# signif_half_up: Round a numeric vector to the specified number of significant... In janitor: Simple Tools for Examining and Cleaning Dirty Data

## Description

In base R `signif()`, halves are rounded to even, e.g., `signif(11.5, 2)` and `signif(12.5, 2)` are both rounded to 12. This function rounds 12.5 to 13 (assuming `digits = 2`). Negative halves are rounded away from zero, e.g., `signif(-2.5, 1)` is rounded to -3.

This may skew subsequent statistical analysis of the data, but may be desirable in certain contexts. This function is implemented from https://stackoverflow.com/a/1581007/; see that question and comments for discussion of this issue.

## Usage

 `1` ```signif_half_up(x, digits = 6) ```

## Arguments

 `x` a numeric vector to round. `digits` integer indicating the number of significant digits to be used.

## Examples

 ```1 2 3``` ```signif_half_up(12.5, 2) signif_half_up(1.125, 3) signif_half_up(-2.5, 1) # negatives get rounded away from zero ```

janitor documentation built on Jan. 5, 2021, 9:07 a.m.