skipping files in for loop

Hello, I have multiple multiple files with similar names like 20210615_sh05_Ref.spe and 20210615_sh05_.spe.

I want to process only the files that contain the word Ref in it but my code is still processing all of them. I am assuming I am not indicating well the indices that I want to extract from strfind(w) but im not sure how to fix it.

Essentially, if the file contains the word reference, then process it, if not, then skip to the next file. Then I want to gather those results in an aray so I can average them.

Where did I go wrong? Thank you a lot!! (sorry for the language mix on my script I ran out of variable names)

tipodearchivo= dir('20210615_sh*.spe'); %Find all spe files in folder
nombres = {tipodearchivo.name}; 
cantidad = length(nombres);
cuenta = 0 ; 
% Find reference files and take em out of the loop
w= strfind(nombres,'Ref');
 for s=1:cantidad %Itiretae over shot files
         nombres{s};
         theresults=zeros(9,2);

  Resultados=zeros([],5);
if ~isempty(w)%If h is not empty, then its a reference image, calculate   

    for t=1500:-1:600  %t=150:50:1600 %Time; 
        for g=150:100:1608 
            for u=g+100   
[z,pos]=min (s1(g:u,t));
     minpixel=g+pos;   
[z1,pos1]=min (s1(u:u+100,t)); 
     minpixel1= u+pos1;        
Size= minpixel1-minpixel; 
   
 cuenta = cuenta+1 ; 
 Resultados(cuenta,:)=[cuenta t g u  Size];
            end
   end
    end
 AverageSizeOneShot=mean(Resultados(:,5))% Size of one fringe Average of 101Pixels seems fine for shot 5
 end
tamanios=mean(AverageSizeOneShot);
 theresults(9,:)=[tamanios];
 end

[Jan]

Some hints:

nombres{s};  % Omit this, because this does nothing

for g=150:100:1608 
    for u=g+100   % This is not a loop. Use this for clarity:
    u = g + 100;

    
theresults(9,:) = tamanios;   % No need for square brackets

Answer 1

[Walter Roberson]

Change

if ~isempty(w)%If h is not empty, then its a reference image, calculate   

to

if ~isempty(w{s})%If h is not empty, then its a reference image, calculate 

However... you could instead

    tipodearchivo= dir('20210615_sh*Ref.spe'); %Find all Ref spe files in folder

and then you would not need any filtering

Also, instead of the approach you are using with strfind() and isempty, you could instead use

    w = contains(nombres,'Ref');
    stuff
    if w(i)

[Macarena Santillan]

Thnak you SO much ! it works!