Find allometric equations in allodb or in a custom equations-table.

Source: R/add_equations.R

Find allometric equations in allodb or in a custom equations-table.

add_equations(data, dbh_unit = guess_dbh_unit(data$dbh))

Arguments

data

A dataframe as those created with add_species().
dbh_unit

Character string giving the unit of dbh values, e.g. "mm" (see valid_units()).

Value

A nested dataframe with each row containing the data of an equation type.

See also

Other constructors: add_species

Examples

census <- dplyr::sample_n(fgeo.biomass::scbi_tree1, 30)
species <- fgeo.biomass::scbi_species
census_species <- add_species(
  census, species,
  site = "scbi"
)

add_equations(census_species, dbh_unit = "mm")
#> ✔ Matching equations by site and species.
#> ✔ Refining equations according to dbh.
#> ✔ Using generic equations where expert equations can't be found.
#> Warning: Can't find equations for 20 rows (inserting `NA`).
#> # A tibble: 30 x 34
#>    rowid treeID stemID tag   StemTag sp    quadrat    gx    gy DBHID CensusID
#>    <int>  <int>  <int> <chr> <chr>   <chr> <chr>   <dbl> <dbl> <int>    <int>
#>  1     1  10303  10303 90030 1       libe  0901    170.   19.1 14835        1
#>  2     2  30566  30566 2021… 1       astr  2025    393.  484.  39497        1
#>  3     3  18991  18991 1401… 1       libe  1402    278.   26.5 25469        1
#>  4     4  11465  11465 92314 1       astr  0923    180.  456.  16191        1
#>  5     5  20997  20997 1504… 1       libe  1502    287.   35   27839        1
#>  6     6  12824  12824 1012… 1       cagl  1012    200   233.  17887        1
#>  7     7   4173   4173 30549 1       fagr  0315     48.6 283.   7298        1
#>  8     8  12843  12843 1012… 1       cagl  1013    198.  258.  17907        1
#>  9     9  34749     NA 1635… <NA>    astr  1624    305.  469.     NA       NA
#> 10    10  14783  14783 1120… 1       litu  1117    204.  323   20286        1
#> # … with 20 more rows, and 23 more variables: dbh <dbl>, pom <chr>, hom <dbl>,
#> #   ExactDate <chr>, DFstatus <chr>, codes <chr>, nostems <dbl>, date <dbl>,
#> #   status <chr>, agb <dbl>, species <chr>, site <chr>, eqn_id <chr>,
#> #   eqn <chr>, eqn_source <chr>, eqn_type <chr>, anatomic_relevance <chr>,
#> #   dbh_unit <chr>, bms_unit <chr>, dbh_min_mm <dbl>, dbh_max_mm <dbl>,
#> #   is_generic <lgl>, life_form <chr>