Assign Label to an Object and Return It

This function assigns a label to any kind of object. The label later can be retrieved and reused.

Usage

label(x)
label(x) <- value

Arguments

value

any expression.

x

any object.

Details

The label can be any expression assigned to any object. It is stored as a character attribute. Inheritance is not implemented, so by any transformation of the object into another one, the label is lost.

Value

Print out the label value.

References

S\'olymos P. (2008) mefa: an R package for handling and reporting count data. Community Ecology 9, 125--127.

S\'olymos P. (2009) Processing ecological data in R with the mefa package. Journal of Statistical Software 29(8), 1--28. doi:10.18637/jss.v029.i08

http://mefa.r-forge.r-project.org/

Author

P\'eter S\'olymos, solymos@ualberta.ca

Examples

x <- 1:10
x
#>  [1]  1  2  3  4  5  6  7  8  9 10
## Assign a character
label(x) <- "x is a vector"
x
#>  [1]  1  2  3  4  5  6  7  8  9 10
#> attr(,"label")
#> [1] "x is a vector"
## Get back the label
label(x)
#> [1] "x is a vector"
## Note the effect of deparsing
label(x) <- 1:10
label(x)
#> [1] "1:10"