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continue with calculations for lagged means and anomalies
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#' .. content for \description{} (no empty lines) .. | ||
#' | ||
#' .. content for \details{} .. | ||
#' | ||
#' @title | ||
#' @param start_year | ||
#' @param end_year | ||
#' @param n_per_month | ||
#' @return | ||
#' @author Emma Mendelsohn | ||
#' @export | ||
set_model_dates <- function(start_year, end_year, n_per_month, lag_intervals, seed = 1) { | ||
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set.seed(seed) | ||
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# Create a vector of dates from January 2005 to December 2022 | ||
dates <- seq(as.Date(paste0(start_year,"-01-01")), as.Date(paste0(end_year, "-12-31")), by = "day") | ||
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model_dates <-tibble(date = dates) |> | ||
mutate(year = format(dates, "%Y"), | ||
month = format(dates, "%m"), | ||
day = format(dates, "%d"), | ||
day_of_year = format(dates, "%j")) |> | ||
mutate(across(c(year, month, day, day_of_year), as.integer)) |> | ||
mutate(year_day_of_year = paste(year, day_of_year, sep = "_")) |> | ||
group_by(month, year) |> | ||
mutate(select_date = row_number() %in% sample(n(), n_per_month)) |> | ||
ungroup() |> | ||
arrange(year, month, day) | ||
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# make sure we always have enough days to calculate lags | ||
model_dates$select_date[1:max(lag_intervals)] <- FALSE | ||
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return(model_dates) | ||
} |
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