Description Usage Arguments Value
See tidyr
documentation of the respective functions for
description and examples.
1 2 3 |
data |
an object of class |
... |
Specification of columns to expand. To find all unique combinations of x, y and z, including those not
found in the data, supply each variable as a separate argument.
To find only the combinations that occur in the data, use nest:
You can combine the two forms. For example,
For factors, the full set of levels (not just those that appear in the
data) are used. For continuous variables, you may need to fill in values
that don't appear in the data: to do so use expressions like
Length-zero (empty) elements are automatically dropped. |
.direction |
Direction in which to fill missing values. Currently either "down" (the default) or "up". |
keep_attributes |
conserve attributes? defaults to |
A modified ped
object.
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