| df_volume_parameters {MLFS} | R Documentation |
An example table with parameters and equations for n-parametric volume functions
Description
Volume functions can be specified for each species and plot separately, also limited to specific DBH interval. The factor variables (vol_factor, h_factor and DBH_factor) are used to control the input and output units.
Usage
df_volume_parameters
Format
A data frame with 6 rows and 14 variables:
- species
species name as used in data_NFI. The category REST is used for all species without specific equation
- equation
equation for selected volume function
- vol_factor
will be multiplied with the volume
- h_factor
will be multiplied with tree height
- d_factor
will be divided with tree DBH
- DBH_min
lower interval threshold for considered trees
- DBH_max
upper interval threshold for considered trees
- a
parameter a for volume equation
- b
parameter b for volume equation
- c
parameter c for volume equation
- d
parameter d for volume equation
- e
parameter e for volume equation
- f
parameter f for volume equation
- g
parameter g for volume equation