Reinhard, you are genius.
I am one of the few WeatherCatters using a WordPress site. In WordPress, all uploads go into a folder called
uploads. On my site, I created a folder in
uploads called
Weather. All of my FTP for WeatherCat goes into the
Weather folder. This is where sunplot.php and the font reside. I just needed to specify the full path name (Duh!!):
$fontFile = $_SERVER['DOCUMENT_ROOT'] . '/wp-content/uploads/Weather/DINAlternateBold.otf';
Thank you for patiently prompting me along on this.
Danke!