insert_zeros: insert zeros into a character vector

In olobiolo/siscreenr: Analyze Genome-Wide siRNA Screening Campaigns

Description

Insert a string of zeros into every item of a character vector. A1 becomes A01. The orginal intent was to fix sorting of strings where 2 > 12 but 02 < 12. More robust options were built in just in case.

Usage

insert_zeros(x, ...)

## S3 method for class 'character'
insert_zeros(x, zeros = "auto", after = 1, ...)

## S3 method for class 'factor'
insert_zeros(x, zeros = "auto", after = 1, ...)

## S3 method for class 'integer'
insert_zeros(x, zeros = "auto", after = 1, ...)

## S3 method for class 'double'
insert_zeros(x, zeros = "auto", after = 1, ...)

## Default S3 method:
insert_zeros(x, zeros = "auto", after = 1, ...)

Arguments

x	character or integer vector; double vectors are handled only if they can be converted to integer and pass as all.equal
...	arguments passed to methods
zeros	number of 0 characters to insert; see Details
after	position of the character after which the zeros will be inserted

Details

The zeros argument can be a fixed number but it defaults to auto. Then: if X is of length 1, adds 1 0; if X is longer than 1, adds to each element a number of 0 so that all elements of X have an equal number of characters.

Value

Modified character vector, where strings of zeros have been inserted at the specified position.

Methods (by class)

• character: the basic method

• factor: runs on levels of x rather than its body

• integer: coerces to character and calls character method

• double: attempts to convert to integer and calls integer method

• default: throws error for non-supperted classes

olobiolo/siscreenr documentation built on Nov. 26, 2021, 3:08 p.m.