veg_relation: Retrieve or replace relations in vegtable objects

In vegtable: Handling Vegetation Data Sets

Retrieve or replace relations in vegtable objects

Description

Tables providing information about levels of categorical variables in the header are called popups in Turboveg databases but relations in vegtable objects. Such variables will be converted into factors in the slot header according to the levels and their sorting in the respective relation.

Usage

veg_relation(vegtable, relation, ...)

## S4 method for signature 'vegtable,character'
veg_relation(vegtable, relation, match_header = FALSE, ...)

veg_relation(vegtable) <- value

## S4 replacement method for signature 'vegtable,data.frame'
veg_relation(vegtable) <- value

Arguments

vegtable	An object of class vegtable.
relation	A character value indicating the relation table to be retrieved or replaced.
...	Further arguments to be passed among methods.
match_header	A logical vector, whether only levels occurring in slot header should be considered or all.
value	A data frame containing the new veg_relation.

Value

This function retrieves and object of class data.frame. In the replacement method, an object of class vegtable, including value in the slot relations.

Author(s)

Miguel Alvarez [e-mail]

Examples

## overview of references
veg_relation(Kenya_veg, "REFERENCE")

vegtable documentation built on March 31, 2023, 10:33 p.m.