2019-04", "2020-05",
"2021-01", "2019-01", "2019-02", "2019-03", "2019-04", "2019-05",
"2019-06"), .rows = structure(list(1L, 2L, 3L, 4L, 5L, 6L, 7L,
8L, 9L, 10L), ptype = integer(0), class = c("vctrs_list_of",
"vctrs_vctr", "list"))), row.names = c(NA, 10L), class = c("tbl_df",
"tbl", "data.frame"), .drop = TRUE), class = c("grouped_df",
"tbl_df", "tbl", "data.frame"))
预期输出:
# Groups: clinic, yr_month
clinic yr_month rate
<chr> <chr> <dbl>
1 patient1 2019-01 0
1 patient1 2019-02 0
1 patient1 2019-03 0
1 patient1 2019-04 0.528
1 patient1 2019-05 0
1 patient1 2019-06 0
1 patient1 2019-07 0
1 patient1 2019-08 0
1 patient1 2019-09 0
...
25 patient2 2019-01 0.0671
26 patient2 2019-02 0.436
27 patient2 2019-03 0.805
28 patient2 2019-04 0.671
29 patient2 2019-05 0.268
30 patient2 2019-06 0.101
...
48 patient2 2021-01 0
【问题讨论】: