Generate trend based based on multiple draws of annual indices
Arguments
- proj_data
tibble of estimated indices drawn from fit_* function. Columns are draw, year, and proj_y
- start_yr
numeric value of the first year in which trend will be calculated. Default is first available year within the dataset
- end_yr
numeric vlaue representing the last year in which trend will be calculated. Default is first available year within the dataset
- method
character of method used to calculate trend. Two methods available; geometric mean ("gmean" as default )or "lm" linear regression
Examples
if (FALSE) { # \dontrun{
ldf_smooths <- tibble::rowid_to_column(fitted_smooths, "draw") %>%
tidyr::pivot_longer(., cols = !starts_with("d")) %>%
dplyr::rename('year' = name, "proj_y" = value)%>%
dplyr::mutate(year = as.integer(year))
trend_sm <- get_trend(ldf_smooths, start_yr = 2014, end_yr = 2022, method = "gmean")
} # }