Box plot

Skill shuakami/paperchart/skills/box-plot

Quiet, editorial chart PNGs for technical blog posts. 15 primitives, six themes, one CLI.

Install

npx -y skills add shuakami/paperchart --skill box-plot

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

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What its author says it does

Copied from the file, not written here

Render a horizontal box-and-whisker plot for 2-8 rows. Each row shows min / q1 / median / q3 / max plus optional outlier dots. Supports linear or log x-axis. Use for latency-distribution comparisons across services, model-inference time distributions, or any five-number-summary side-by-side.

The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

1.7 KB, as published. Nobody here has run it

paperchart — box plot

Rows stack vertically. Each row is the five-number summary (min, q1, median, q3, max) drawn as a horizontal box with whiskers; outliers are small open circles beyond the whiskers. One row can carry accent: true and is drawn in the accent colour.

When to use

Latency distribution comparison (p50 / p75 / p99 / max per build).
Error-rate distribution across regions / services.
Pre- / post-optimization latency deltas.

Input shape

{
  "data": {
    "axis": { "scale": "log", "label": "ms" },
    "rows": [
      {
        "label": "legacy runtime", "caption": "fuzzy scorer",
        "min": 3.2, "q1": 9.4, "median": 14.6, "q3": 23.1, "max": 62.0,
        "outliers": [82, 95, 120]
      },
      {
        "label": "externalized pack", "caption": "brotli-11, accent",
        "min": 0.32, "q1": 0.45, "median": 0.61, "q3": 0.87, "max": 1.9,
        "outliers": [3.1, 4.2],
        "accent": true
      }
    ]
  }
}

Visual rules

Log or linear x-axis. Tick labels on the bottom only.
Median drawn as a thicker inner line inside the box.
Right gutter shows median and p75 in tabular numerals.

CLI

paperchart box-plot -i data.json -o box-plot.png
paperchart box-plot --defaults -o box-plot.png