Description Usage Arguments Details Value
View source: R/class_definitions.R
The function response
creates response design objects that store the
results of a particular response design that was applied at given sample
locations to some tree population. The function is only used internally by
the functions that apply the particular response designs:
fixed_area
, k_tree
, angle_count
.
1 |
data |
A |
r_design |
A |
r_design_parm |
A response design specific parameter of type
|
ef |
The expansion factor, i.e., the factor that is used to prorate tree attributes to per hectare values (the inverse of the inclusion probabilities). Provided by the particular response design functions. |
ef_alt1 |
Alternative expansion factor that may be applied when using k-tree sampling. |
ef_alt2 |
A third alternative expansion factor approximation for k-tree sampling |
The data.table
object (data
) should
have the following columns:
id_sample
id_point
s
ef
Some response designs (currently only k_tree
), may add
additional alternative expansion factors as optional approximations, where
unbiased estimators are missing or difficult to derive.
An object of class response
. A named list with the following
entries:
$data
A data.table
object as described above.
$r_design
$r_design_parm
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