preserve_na: Preserve and restore NA information within a vector

In mnirs: Muscle Near-Infrared Spectroscopy Processing and Analysis

Preserve and restore NA information within a vector

Description

preserve_na() stores NA vector positions and extracts valid non-NA values for later restoration with restore_na().

restore_na() restores NA values to their original vector positions after processing valid non-NA values returned from preserve_na().

Usage

preserve_na(x)

restore_na(y, na_info)

Arguments

x	A vector containing missing NA values.
y	A vector of valid non-NA values returned from preserve_na().
na_info	A list returned from preserve_na().

Value

preserve_na() returns a list na_info with components:

• na_info$x_valid: A vector with NA values removed.

• na_info$x_length: A numeric value of the original input vector length.

• na_info$na_idx: A logical vector preserving NA positions.

restore_na() returns a vector y the same length as the original input vector x with NA values restored to their original positions.

mnirs documentation built on May 15, 2026, 9:07 a.m.