On Mon, 27 Jul 2020, Dhanasekaran Kuppusamy wrote:
 How to present two lines diagram (A and B) in a single diagram 
 using two matrices A and B of the same size (20x1)? 
matrix C = A ~ B
gnuplot --matrix=C --time --with-lines
(add --output=display if you want the result on screen).
Allin