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As an alternative to solid boxes, a graph may also be plotted with ``steps''; see panels (a), (c) and (d) of figure 5.6 for examples. As is illustrated by these panels, three flavours of steps are available (exactly as in gnuplot):
plot 'datafile' with steps plot 'datafile' with fsteps plot 'datafile' with histeps
When using the steps plot style, the datapoints specify the right-most edges of each step. By contrast, they specify the left-most edges of the steps when using the fsteps plot style. The histeps plot style works rather like the boxes plot style; the interfaces between the steps occur at the horizontal midpoints between the datapoints.