d3-force-bubble-chart SKILL.md skillA
d3-force-bubble-chart from cxcscmu/skilllearnbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cxcscmu/skilllearnbench/d3-force-bubble-chart@git:20260424.d50cf5aPins git:20260424.d50cf5a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cxcscmu/skilllearnbench
- Path
skills/b1-one-shot-claude-sonnet-4-6/stock-data-visualization/d3-force-bubble-chart/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260424.d50cf5a, committed Apr 24, 2026
- Size
- 4,072 bytes
- Repository stars
- 91
- License
- MIT
Build a force-simulation bubble chart in D3.js v6 where bubbles are sized by a numeric value, colored by category, and clustered by category using forceX/forceY. Covers deterministic layout, collision, and tick-based settling.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# D3 v6 Force Bubble Chart
## Overview
A force-simulated bubble chart positions nodes using D3's `forceSimulation`. Each bubble is a circle sized by a data value (e.g. market cap) and colored by a categorical variable (e.g. sector). Nodes in the same category are attracted to a common cluster center via `forceX`/`forceY`.
## Core Pattern
```javascript
// 1. Compute cluster centers per category
const categories = [...new Set(data.map(d => d.category))].sort();
const clusterCenters = {};
categories.forEach((cat, i) => {
const angle = (2 * Math.PI * i) / categories.length;
clusterCenters[cat] = {
x: width / 2 + clusterRadius * Math.cos(angle),
y: height / 2 + clusterRadius * Math.sin(angle)
};
});
// 2. Size scale (sqrt for area perception)
const rScale = d3.scaleSqrt()
.domain([0, d3.max(data, d => d.value)])
.range([MIN_R, MAX_R]);
// 3. Assign initial positions deterministically (sort by category then name)
const sorted = [...data].sort((a, b) =>
a.category.localeCompare(b.category) || a.name.localeCompare(b.name)
);
sorted.forEach((d, i) => {
const center = clusterCenters[d.category];
…Read the whole file at its exact version.
How to install
mdr add cxcscmu/skilllearnbench/d3-force-bubble-chart@sha256:c76940b8dbb4ae2bThe line at the top of this page pins the label git:20260424.d50cf5a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_r2mst4kiwyogvaqe)
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Versions
The registry has recorded 1 version of this file, committed on Apr 24, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4072 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
cxcscmu/skilllearnbench · 91 stars · license MIT · pushed 2026-10-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_r2mst4kiwyogvaqe GET https://markdownregistry.com/api/v1/resolve?ref=cxcscmu/skilllearnbench/d3-force-bubble-chart GET https://markdownregistry.com/api/v1/blob/c76940b8dbb4ae2b4cf7a05e5eef6e0614c1a085186afef1705983145d690e80
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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