The linespoints style connects adjacent points with straight line segments and then goes back to draw a small symbol at each point. The command pointsize may be used to change the default size of the points. 1 or 2 columns of basic input data are required in 2D plots; 1 or 3 columns are required if 3D plots. See `style lines`. Additional input columns may be used to provide information such as variable point size or line color.
The `pointinterval` (short form `pi`) property of the line style can be used to control whether or not every point in the plot is given a symbol. For example, 'with lp pi 3' will draw line segments through every data point, but will only place a symbol on every 3rd point. A negative value for `pointinterval` will erase the portion of line segment that passes underneath the symbol.
linespoints may be abbreviated `lp`.