How to draw the scatter diagram and line graph in the batch mode?

[ecofine]

Hello!

I am trying to draw a one to one relation line graph between two variables like regression line.
Could you help me to draw this one to one relation by uisng batch mode?
It is not a simple line graph just showing two different trends of data depending on time.
But it is shoiwng a realtional line graph for negative or posive or no relations between two variables or more variables;
one independnt and other dependent variables.

Thank you very much.