MATLAB: Help me plz, Empty matrix!

Question

hi, I have this code

clc;clear all;close all
a=dir('*.nc');
 for i=2:numel(a)
    nc_cat('ts_oaflux_1958.nc',a(i).name);
 end
 f=nc_varget('ts_oaflux_1958-2012.nc','tmpsf');
 d=find(f>30000);
 f(d)=nan;

when I run it I get this error:

 d =
   Empty matrix: 0-by-1

please help me argent this is my final exam code 🙁

Thank u in advance.

Answer 1

the 0 sized matrix means that non of the elements of f are greater than 30000, so if you want solve the problem, try this:

d=find(f>30000);
if any(d)
  f(d)=nan;
end