2.3 Codify petrographical variables
Create a two-column data frame containing the original names of petrographic variables and their respective codes:
varCode <- code_variables(amphorae)Petrographic variables must be named following cerUB naming system. Consult the documentation on the “amphorae” dataset by running:
?amphoraeThe result of the code_variables function is used in the apply_ordination function for protocols “2a”, “2b”, “3”, and “4” (i.e., whenever there are ordinal input variables). The data frame containing the codification (‘varCode’) is attached as “ordination_object$variable_tags” to the resulting ordination object.
| Variable name | Variable code |
|---|---|
| Site_Name | Site_Name |
| LOCATION_SITE_INITIALS | LOCATION_SITE_INITIALS |
| CHARAC | CHARAC |
| FabricGroup | FabricGroup |
| ChemReferenceGroup | ChemReferenceGroup |
| INCLUS_DISTRIB | I1 |
| INCLUS_ORIENT | I2 |
| TEMP | F1 |
| ATM | F2 |
| POST_ATM | F3 |
| VOID_OVERALL | V1 |
| VOID_VESIC_MEGA | V2 |
| … | … |