What is the purpose of lines 1-7 of this code?

ELEVATED=[]
[fname path]=uigetfile('*.mat');
fname=strcat(path,fname);
          load(fname );
        1)  z=zeros(100,1);
        2)  A=val(1,:)
        3)  v1=val(1,:)-val(1,1)
        4)  A=v1
        5)  A=A'
        6)  zc=A(1)
        7)  A=[z;A;z]
        %   s = A(1:1:400);
          s = A;
          ls = length(s);
          figure(1)
          plot(s);
          title('Actual Signal'),grid on

Answer 1

[abouessire ismail]

Hi !!

i have some note for you.

-from 2 to 4, you can also use

A=val(1,:)-val(1,1);

-6 line unusefull because we doesn't work with

the variable zc.

-work directly with A why you use may variable.

that's it.