Is there a way to plot discrete data using Draw2D function. I see there is a method of plotting by defining points within maxima using method shown below.



I've been able to plot just points themselves using the points() function. But haven't been able to figure out how to get the connecting lines without defining explicit functions.

use the option points_joined=true

The snippet "Draw-descriptions" provides help texts for the graphics objects and options.

See the Handbuch for examples.

Beautiful. Thank you. Exactly what I was looking for.

Wrote

But haven't been able to figure out how to get the connecting lines without defining explicit functions.

Your query is misleading: Draw 2d discrete is not same as showing junction lines.
If you really want the junction lines as discrete points, you must have a creator.
Just from junction lines [that can't be extracted] you can't derive/integrate,
neither compute the arc length ... The display junction shows the path of the
junction between points, only ... not much use.

If you have more specific needs, please do not hesitate.