nochars

text

<p>Remove letters and characters from a string to leave only numbers. Removes
all letters (upper and lower case) and the characters &#8220;.&#8221;, &#8220;(&#8221;
and &#8220;)&#8221;. For internal use only.</p>

Routines for the seasonal analysis of health data, including regression models, time-stratified case-crossover, plotting functions and residual checks, see Barnett and Dobson (2010) ISBN 978-3-642-10748-1. Thanks to Yuming Guo for checking the case-crossover code.

Adrian Barnett

nochars: Remove Letters and Characters from a String

Description

Arguments