How I can produce the transfer function of digital signal data without knowing the function?

Hello all,

I have 512 acceleration data points. I want to identify the transfer function of the signal.

Example of my data points: x = [0 0.002 0.0039 0.0059 0.0078 0.0098 0.0117]; time(s) y = [-0.5570 0.1310 0.4010 0.0722 -0.5210 -0.8090 -0.7230]; acceleration (m/s2)

The problems happened when I looked around MATLAB code needs a function. By I dont.

Please advice.

Thank you for your time.

Regards, SMY