Insert variables from relations into header

Information associated to categories listed in slot relations can be inserted to slot header for further statistical comparisons.

Usage

relation2header(vegtable, ...)

# S3 method for vegtable
relation2header(vegtable, relation, vars, ...)

Arguments

vegtable

An vegtable object.

...

Further arguments passed among methods

relation

A character value indicating the relation to be used for inserting new variables in slot header.

vars

A selection of variables from the relation to be inserted in header. This function will check the existence of the variables in the respective relation and retrieve an error if none is matching the names. If missing in the arguments, all variables of the respective relation will be inserted.

Value

A vegtable object.

Author

Miguel Alvarez, kamapu78@gmail.com

Examples

## Insert publication year of the source into header
veg <- relation2header(Kenya_veg, "REFERENCE", "YEAR")

## Show the frequency of plots per publication year
summary(as.factor(veg$YEAR))
#> 1990 1991 1994 2002 2014 
#>  325  693  610  262   56