simple-plot

A simple, pgfplots-like function plotting library for Typst. Create beautiful mathematical plots with minimal code.

Note: This package is built on top of CeTZ v0.5.2.

Manual

A full manual is available in docs/manual.pdf.

Gallery

Click on an image to see the source code.

Parabola	Trigonometric Functions	Scatter Plot
Exponential & Logarithmic	Data with Model Fit	Marker Types
Extended Axes	Area Fills & Riemann Sums	Volume of Revolution
Riemann Sum Features	Zoom / Spy Insets

Features

• Simple API — Plot functions with just a few lines of code
• Multiple plot types — Functions, scatter plots, line plots with markers
• Customizable axes — Position, labels, ticks, and tick labels; default $x$/$y$ labels at arrow tips (tkz-fct style)
• Stealth arrows — Elegant axis arrowheads matching LaTeX/pgfplots style
• Axis extension — Extend axes beyond plot area for cleaner appearance
• Grid support — Major and minor grids with custom styling
• 14 marker types — Circles, squares, triangles, diamonds, stars, and more
• Origin label control — Toggle origin '0' label display
• Global defaults — Set defaults for all plots in your document
• Riemann sums — Left/right/midpoint/lower/upper rectangles; endpoint dots with labels and arrows; Δx bracket; $x_i$ subdivision labels
• Volume of revolution — 3D-style solids: arbitrary axis (horizontal, shifted, or oblique), end caps, disk cross-sections, optional coordinate axes
• Zoom / spy insets — Magnified sub-views with rectangular or circular spy glass, connector lines, and customizable accent colors
• Automatic label placement — function labels avoid overlapping curves, tick labels, and axes automatically
• Smart tick density — auto-selects nice tick spacing for large ranges; crossed labels hidden automatically
• Full styling — Customize colors, strokes, backgrounds, and more

Quick Start

#import "@preview/simple-plot:1.0.0": plot

#plot(
  xmin: -3, xmax: 3,
  ymin: -1, ymax: 9,
  show-grid: true,
  (fn: x => calc.pow(x, 2), stroke: blue + 1.5pt),
)

Axis labels default to $x$ and $y$ — no need to set them explicitly.

Basic Usage

Plotting Functions

#import "@preview/simple-plot:1.0.0": plot

// Single function
#plot(
  xmin: -5, xmax: 5,
  ymin: -5, ymax: 5,
  show-grid: "major",
  (fn: x => calc.sin(x), stroke: blue + 1.5pt),
)

// Multiple functions
#plot(
  xmin: -2 * calc.pi, xmax: 2 * calc.pi,
  ymin: -1.5, ymax: 1.5,
  (fn: x => calc.sin(x), stroke: blue + 1.2pt, label: $sin(x)$),
  (fn: x => calc.cos(x), stroke: red + 1.2pt, label: $cos(x)$),
)

Scatter Plots

#import "@preview/simple-plot:1.0.0": plot, data

#plot(
  xmin: 0, xmax: 10,
  ymin: 0, ymax: 10,
  show-grid: true,
  data(
    ((1, 2), (2, 3.5), (3, 2.8), (4, 5.2), (5, 4.8)),
    mark: "*",
    mark-fill: blue,
  ),
)

Line Plots with Markers

#import "@preview/simple-plot:1.0.0": plot, line-plot

#plot(
  xmin: 0, xmax: 10,
  ymin: 0, ymax: 12,
  axis-x-pos: "bottom",
  axis-y-pos: "left",
  line-plot(
    ((0, 0), (1, 0.5), (2, 1.8), (3, 4.2), (4, 5.1)),
    stroke: blue + 1.2pt,
    mark: "*",
    mark-fill: blue,
  ),
)

Function Labels with Positioning

Control the placement of function labels using label-pos and label-side:

#plot(
  xmin: -5, xmax: 5,
  ymin: -3, ymax: 5,
  show-grid: true,
  (fn: x => 0.2 * calc.pow(x, 2) - 2,
   stroke: blue + 1.5pt,
   label: $f(x)$,
   label-pos: 0.9,           // position along curve (0–1)
   label-side: "below-right" // placement relative to point
  ),
  (fn: x => -0.5 * x + 1,
   stroke: red + 1.5pt,
   label: $g(x)$,
   label-pos: 0.2,
   label-side: "above-right"
  ),
)

Available label-side options: "above", "below", "left", "right", "above-left", "above-right", "below-left", "below-right"

Mathematical Functions

Function	Typst syntax
Power $x^n$	calc.pow(x, n)
Square root	calc.sqrt(x)
Absolute value	calc.abs(x)
Sine, Cosine, Tangent	calc.sin(x), calc.cos(x), calc.tan(x)
Exponential $e^x$	calc.exp(x)
Natural log	calc.ln(x)
Log base b	calc.log(x, base: b)

Important: Use decimal notation (e.g. 2.0 not 2) inside lambda functions to avoid type errors.

Pedagogical Plot Helpers

Rational Function Wrapper

plot-rational is a thin wrapper around plot with defaults suited to rational-function exercises: centered axes, a visible grid, and one main function curve. Extra positional arguments are forwarded as additional series, so asymptotes and points can be added normally.

#import "@preview/simple-plot:1.0.0": plot-rational, hline

#plot-rational(
  x => (x + 1) / (x - 2),
  xmin: -5, xmax: 5,
  ymin: -6, ymax: 6,
  vertical-asymptotes: (2,),
  hline(1, stroke: stroke(paint: red, thickness: 0.7pt, dash: "dashed")),
)

Local Limit Schemas

limit-schema draws compact schematic behavior near a point a. Use finite numbers for one-sided limits, "+oo" / "-oo" for vertical asymptotic behavior, and val for the defined value at the point. schema-lim is available as an alias.

#import "@preview/simple-plot:1.0.0": limit-schema

#limit-schema(a: 1, left: 4, right: 4)              // removable hole
#limit-schema(a: 2, left: "+oo", right: "-oo")      // vertical asymptote
#limit-schema(a: 0, left: -1, right: 1, val: 0)     // jump with defined value

Parameters Reference

Plot Parameters

Parameter	Type	Default	Description
xmin, xmax	float	-5, 5	X-axis range
ymin, ymax	float	-5, 5	Y-axis range
width, height	length/float	6, 6	Plot size — a length (2cm, 30mm, ...) or a number in cm
scale	float	1	Scale factor for the entire plot
xlabel, ylabel	content	$x$, $y$	Axis labels (tkz-fct style: tucked beside the arrow tips)
show-grid	bool/str	false	true, false, "major", "minor", "both"
minor-grid-step	int	5	Minor grid subdivisions per major tick
grid-label-break	bool	true	Gap in grid lines around tick labels
axis-x-pos	float/str/none	0	X-axis position: value, "bottom", "center"; none hides the axis
axis-y-pos	float/str/none	0	Y-axis position: value, "left", "center"; none hides the axis
axis-x-extend	length/float/array	(0pt, 0.3cm)	Extend X-axis beyond the grid: value or (left, right). Lengths are absolute; bare numbers are data units (legacy)
axis-y-extend	length/float/array	(0pt, 0.3cm)	Extend Y-axis beyond the grid: value or (bottom, top). Lengths are absolute; bare numbers are data units (legacy)
show-origin	bool	true	Show "0" label at origin
origin-label-offset	array	(-0.11, -0.11)	Origin "0" label offset from (0,0) in cm
origin-label-anchor	str	"north-east"	Origin "0" label anchor
origin-leader	bool	true	Draw a subtle leader line from the origin label toward (0,0)
origin-leader-stroke	stroke	black + 0.6pt	Origin leader stroke
origin-leader-gap	float	0.025	Gap from (0,0) before the leader starts (cm)
origin-leader-end-gap	float	0.025	Gap before the label anchor (cm)
tick-label-size	length	0.65em	Tick label font size
axis-label-size	length	0.8em	Axis label (x/y) font size
unit-label-only	bool	false	Show only "1" on axes for minimal style
show-end-ticks	bool	true	Keep the tick/label at xmax/ymax when it lands on a tick (e.g. show "5"), pushing the axis slightly past it so the arrow clears the label
font	str/array	document font	Font applied to all generated text (tick labels, axis labels, origin, annotations)
style	dictionary	none	Style overrides (see Custom Styling)
series	array	none	Pre-built array of series specs (alternative to positional args)

Axis Label Placement

Labels default to tkz-fct style: $x$ sits just above the axis a little left of the right arrow, $y$ sits just left of the axis a little below the top arrow. This keeps them clear of the tick numbers (which sit below / left of the axis).

Parameter	Type	Default	Description
xlabel-pos	str/array	"end"	"end", "center", or (x, y) in data coords
ylabel-pos	str/array	"end"	same
xlabel-anchor	str/auto	auto	CeTZ anchor; auto → "south-east" at the right arrow tip
ylabel-anchor	str/auto	auto	CeTZ anchor; auto → "north-east" at the top arrow tip
xlabel-offset	array	(-0.05, 0.08)	Offset (x, y) in cm from arrow tip
ylabel-offset	array	(-0.08, -0.05)	Offset (x, y) in cm from arrow tip

Tick Configuration

Parameter	Type	Default	Description
xtick, ytick	auto/none/array	auto	Tick positions
xtick-step, ytick-step	auto/float	1	Step between ticks
xtick-label-step, ytick-label-step	int	1	Show label every N ticks
xtick-labels, ytick-labels	auto/array	auto	Custom tick labels

Function Specification

(
  fn: x => ...,           // Required: the function
  stroke: blue + 1.2pt,   // Line style
  domain: (min, max),     // Restrict domain
  samples: 100,           // Sample points
  label: $f(x)$,          // Label content
  label-pos: 0.8,         // Position along curve (0–1)
  label-side: "above",    // "above", "below", "left", "right", "above-left", …
  mark: "o",              // Marker type
  mark-size: 0.1,
  mark-fill: white,
  mark-stroke: blue,
  mark-interval: 10,      // Show marker every N points
)

Riemann Sums

#import "@preview/simple-plot:1.0.0": plot, riemann-sum

#plot(
  xmin: 0, xmax: 3, ymin: 0, ymax: 5,
  riemann-sum(
    x => calc.pow(x, 2),
    domain: (0.0, 3.0),
    n: 6,
    method: "left",
    color: blue.lighten(75%),
    show-points: true,       // dots at evaluation points
    show-dx: true,           // Δx bracket under one rectangle
    show-xi: true,           // x₀, x₁, …, x₆ labels along axis
  ),
  (fn: x => calc.pow(x, 2), stroke: blue + 1.5pt),
)

riemann-sum Parameters

Parameter	Type	Default	Description
fn	function	—	Function to integrate (positional or fn:)
domain	array	plot range	(a, b)
n	int	4	Number of rectangles
method	str	"right"	"left", "right", "mid", "lower", "upper"
baseline	float	0	Y-level of rectangle bases
color	color	luma(220)	Rectangle fill
stroke	stroke	luma(80) + 0.6pt	Rectangle border
hatch	str/dict/none	none	Hatch pattern: "ne", "nw", "h", "v", "cross", "grid" — or (style: "ne", spacing: 5pt, stroke: red + 1pt)
hatch-spacing	length	5pt	Spacing between hatch lines
hatch-stroke	stroke	luma(80) + 0.5pt	Stroke for hatch lines
samples	int	20	Samples per subinterval for "lower"/"upper"
show-points	bool	false	Draw dot at each evaluation point
point-color	color	rgb("#c94a00")	Dot fill color
point-size	float	0.07	Dot radius in cm
point-label	content/auto/none	none	Label with arrows to the nearest dots; auto = method name
point-label-pos	array/auto	auto	(x, y) in data coords; auto = upper-right of dots
show-dx	bool	false	Draw Δx dimension bracket under one rectangle
dx-rect	int/auto	auto	Rectangle index to annotate (0-based); auto = middle
dx-label	content	$Delta x$	Bracket label
show-xi	bool	false	Draw $x_0, x_1, \ldots, x_n$ at subdivision points
xi-labels	array/auto	auto	Custom labels array; auto = subscripted $x_i$
xi-show-values	bool	false	Show numeric x-values instead of $x_i$ notation

Methods:

• "left" / "right" / "mid" — evaluation at left endpoint, right endpoint, or midpoint
• "lower" / "upper" — true infimum/supremum (sampled within each subinterval); works for any function shape including U-curves

Volume of Revolution

#import "@preview/simple-plot:1.0.0": volume-of-revolution

#volume-of-revolution(
  x => calc.sqrt(x),
  domain: (0.0, 4.0),
  n-disks: 5,
  width: 8.0,
  height: 4.0,
  show-y-axis: true,
  label-a: $0$,
  label-b: $4$,
  label-f: $f(x)=sqrt(x)$,
)

solid-of-revolution is an alias for backward compatibility.

volume-of-revolution Parameters

Parameter	Type	Default	Description
fn	function	—	Profile function $y = f(x) > 0$
domain	array	(0, 4)	(a, b) — interval of revolution
n-disks	int	4	Intermediate disk cross-sections to show
width, height	length/float	5, 3.5	Canvas size — a length or a number in cm
samples	int	60	Profile sampling points
axis-y	float	0	Y-value of revolution axis (default: x-axis)
axis-slope	float	0	Slope $m$ of revolution axis: $y = mx + \text{axis_y}$
show-axis	bool	true	Draw the revolution axis arrow
show-y-axis	bool	false	Draw a coordinate y-axis (show-yaxis is a deprecated alias)
y-axis-x	auto/float	auto	X position for the y-axis; auto = left of volume
y-axis-offset	float	0.45	Gap between the y-axis and the volume when y-axis-x: auto
y-axis-extend	array	(0.35, 0.45)	Y-axis padding (below, above) the volume
show-radius-marker	bool	false	Draw a vertical radius dimension marker at radius-marker-x
radius-marker-x	auto/float	auto	X position of the radius marker; auto = left cap (yaxis-x is a deprecated alias)
show-back	bool	true	Draw the back face and bottom profile
show-labels	bool	true	Show $a$, $b$, $f$ labels
profile-stroke	stroke	blue + 1.5pt	Top profile curve
disk-color	color	luma(218)	Solid body fill
disk-stroke	stroke	luma(90) + 0.6pt	Disk edge stroke
axis-stroke	stroke	black + 0.7pt	Revolution axis stroke
label-a, label-b	content	$a$, $b$	Domain endpoint labels
label-f	content	$f$	Function label
label-y	content	$y$	Y-axis label

Marker Types

Type	Description	Type	Description
"o"	Hollow circle	"*"	Filled circle
"square"	Hollow square	"square*"	Filled square
"triangle"	Hollow triangle	"triangle*"	Filled triangle
"diamond"	Hollow diamond	"diamond*"	Filled diamond
"star"	Hollow star	"star*"	Filled star
"+"	Plus sign	"x"	Cross
`"	"`	Vertical bar	"-"
"none"	No marker

Custom Styling

#plot(
  style: (
    background: (
      fill: rgb("#202124"),
    ),
    axis: (
      stroke: white + 1pt,
      arrow: (symbol: "stealth", fill: white, scale: 0.55),
    ),
    grid: (
      major: (stroke: luma(120) + 0.5pt),
      minor: (stroke: luma(80) + 0.3pt),
    ),
    ticks: (
      length: 0.1,
      stroke: white + 0.6pt,
      label-offset: 0.15,
      label-size: 10pt,
      label-fill: white,
    ),
    labels: (
      fill: white,
    ),
  ),
  // ...
)

Setting Global Defaults

#import "@preview/simple-plot:1.0.0": set-plot-defaults, reset-plot-defaults

#set-plot-defaults(width: 6, height: 4, show-grid: "major")

// All subsequent plots use these defaults
#plot(xmin: -2, xmax: 2, ymin: 0, ymax: 4,
  (fn: x => calc.pow(x, 2)))

#reset-plot-defaults()

Comparison with Other Plotting Libraries

simple-plot is designed for mathematical function plotting with a focus on simplicity and ease of use. Choose simple-plot when you need to:

• Plot mathematical functions quickly with minimal boilerplate code
• Create publication-quality plots for math, physics, or engineering documents
• Use a familiar API similar to pgfplots/matplotlib for straightforward plotting tasks

Alternatives:

• cetz-plot: Better for business charts and general data visualization (pie, bar, pyramid charts).
• lilaq: More powerful for complex scientific visualizations (colormesh, contour, quiver) but steeper learning curve.

Dependencies

• CeTZ (v0.5.2+)

License

MIT License — see LICENSE file for details.

Changelog

[1.0.0] - 2026-07-06

First stable release. The API documented in the manual is now considered stable.

Added

• width / height accept lengths — plot, zoom, volume-of-revolution (and the wrappers) now take real lengths (width: 6cm, height: 30mm) in addition to plain numbers, which keep their historical meaning of cm
• Named fn: in series helpers — fill-area, riemann-sum, func-plot accept fn: (and area-between accepts fn1: / fn2:) in addition to the positional function, matching the (fn: ..., ...) series dictionaries
• axis-x-pos: none / axis-y-pos: none hide an axis — the axis line, arrow, ticks and labels are skipped entirely (used by limit-schema, which previously drew an unintended y-axis)
• Unknown named arguments to plot() now raise an error — typos like xtick-lables: were previously silently ignored
• Unified hatch argument — hatch also accepts a dict (style: "ne", spacing: 10pt, stroke: red + 1pt) in fill-area, area-between, riemann-sum and fill-closed; the flat hatch-spacing / hatch-stroke arguments keep working as fallbacks
• volume-of-revolution cleanup — radius-marker-x is the new canonical name for the radius-marker position (yaxis-x and show-yaxis remain accepted as deprecated aliases); unknown named arguments now raise an error
• set-plot-defaults validates option names — a typo like set-plot-defaults(widht: 10) now raises an error instead of being silently stored and ignored
• Zoom insets re-render every series type — fill-area, area-between, fill-closed, riemann-sum rectangles, vline/hline and parametric curves now appear inside zoom() insets (previously only function curves and point series did), correctly clipped to both the rectangular and the circular lens

Fixed

• Riemann rectangles cut by the plot window no longer draw false edges — a bar extending past xmax (e.g. decimal xmax: 2.5 with domain: (0, 3)) or above ymax was clamped and then stroked on all four sides, showing a wrong width and a flat top at the window boundary; clipped edges are now left open so the bar reads as continuing beyond the window, and bars fully outside are dropped
• show-xi labels no longer collide with numeric tick labels — every tick label near an x_i label (measured in cm, not only exact position matches) is hidden, and x_0 takes the origin's 0 spot instead of being shifted into x_1
• show-dx + show-xi keep all labels — the Δx bracket now drops below the x_i row (dimension-line style) instead of silently skipping the two straddling x_i labels
• show-points no longer sprays a label by default — point-label defaults to none (dots only); when a label is requested, arrows point to the 3 nearest dots instead of criss-crossing the plot
• Label backgrounds no longer punch white holes into area fills — tick labels and axis-name labels suppress their white background when they sit on a Riemann bar or an area fill (the digits print directly on the fill)
• compiler requirement corrected to 0.13.0 — the hatch patterns use tiling(), which does not exist before Typst 0.13; the manifest previously claimed 0.11.0
• Raw (annotation: ...) dicts default to 9pt — aligned with the note() helper, which already used 9pt
• Axis arrow extensions are no longer scale-dependent — axis-x-extend / axis-y-extend default to absolute lengths (0.3cm), so a small data range (e.g. y from 0 to 0.5) no longer produces a huge axis overshoot; lengths are accepted for explicit values, bare numbers keep the legacy data-unit meaning
• Thick hatch strokes no longer show holes — hatch lines are extended past the tile boundary and repeated at the opposite corners, so hatch-stroke thicknesses comparable to hatch-spacing tile seamlessly
• plot-fn now forwards samples to the drawn curve (it was only used for the auto y-range)
• zoom(box-fill: none) now really makes the inset background transparent (the value was previously dropped and fell back to white)

[0.9.1] - 2026-07-03

Added

• Automatic function-label placement — labels now find a clear spot along the curve automatically, avoiding overlaps with other curves, tick labels, axes, and previously placed labels; label-anchor/label-side override when explicit placement is needed
• min-tick-spacing — auto-widens tick step to the next "nice" value (1, 2, 5, 10…) when the axis range would crowd labels below the threshold; keeps large-range plots legible without manual xtick-step
• hide-crossed-tick-labels — hides individual tick labels that a plotted curve crosses, so digits stay readable even when curves pass through the label band
• White label backgrounds — tick labels and axis-name labels are drawn over a white background so curves behind them don't bleed through

Fixed

• ylabel-offset default corrected: was (-0.08, -0.05), now (0.08, -0.05) — the $y$ axis label was shifted left instead of right
• Area specs are now clipped to the plot rectangle — fill-area, area-between, fill-closed and riemann-sum rectangles no longer overflow the axes area when the function or the given domain exceeds the axis range; they are clipped exactly like curves
• Riemann annotations flip for negative functions — the Δx bracket and x_i labels move above the baseline when the rectangles extend below it, instead of printing through the fill
• x_i labels no longer collide with x tick labels — tick labels under show-xi/show-dx annotations near the baseline are hidden automatically
• show-points dots are clipped — evaluation dots (and their label arrows) outside the plot area are dropped
• Circular zoom lens is a true circle — the spy glass and its inset are drawn as circles with uniform canvas-space magnification (shapes are preserved); previously both were ellipses derived from the region's bounding box
• Zoom connector lines follow external tangents — for circular lenses the dashed connectors touch both circle borders exactly and never cross the shapes; the inset size is capped at 80% of the plot and auto placement keeps it on canvas
• Guard against division by zero in volume-of-revolution for degenerate domains

[0.9.0] - 2026-06-15

Added

• Complete parameter reference for all public functions — scatter, data, line-plot, func-plot, plot-fn, parametric, and series now have full parameter tables in the manual
• New manual sections — dedicated sections for fill-area, area-between, fill-closed, note, vline, hline, and parametric plots
• origin-* parameters — origin-x, origin-y, origin-label, origin-size documented in axis configuration table
• Discontinuity handling — added note on returning none from plot functions to create gaps

Fixed

• Wrong defaults corrected in axis configuration table (xlabel-anchor, ylabel-anchor, offsets)
• Removed non-existent marker aliases (s, ^, d) from marker reference table
• Incorrect label-pos description and removed fake label-at field from function spec table
• Minor grid added to Grid Modes gallery preview

[0.8.0] - 2026-05-21

Added

• riemann-sum: complete feature documentation — full API table with all 23 parameters: method ("left", "right", "mid", "lower", "upper"), hatch controls (hatch, hatch-spacing, hatch-stroke), annotation flags (show-points, point-color, point-size, point-label, point-label-pos, show-dx, dx-rect, dx-label, show-xi, xi-labels, xi-show-values), and samples
• volume-of-revolution: complete feature documentation — full API table with all parameters including axis-y, axis-slope, show-y-axis, yaxis-x, y-axis-offset, y-axis-extend, show-radius-marker, show-back, show-labels, label params; solid-of-revolution alias documented
• Gallery: riemann-features.typ — 8-demo showcase of all Riemann sum features side by side

[0.7.0] - 2026-05-21

Fixed

• Riemann sum xi-label x-shift on y-axis increased from 0.18 to 0.35 to prevent overlap with axis line

[0.6.0] - 2026-05-21

Added

• volume-of-revolution — renamed from solid-of-revolution (alias kept); supports arbitrary revolution axis via axis-y and axis-slope; new show-yaxis, show-back, label-y parameters; ellipses rendered via polygon points for smoother output
• Riemann sum: "lower"/"upper" methods — true infimum/supremum by sampling within each subinterval; works for U-curves and any shape
• Riemann sum: endpoint dots — show-points, point-color, point-size, point-label, point-label-pos; draws dots at evaluation points with a text label and stealth arrows
• Riemann sum: Δx bracket — show-dx, dx-rect, dx-label; dimension bracket with tick marks under a chosen rectangle
• Riemann sum: subdivision labels — show-xi, xi-labels; draws $x_0, x_1, \ldots, x_n$ at subdivision points
• Default axis labels — xlabel and ylabel now default to $x$ and $y$ (tkz-fct style)
• Axis label placement — new defaults: x below-right of arrowhead ("north-west" anchor), y to the left ("east" anchor); matches standard math textbook style

Fixed

• Axis arrow style changed from bare "stealth" string (inherited large global scale) to explicit (symbol: "stealth", fill: black, scale: 0.55) — arrows are now elegantly sized
• Global mark scale removed from canvas set-style to avoid oversizing user-defined marks

[0.3.0] - 2026-02-18

Changed

• Grid label break: gap-based grid drawing replaces white-box overlay; works on any background color

Fixed

• Origin label no longer duplicates when show-origin: true and axes cross at origin

[0.2.6] - 2026-02-04

Added

• Grid label breaks, integer tick defaults, xtick-label-step/ytick-label-step, unit-label-only, axis arrows extending beyond grid

[0.2.5] - 2026-01-27

Fixed

• label-pos now respects explicit function domains

[0.2.0] - 2026-01-15

Added

• axis-x-extend, axis-y-extend, show-origin, label-side, Liang-Barsky clipping

[0.1.0] - 2026-01-13

Added

• Initial release: function plotting, scatter/line plots, 14 marker types, customizable axes, grid, ticks, labels, global defaults