Gnuplot's box style is similar to a bar chart, with each value plotted as a box extending up from the axis. You can have the boxes filled with patterns, solid colors, or leave them empty.
This style is commonly used either as a type of histogram (covered later in this chapter) or as a way to compare a set of disparate items. The following figure plots boxes using the fill pattern:
It just takes the following script to get the previous figure:
set style fill pattern plot [-6:6] besj0(x) with boxes, sin(x) with boxes
The first command tells gnuplot to fill the boxes with a fill pattern, cycling through the patterns ...