The set data style command changes the default plotting style for data plots.
Syntax:
set data style
show data style
set data style <style-choice>
In the first case, set data style returns the possible style
choices: lines, points, linespoints, dots, steps,
impulses, errorbars, boxes or boxerrorbars. show data style
shows the current default plotting style for data. set data style dots
would actually change the default plotting style. See also plot.