A helper function: Initializes a data frame for plus_minus()
.
plus_minus_setup(evaluated, attributes, minus, plus)
A data frame consisting of columns:
"id"
Attribute IDs.
"structure"
Attribute $structure() + $name
.
counts
Attributes' scale sizes.
low_bounds
Low bounds of attributes' values.
high_bounds
High bounds of attributes' values.
low_diff
Maximum possible value decrease given low_bound
and attribute scale.
high_diff
Maximum possible value increase given high_bound
and attribute scale.
evals
Alternative evaluation for the corresponding attribute (from evaluated
).
sets
evals
represented as value sets.
An evaluated alternative.
Vector of DexiAttribute objects involved in plus-minus
analysis.
A single integer: Maximum steps down.
A single integer: Maximum steps up.
plus_minus()