[nkleekamp]

OK, I'm marking this as resolved. For posterity, add_image_size() does generate individual files if you have the proper dependencies installed. My issue was related to not having php5-imagick installed. Thanks again!

[nkleekamp]

Thanks coralseait for the reply!

I'm doing that with the Regenerate Thumbnails plugin, but I'm only seeing the original image size, along with those defined in Settings > Media. When I upload new images, I'm not seeing the sizes that I have defined in my functions file either.

Hence my question, is the add_image_sizes() function supposed to generate individual image files at the sizes defined in the functions file, or does it just add the width/height attributes to the tag?

[nkleekamp]

I found the answer on StackExchange and expanded it with a little more info from the Codex.

For anyone else that might need it, here was my solution.

//* Include Custom Post Types in author, category, and tag archive page
function __set_cpt_for_archives( &$query ) {
	$post_types = array( 'post', 'portfolio', 'publication' );
	$archive_types = array( 'is_author', 'is_tag', 'is_category' );

	foreach ( $archive_types as $key => $val ) {
		if ( $query->$val ) {
			$query->set( 'post_type', $post_types );
			remove_action( 'pre_get_posts', '__set_cpt_for_archives' );
		}
	}
}

add_action( 'pre_get_posts', '__set_cpt_for_archives' );

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