Question

In case of the plot which parameter decides whether the plot should be line or points or both in r

Answer 1

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Answer 2

In case of plot probably plotting of a graph .the perpendicular and verticle axis is important .

On whether the plot should be doted or a continous line depends on the parameters involved and the nature of the graph .

A graph of maybe a function of change in width and respective change in length is a straight line