Description Usage Arguments Value See Also Examples
Time-Based Rolling Sum
1 |
.tbl |
a data frame with at least two variables; time column formatted as date, date/time and value column. |
x |
column containing the values to calculate the sum. |
tcolumn |
formatted time column. |
unit |
character, one of "years", "months", "weeks", "days", "hours", "minutes", "seconds" |
n |
numeric, describing the length of the time window. |
na.rm |
logical. Should missing values be removed? |
dataframe with column for the rolling sum.
1 2 | tbr_sum(Dissolved_Oxygen, x = Average_DO, tcolumn = Date, unit = "years", n =
5)
|
# A tibble: 236 x 7
Station_ID Date Param_Code Param_Desc Average_DO Min_DO sum
<int> <date> <chr> <chr> <dbl> <dbl> <dbl>
1 12515 2000-01-03 00300 OXYGEN, DISSOLVED (~ 6.19 6.19 6.19
2 12515 2000-03-14 00300 OXYGEN, DISSOLVED (~ 6.7 6.7 20.2
3 12517 2000-03-14 00300 OXYGEN, DISSOLVED (~ 7.3 7.3 20.2
4 12515 2000-03-16 00300 OXYGEN, DISSOLVED (~ 6.41 6.41 26.6
5 12515 2000-05-03 00300 OXYGEN, DISSOLVED (~ 4.42 4.42 31.0
6 12517 2000-06-14 00300 OXYGEN, DISSOLVED (~ 5.74 5.74 36.8
7 12515 2000-06-15 00300 OXYGEN, DISSOLVED (~ 4.86 4.86 41.6
8 12515 2000-07-11 00300 OXYGEN, DISSOLVED (~ 4.48 4.48 46.1
9 12515 2000-09-12 00300 OXYGEN, DISSOLVED (~ 5.64 5.64 51.7
10 12517 2000-10-17 00300 OXYGEN, DISSOLVED (~ 7.96 7.96 59.7
# ... with 226 more rows
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