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Last data update: 2014.03.03

R: Checking if string contains letters or not

containLetters

R Documentation

Checking if string contains letters or not

Description

Test if a string contain any letters

Usage

containLetters(obj, all=FALSE)

Arguments

`obj`	String
`all`	If set to FALSE, return TRUE when any letters appears; if all is set to TRUE, return TRUE only when the string is composed of just letters.

Details

Useful when processing/sorting seqnames

Value

Logical value

Author(s)

tengfei

Examples

containLetters("XYZ123")
containLetters("XYZ123", TRUE)

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> library(biovizBase)
> png(filename="/home/ddbj/snapshot/RGM3/R_BC/result/biovizBase/containLetters.Rd_%03d_medium.png", width=480, height=480)
> ### Name: containLetters
> ### Title: Checking if string contains letters or not
> ### Aliases: containLetters
> 
> ### ** Examples
> containLetters("XYZ123")
[1] TRUE
> containLetters("XYZ123", TRUE)
[1] FALSE
> 
> 
> 
> 
> dev.off()
null device 
          1 
>