spatstat.utils (version 3.1-2)

cat.factor: Combine Several Factors

Description

Combine (concatenate) several factor objects, to produce a factor.

Usage

cat.factor(...)

Value

A factor, whose length is the sum of the lengths of all arguments. The levels of the resulting factor are the union of the levels of the arguments.

Arguments

...

Any number of arguments. Each argument should be a factor, or will be converted to a factor.

Author

Rolf Turner .

Details

The arguments ... are concatenated as they would be using c() or cat(), except that factor levels are retained and merged correctly. See the Examples.

See Also

c.

Examples

   f <- factor(letters[1:3])
   g <- factor(letters[3:5])
   f
   g
   cat(f,g)
   c(f,g)
   cat.factor(f, g)