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Extracts a specific parameter from an era object.
era_label(x)era_epoch(x)era_name(x)era_unit(x)era_scale(x)era_direction(x)
era_epoch(x)
era_name(x)
era_unit(x)
era_scale(x)
era_direction(x)
Value of the parameter.
An era object.
era
The available parameters are:
label – unique, abbreviated label of the era, e.g. "cal BP"
epoch – year of origin of the era, e.g. 1950 for Before Present
name – full name of the era, e.g. "calendar years Before Present"
unit – unit of years used, an era_year() object
era_year()
scale – multiple of years used, e.g. 1000 for ka/kiloannum
direction – whether years are counted "backwards" or "forwards" from the epoch #'
Other era helper functions: era_year_parameters, era_year, era, is_era_year(), is_era(), is_yr(), this_year()
era_year_parameters
era_year
is_era_year()
is_era()
is_yr()
this_year()
x <- era("cal BP") era_name(x)
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