The is.format
function can be used to determine if an object is a
user-defined format of class "fmt".
is.format(x)
x | A user-defined format of class "fmt". |
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A logical value or TRUE or FALSE.
The is.format
function returns TRUE if the object passed is a
user-defined format. User-defined formats are defined using the value
function. See the value
function help for further details.
value
to define a format,
condition
to define the conditions for a format, and
fapply
to apply the format to a vector.
# Define format fmt1 <- value(condition(x == "A", "Label A"), condition(x == "B", "Label B"), condition(TRUE, "Other")) # Check for format is.format(fmt1) is.format("A")