vc_ | R Documentation |
Generic column validation
vc_(data, x, expr, augment_comment = NULL, ...)
data |
A data frame. |
x |
Column name from |
expr |
An string that can be evaluated elementwise as an expression to
test on |
augment_comment |
details to be added to message, if any |
... |
ignored. |
Returns a vc
classed list object.
vc_(mtcars, 'mpg', 'abs(scale(mpg)) < 2') vc_(mtcars, 'mpg', 'abs(scale(mpg)) < 2', augment_comment = "...\n because they may be (outliers > 2 sd)") vc_(CO2, 'Type', '!grepl("^M", Type)', augment_comment = " because they don't begin with `M`") vc_(mtcars, 'drat', 'drat >= wt', augment_comment = " because `drat` is less than `wt`") str(vc_(mtcars, 'mpg', 'abs(scale(mpg)) < 2'))
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