How to exclude some cats from wp_list_categories using shortcut

by

Exclude needs to be in the $cat_args, and in the shortcode_atts. Like this:
extract( shortcode_atts( array(
‘exclude’ => ”,
‘categoriespostcount’ => ‘on’,
‘categorieshierarchy’ => ‘on’,
), $atts ) );

$cat_args = array(
    'exclude' => $exclude,
    'taxonomy' => 'theme_portfolio_categories',
    'show_count' => $c,
    'hierarchical' => $h,
    'echo' => 0
);