scale-size-binned
Binned continuous size scale mapping a numeric column to n-breaks sizes.
Quantises the trained domain into equal-width bins so that all rows in a bin take the same visual size, drawn from the midpoint position of the range interval.
Usage
scale-size-binned(
n-breaks: 4,
breaks: auto,
range: (1pt, 6pt),
name: none,
limits: none,
oob: "drop",
labels: auto,
)Parameters
| Parameter | Default | Description |
|---|---|---|
n-breaks |
4 |
Number of bins to partition the domain into. Ignored when breaks is set. |
breaks |
auto |
Array of bin edges for the legend, or auto to derive equal-width bins from n-breaks. Affects the legend only; the per-row mapping stays continuous. |
range |
(1pt, 6pt) |
Pair of Typst lengths (min, max) bounding the output size. |
name |
none |
Legend title. Overrides any name set via labels when both are present. |
limits |
none |
Pair (lo, hi) clipping the trained domain, or none. |
oob |
"drop" |
Out-of-range policy: "drop" (default) removes rows whose value falls outside limits; "squish" clamps continuous values to the nearest endpoint. |
labels |
auto |
Array of legend labels aligned with the bins, or auto. |
Returns
Scale object consumed by plot.
Examples
Four-bin discretisation across the default size range.
#let d = range(0, 12).map(i => (x: i, y: i, w: i + 1))
#plot(
data: d,
mapping: aes(x: "x", y: "y", size: "w"),
layers: (geom-point(),),
scales: (scale-size-binned(n-breaks: 4, range: (1pt, 6pt)),),
width: 10cm,
height: 6cm,
)
More bins (n-breaks: 8) on a wider range give finer steps while keeping the visual binning.
#let d = range(0, 12).map(i => (x: i, y: i, w: i + 1))
#plot(
data: d,
mapping: aes(x: "x", y: "y", size: "w"),
layers: (geom-point(),),
scales: (scale-size-binned(n-breaks: 8, range: (1pt, 12pt)),),
width: 10cm,
height: 6cm,
)
