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SKILL_JS5_ARCGIS / arcgis-geometry-operations

AGENTS.md1 starsChanged 6 months agoMITView on GitHub

Quick-reference for client-side geometry in SDK 5.1. Read before spatial math.

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AGENTS.md

Agent Guide: arcgis-geometry-operations

Quick-reference for client-side geometry in SDK 5.1. Read before spatial math.

Quick Decision Tree

  1. Lon/lat + meters? → geodesicBufferOperator / geodetic*Operator, after await op.load().
  2. Projected, small area? → planar bufferOperator, areaOperator, lengthOperator.
  3. Relationship? → containsOperator, withinOperator, intersectsOperator, ...
  4. geometryEngine in the code? → replace it (deprecated since 4.32; table in api-detail.md).

Setup Checklist

  • Import operators as namespaces (import * as bufferOperator).
  • await op.load() before any geodesic/geodetic operator.
  • Both inputs in the same spatial reference (otherwise null).
  • simplifyOperator before measuring self-intersecting rings.
  • Heavy batches in a worker: executeMany is synchronous too.

Anti-patterns (one-liner reminders)

  • ❌ bufferOperator on lon/lat with meters: throws.
  • ❌ Geodetic operator without load(): "m is not a function".
  • ❌ geometryEngine.* in new code.
  • ❌ Area of an unsimplified bowtie: 0.

Files in This Skill

  • SKILL.md / SKILL.es.md: full guides
  • references/api-detail.md: operators, load() list, geometryEngine migration
  • references/examples.md: buffer / relate / measure
  • references/pitfalls.md: extended troubleshooting
  • scripts/snippet-operators.ts, snippet-engine.ts (geometryEngine code rewritten with operators)

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