Hi everyone, could you help me for that comments is correct or not correct?, (You can add new comment)

 global nfile A flag
                [fil pth]=uigetfile('.dat','Enter File Name Wich You Want to Work')
                file=[pth fil]; 
                fid=fopen(file,'r');
                nfile=fread(fid);
                nfile=imresize(nfile,[183 1]);   % Signal compressed in a [183 1] array
                 axes(handles.axes1)
                plot(nfile,'-'), title('Original Signal')

                figure(1),plot(nfile,'-'), title('Original Signal')

                z=zeros(100,1);    
                A=[z;nfile;z];  %it is use for  low pass and high pass filter
                axes(handles.axes2)
                plot(A,'-'),title('Original Signal With Pad')

                figure(2),plot(A,'-'),title('Original Signal With Pad')
                flag=2;

[Jan]

If the code is correct or not depends on its purpose. Does it run without an error message? Does it create the wanted results? We cannot guess this, so you have to provide more information.