DiscretePlot

A discrete step/bar plot sampling a function at the left, middle, or right of each interval — useful for Riemann-sum and accumulation illustrations.

real value(real x) { return 1000 * exp(log(1.05) * x); }

DiscretePlot g = DiscretePlot(1, 0, "left", 8, value);
g.set_window(-0.5, 8.5, 0, 0);   // ymin == ymax => auto-compute the y-window

Image img = Image();

img.width(12);

img.height(6);
img.padding(0.5);
img.caption_title("Figure 3");
img.caption_text("Discrete accumulation, sampled per period.");
img.add(g);

A discrete step plot of compound interest

Methods

Method	Purpose
`DiscretePlot(dx=1, first_x=0, anchor="left", steps=10, func=identity, xmin=0, xmax=0, ymin=0, ymax=0)`	Build and sample
`set_dx / set_first_x / set_steps(...)`	Change sampling geometry
`set_anchor("left"\\|"mid"\\|"right")`	Where each interval is sampled
`set_function(func)`	Replace the function and re-sample
`set_window(xmin, xmax, ymin, ymax)`	Set the view (equal min==max leaves that axis auto)
`set_debug_mode(bool)`	Draw bounds