Edit the author box picture size with Genesis (advanced version)

functions.php

<?php
// Paste the code BELOW this line into your child theme functions.

/**
 * Edit the author box picture size with Genesis (advanced version)
 *
 * @author Reasons to Use Genesis
 * @link http://reasonstousegenesis.com/author-box-gravatar-size/
 */
add_filter( 'genesis_author_box_gravatar_size', 'rtug_author_box_gravatar_size_context', 10, 2 );
function rtug_author_box_gravatar_size_context( $gravatar_size, $context ) {
	
	if ( 'archive' === $context )
		$gravatar_size = 250;
		
	return $gravatar_size;
}