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Last data update: 2014.03.03

R: Utility functions, mostly for character manipulation

nameAlnum

R Documentation

Utility functions, mostly for character manipulation

Description

Utility functions, mostly for character manipulation.

Usage

pasteDate(..., sep = " ", collapse = NULL, sep.date = sep)
paste0date(..., collapse = NULL)
nameAlnum(x, capitalize=c("asis", "first", "none", "all", "mixed"), 
    collapse=" ")
compare_sets(x, y)
find_max(x)
find_min(x)

Arguments

`x, y`	caharacter for `nameAlnum`, any type for `compare_sets`, matrix for `find_max` and `find_min`.
`...`	one or more R objects, to be converted to character vectors.
`sep`	a character string to separate the terms.
`collapse`	an optional character string to separate the results. For `nameAlnum` it is the separator between the words in the output.
`sep.date`	a character string to separate the terms from the data itself.
`capitalize`	character, which letter of each words should be capitalized. `"mixed"` capitalizes the first letter and case is unchanged for the rest. `"first"` capitalizes first letter and uses lower case for the rest. Other options are self explanatory.

Value

Character vector.

A matrix compare_sets.

A data frame for find_max and find_min.

Author(s)

Peter Solymos <solymos@ualberta.ca>

Examples

paste0(pasteDate("file", "name", sep="-", sep.date="_"), ".csv")
paste0(paste0date("file", "name", sep.date="_"), ".csv")

data(abmibirds)
x <- data.frame(Name=levels(abmibirds[["Common.Name"]]),
    NameAlnum=nameAlnum(levels(abmibirds[["Common.Name"]])))
x[grep("'", x$Name),]

## numeric vector
compare_sets(1:10, 8:15)
## factor with 'zombie' labels
compare_sets(factor(1:10, levels=1:10), factor(8:15, levels=1:15))

(mat <- matrix(rnorm(10*5), 10, 5))
(m <- find_max(mat))
## column indices
as.integer(m$index)
find_min(mat)