asCharacterNoWarn

is a vector, probably of numbers of characters

correctly converts factors to vectors, and then converts to
  character, which may silently introduce NAs

internal

This package allows accurate manipulation, conversion, validation
    and comparison of ICD-9-CM (clinical modification) codes. Although ICD-9
    codes appear numeric, this is not the case, since trailing zeroes, and a
    mixture of decimal and non-decimal "short" format codes exist. Tools to map
    ICD-9 codes to co-morbidities are also provided, with mappings from Quan
    (Deyo and Elixhauser versions), Elixhauser and AHRQ included.

asCharacterNoWarn: convert factor or vector to character without warnings

Description

Usage

Arguments

Value