CreateConceptLevels.Rd
Creates a list of data.tables describing the organizational structure of the ERA concept hierarchy for use in other ERA functions and interactive apps.
CreateConceptLevels()
CreateConceptLevels returns a list of four elements each a data.table
:
Prac.Levels
Practice concept organizational levels
Out.Levels
Outcome concept organizational levels
Prod.Levels
Product (also called EU or experimental units) concept organizational levels
Agg.Levels
This data.table describes fields that can be used to aggregate data. Observation
= no aggregation; each row of ERA is an observation, Study
= the publication/study an
observation is reported from, and Location
the spatial location of an observation (a combination of latitude, longitude and a buffer of uncertainty).
Choice
and Choice.Code
fields are simplified names/codes for hierarchical concept levels for user selection task. The remaining columns indicate the corresponding
column names in the ERA dataset for user selections.