ff_calc_inv_mass_ts.RdA wrapper for ff_calc_inv_mass that runs the calculation for a series of elapsed days from 1 to ndays. Returns a data frame with total invertebrate mass (kg) by field unique_id and day.
ff_calc_inv_mass_ts(df, ndays)An sf dataset, such as the provided dataframe ff_fields, which includes an attribute area_ac containing the field area in acres. Also works with an ordinary data.frame or tibble.
The total number of days over which to conduct the mass calculation. A sequence of days from 1 to ndays is fed into the day parameter of the ff_calc_inv_mass function.
# calculate the invertebrate mass time series
ff_fields |> ff_calc_inv_mass_ts(14)
#> # A tibble: 134,792 × 3
#> day unique_id total_prod_kg
#> <int> <chr> <dbl>
#> 1 1 1103539 17.6
#> 2 1 1102849 17.7
#> 3 1 1103353 0.794
#> 4 1 1103425 1.01
#> 5 1 1103546 36.8
#> 6 1 1103560 11.3
#> 7 1 1103561 26.1
#> 8 1 1103563 18.7
#> 9 1 1103564 56.2
#> 10 1 1103566 42.2
#> # ℹ 134,782 more rows
# calculate the invertebrate mass time series for a particular field
ff_fields |> dplyr::filter(unique_id=="1103539") |> ff_calc_inv_mass_ts(14)
#> # A tibble: 14 × 3
#> day unique_id total_prod_kg
#> <int> <chr> <dbl>
#> 1 1 1103539 17.6
#> 2 2 1103539 35.3
#> 3 3 1103539 52.9
#> 4 4 1103539 70.5
#> 5 5 1103539 88.2
#> 6 6 1103539 106.
#> 7 7 1103539 123.
#> 8 8 1103539 141.
#> 9 9 1103539 159.
#> 10 10 1103539 176.
#> 11 11 1103539 194.
#> 12 12 1103539 212.
#> 13 13 1103539 229.
#> 14 14 1103539 247.