A format catalog is a collection of formats. A format
collection allows you to manage and store formats as a unit. The
fcat function defines the format catalog.
fcat(..., log = TRUE)A set of formats. Pass the formats as a name/value pair. Multiple name/value pairs are separated by a comma.
Whether to log the creation of the format catalog. Default is TRUE. This parameter is used internally.
The format catalog object.
A format catalog is an S3 object of class "fcat". The purpose of
the catalog is to combine related formats, and allow you to manipulate all
of them as a single object. The format catalog can be saved to/from a file
using the write.fcat and read.fcat functions.
A format catalog can also
be converted to/from a data frame using the as.fcat.data.frame
and as.data.frame.fcat functions. Formats are accessed in the
catalog using list syntax.
A format catalog can be used to assign formats to a data frame
or tibble using the formats function. Formats may be applied
using the fdata and fapply functions.
A format catalog may contain any type of format except a formatting list.
Allowed formats include a formatting string, a named vector lookup, a
user-defined format, and a vectorized formatting function. A formatting
list can be converted to a format catalog and saved independently. See the
flist function for more information on formatting lists.
formats function for assigning formats to a data
frame, and the fdata and fapply functions for
applying formats.
Other fcat:
as.data.frame.fcat(),
as.fcat(),
as.fcat.data.frame(),
as.fcat.fmt_lst(),
as.fcat.list(),
is.fcat(),
print.fcat(),
read.fcat(),
write.fcat()
# Create format catalog
c1 <- fcat(num_fmt = "%.1f",
label_fmt = value(condition(x == "A", "Label A"),
condition(x == "B", "Label B"),
condition(TRUE, "Other")),
date_fmt = "%d%b%Y")
# Use formats in the catalog
fapply(2, c1$num_fmt)
# [1] "2.0"
fapply(c("A", "B", "C", "B"), c1$label_fmt)
# [1] "Label A" "Label B" "Other" "Label B"
fapply(Sys.Date(), c1$date_fmt)
# [1] "06Jan2024"