AggregateLayers: Aggregate Layers
In bbest/ohigui: Ocean Health Index - Graphical User Interface

Description Usage Arguments Value Examples

Aggregate by country, country and year, or some other weight.

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  aggregate_by_country(df, col.value = "value",
    col.country = "country_id",
    lyrs.dat.csv = layers_data.csv)

`df`	Input data frame.
`col.value`	Column in data frame containing the value to be aggregated.
`col.country`	Column in data frame containing the country_id.
`col.weight`	Column in data frame containing the weight.

These functions aggregate to region by either country, country and year, or just a weight. These are mostly only used for aggregating a goal's status or trend calculations to region.

## Not run: 
    aggregate_by_country(df, col.value='value', col.country='country_id')
    aggregate_by_country_weighted(df, w, col.value='value', col.country='country_id', col.weight='weight')
    aggregate_by_country_year(df, col.value='value', col.country='country_id')
  
## End(Not run)