What is 'fz' in fontsize?

I came across the code: set(gca, 'fontsize', fz). My knowledge is that we can give numerical values to 'fontsize'. So what does 'fz' indicate here?

Answer 1

[Image Analyst]

fz is a variable that they had previously set. Search all your code (control-shift F) for fz and you'll find a line like

fz = 15;

[Ziyu Chen]

Yes, it's the first line in the file... Thanks!