errors: Handle Measurement Uncertainty on a Numeric Vector
Description
Set or retrieve measurement uncertainty to/from numeric vectors (extensions
to the errors package for quantities and units objects).
Usage
# S3 method for units
errors(x)
# S3 method for mixed_units
errors(x)
# S3 method for units
errors(x) <- value
# S3 method for mixed_units
errors(x) <- value
# S3 method for units
set_errors(x, value = 0)
# S3 method for mixed_units
set_errors(x, value = 0)
# S3 method for units
errors_max(x)
# S3 method for units
errors_min(x)
Arguments
x
a numeric object, or object of class quantities, units
or errors.
value
a numeric vector or units object of length 1, or the same
length as x (see details).
Details
For objects of class quantities or units, the
errors() method returns a units object that matches the units
of x. Methods `errors<-`() and set_errors() assume that
the provided uncertainty (value) has the same units as x.
However, it is a best practice to provide a value with explicit units.
In this way, uncertainty can be provided in different (but compatible) units,
and it will be automatically converted to the units of x (see examples
below).