zero padding and fft

Hello,

I have limited knowledge of matlab and ι would like your help...

I have a 2x2624 matrix and I want to isolate a part of the signal(for example (13 14.5 -0.08 0.08), then i want to zero pad before and after this area and perform fft to this part.Finally,make its length equal to 2048.

e.g. the data are

fs=100; % sampling rate
F=10;   %frequency
N=1000; %signal with N samples 
t= 0.00:0.01:26.23;
x=[my matrix!!!!!]

It would be a great help if anyone has any idea Thanks