Problem using SDD with DAC

Hello,

I am new to ADS. Hence, I am elaborating my problem. Please give a detailed answer.

I have discrete values of current (I) and voltage (V) in a table. I have written the values of current and voltage in a CITI file. I am trying to read a CITI file using DAC. 

Now, I want to use these values in a SDD and plot current vs. voltage. But, I am confused as SDD does not deal with discrete points. Moreover, SDD takes atleast one equation, how do I give an equation if I have the values with me? Please help.