Description Usage Arguments Value Examples
View source: R/new_equations.R
This function modifies the original equation table to be used in other functions of the package including: subset the original equation table, add new equations, and choose whether to include equations with a height allometry.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18  new_equations(
subset_taxa = "all",
subset_climate = "all",
subset_region = "all",
subset_ids = "all",
subset_output = c("Total aboveground biomass", "Whole tree (above stump)"),
new_taxa = NULL,
new_allometry = NULL,
new_coords = NULL,
new_min_dbh = NULL,
new_max_dbh = NULL,
new_sample_size = NULL,
new_unit_dbh = "cm",
new_unit_output = "kg",
new_input_var = "DBH",
new_output_var = "Total aboveground biomass",
use_height_allom = TRUE
)

subset_taxa 
character vector with taxa to be kept. Default is "all", in which case all taxa are kept. 
subset_climate 
character vector with Koppen climate classification to be kept. Default is "all", in which case all climates are kept. 
subset_region 
character vector with name of location(s) or country(ies) or broader region(s) (eg. "Europe", "North America") to be kept. Default is "all", in which case all regions/countries are kept. 
subset_ids 
character vector with equation IDs to be kept. Default is "all", in which case all equations are kept. 
subset_output 
What dependent variable(s) should be provided in the output? Default is "Total aboveground biomass" and "Whole tree (above stump)", other possible values are: "Bark biomass", "Branches (dead)", "Branches (live)", "Branches total (live, dead)", "Foliage total", "Height", "Leaves", "Stem (wood only)", "Stem biomass", "Stem biomass (with bark)", "Stem biomass (without bark)", "Whole tree (above and belowground)". Be aware that currently only a few equations represent those other variables, so estimated values might not be very accurate. 
new_taxa 
character string or vector specifying the taxon (or taxa) for which the allometry has been calibrated. 
new_allometry 
a character string with the allometric equation. 
new_coords 
a vector or matrix of coordinates (longitude, latitude) of the calibration data. 
new_min_dbh 
numerical value, minimum DBH for which the equation is
valid (in cm). Default is 
new_max_dbh 
numerical value, maximum DBH for which the equation is
valid (in cm). Default is 
new_sample_size 
number of measurements with which the allometry was
calibrated. Default is 
new_unit_dbh 
character string with unit of DBH in the equation (either

new_unit_output 
character string with unit of equation output (either "g", "kg", "Mg" or "lbs" if the output is a mass, or "m" if the output is a height). 
new_input_var 
independent variable(s) needed in the allometry. Default is "DBH", other option is "DBH, H". 
new_output_var 
dependent variable estimated by the allometry. Default is "Total aboveground biomass". 
use_height_allom 
a logical value. In allodb we use Bohn et al.
(2014) for European sites. User need to provide height allometry when
needed to calculate AGB. Default is 
An object of class "data.frame" of new equations.
1 2 3 4 5 6 7 8  new_equations(
new_taxa = "Faga",
new_allometry = "exp(2+log(dbh)*2.5)",
new_coords = c(0.07, 46.11),
new_min_dbh = 5,
new_max_dbh = 50,
new_sample_size = 50
)

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