Compute growth of trees

Source: R/data_processing_functions.R

Based on two tree censuses, compute the average annual growth in dbh for all trees.

compute_growth(census_1, census_2, id)

Arguments

census_1

A data frame of the first census.
census_2

A data frame of the second (later) census
id

Name of variable that uniquely identifies each tree common to census_1 and census_2 allowing you to join/merge both data frames.

Value

An sf data frame with column growth giving the average annual growth in dbh.

See also

Other data processing functions: create_bayes_lm_data(), create_focal_vs_comp()

Examples

library(dplyr)
library(stringr)

growth_ex <-
  compute_growth(
    census_1 = census_1_ex %>%
      mutate(sp = to_any_case(sp) %>% factor()),
    census_2 = census_2_ex %>%
      filter(!str_detect(codes, "R")) %>%
      mutate(sp = to_any_case(sp) %>% factor()),
    id = "ID"
  )