Shapely Compute

parcadei/continuous-claude-v3/.claude/skills/shapely-compute

作者 parcadeid07ff4b06b62无许可证3.9K 个星标收录于 2026年10月8日更新于 2026年10月8日仓库8个月前更新

Computational geometry with Shapely - create geometries, boolean operations, measurements, predicates

仅含说明Data & Analytics
AI 生成的概览

使用 Shapely 进行计算几何：创建几何图形、执行布尔运算、测试空间谓词并测量几何对象。

功能
该技能记录了使用 Shapely 进行计算几何的命令行工作流程。内容包括从坐标字符串或 WKT 创建点、线、多边形及多几何对象，执行交集、并集、差集、缓冲区、凸包和简化等布尔运算，测试包含、相交、位于内部等空间谓词，以及计算面积、长度、距离、质心和边界等测量值。它还支持仿射变换、有效性检查与修复、坐标提取和 WKT 解析，结果以 JSON 返回。
适用场景
当任务涉及几何图形、空间关系或坐标计算时使用，例如碰撞检测、点在多边形内判断、面积或距离计算、缓冲区以及图形合并与相减。适用于可用 WKT 或坐标列表表达的几何问题。
运行要求
需要 Shapely Python 包以及带 uv 的 Python 运行环境来运行所引用的脚本；该技能本身仅包含说明，未附带脚本或资源文件。

Computational Geometry with Shapely

When to Use

  • Creating geometric shapes (points, lines, polygons)
  • Boolean operations (intersection, union, difference)
  • Spatial predicates (contains, intersects, within)
  • Measurements (area, length, distance, centroid)
  • Geometry transformations (translate, rotate, scale)
  • Validating and fixing invalid geometries

Quick Reference

I want to...CommandExample
Create geometrycreatecreate polygon --coords "0,0 1,0 1,1 0,1"
Intersectionop intersectionop intersection --g1 "POLYGON(...)" --g2 "POLYGON(...)"
Check containspred containspred contains --g1 "POLYGON(...)" --g2 "POINT(0.5 0.5)"
Calculate areameasure areameasure area --geom "POLYGON(...)"
Distancedistancedistance --g1 "POINT(0 0)" --g2 "POINT(3 4)"
Transformtransform translatetransform translate --geom "..." --params "1,2"
Validatevalidatevalidate --geom "POLYGON(...)"

Commands

create

Create geometric objects from coordinates.

bash
# Pointuv run python scripts/shapely_compute.py create point --coords "1,2"
# Line (2+ points)uv run python scripts/shapely_compute.py create line --coords "0,0 1,1 2,0"
# Polygon (3+ points, auto-closes)uv run python scripts/shapely_compute.py create polygon --coords "0,0 1,0 1,1 0,1"
# Polygon with holeuv run python scripts/shapely_compute.py create polygon --coords "0,0 10,0 10,10 0,10" --holes "2,2 8,2 8,8 2,8"
# MultiPointuv run python scripts/shapely_compute.py create multipoint --coords "0,0 1,1 2,2"
# MultiLineString (pipe-separated lines)uv run python scripts/shapely_compute.py create multilinestring --coords "0,0 1,1|2,2 3,3"
# MultiPolygon (pipe-separated polygons)uv run python scripts/shapely_compute.py create multipolygon --coords "0,0 1,0 1,1 0,1|2,2 3,2 3,3 2,3"

op (operations)

Boolean geometry operations.

bash
# Intersection of two polygonsuv run python scripts/shapely_compute.py op intersection \    --g1 "POLYGON((0 0,2 0,2 2,0 2,0 0))" \    --g2 "POLYGON((1 1,3 1,3 3,1 3,1 1))"
# Unionuv run python scripts/shapely_compute.py op union --g1 "POLYGON(...)" --g2 "POLYGON(...)"
# Difference (g1 - g2)uv run python scripts/shapely_compute.py op difference --g1 "POLYGON(...)" --g2 "POLYGON(...)"
# Symmetric difference (XOR)uv run python scripts/shapely_compute.py op symmetric_difference --g1 "..." --g2 "..."
# Buffer (expand/erode)uv run python scripts/shapely_compute.py op buffer --g1 "POINT(0 0)" --g2 "1.5"
# Convex hulluv run python scripts/shapely_compute.py op convex_hull --g1 "MULTIPOINT((0 0),(1 1),(0 2),(2 0))"
# Envelope (bounding box)uv run python scripts/shapely_compute.py op envelope --g1 "POLYGON(...)"
# Simplify (reduce points)uv run python scripts/shapely_compute.py op simplify --g1 "LINESTRING(...)" --g2 "0.5"

pred (predicates)

Spatial relationship tests (returns boolean).

bash
# Does polygon contain point?uv run python scripts/shapely_compute.py pred contains \    --g1 "POLYGON((0 0,2 0,2 2,0 2,0 0))" \    --g2 "POINT(1 1)"
# Do geometries intersect?uv run python scripts/shapely_compute.py pred intersects --g1 "..." --g2 "..."
# Is g1 within g2?uv run python scripts/shapely_compute.py pred within --g1 "POINT(1 1)" --g2 "POLYGON(...)"
# Do geometries touch (share boundary)?uv run python scripts/shapely_compute.py pred touches --g1 "..." --g2 "..."
# Do geometries cross?uv run python scripts/shapely_compute.py pred crosses --g1 "LINESTRING(...)" --g2 "LINESTRING(...)"
# Are geometries disjoint (no intersection)?uv run python scripts/shapely_compute.py pred disjoint --g1 "..." --g2 "..."
# Do geometries overlap?uv run python scripts/shapely_compute.py pred overlaps --g1 "..." --g2 "..."
# Are geometries equal?uv run python scripts/shapely_compute.py pred equals --g1 "..." --g2 "..."
# Does g1 cover g2?uv run python scripts/shapely_compute.py pred covers --g1 "..." --g2 "..."
# Is g1 covered by g2?uv run python scripts/shapely_compute.py pred covered_by --g1 "..." --g2 "..."

measure

Geometric measurements.

bash
# Area (polygons)uv run python scripts/shapely_compute.py measure area --geom "POLYGON((0 0,1 0,1 1,0 1,0 0))"
# Length (lines, polygon perimeter)uv run python scripts/shapely_compute.py measure length --geom "LINESTRING(0 0,3 4)"
# Centroiduv run python scripts/shapely_compute.py measure centroid --geom "POLYGON((0 0,2 0,2 2,0 2,0 0))"
# Bounds (minx, miny, maxx, maxy)uv run python scripts/shapely_compute.py measure bounds --geom "POLYGON(...)"
# Exterior ring (polygon only)uv run python scripts/shapely_compute.py measure exterior_ring --geom "POLYGON(...)"
# All measurements at onceuv run python scripts/shapely_compute.py measure all --geom "POLYGON((0 0,2 0,2 2,0 2,0 0))"

distance

Distance between geometries.

bash
uv run python scripts/shapely_compute.py distance --g1 "POINT(0 0)" --g2 "POINT(3 4)"# Returns: {"distance": 5.0, "g1_type": "Point", "g2_type": "Point"}

transform

Affine transformations.

bash
# Translate (move)uv run python scripts/shapely_compute.py transform translate \    --geom "POLYGON((0 0,1 0,1 1,0 1,0 0))" --params "5,10"# params: dx,dy or dx,dy,dz
# Rotate (degrees, around centroid by default)uv run python scripts/shapely_compute.py transform rotate \    --geom "POLYGON((0 0,1 0,1 1,0 1,0 0))" --params "45"# params: angle or angle,origin_x,origin_y
# Scale (from centroid by default)uv run python scripts/shapely_compute.py transform scale \    --geom "POLYGON((0 0,1 0,1 1,0 1,0 0))" --params "2,2"# params: sx,sy or sx,sy,origin_x,origin_y
# Skewuv run python scripts/shapely_compute.py transform skew \    --geom "POLYGON(...)" --params "15,0"# params: xs,ys (degrees)

validate / makevalid

Check and fix geometry validity.

bash
# Check if validuv run python scripts/shapely_compute.py validate --geom "POLYGON((0 0,1 0,1 1,0 1,0 0))"# Returns: {"is_valid": true, "type": "Polygon", ...}
# Fix invalid geometry (self-intersecting, etc.)uv run python scripts/shapely_compute.py makevalid --geom "POLYGON((0 0,2 2,2 0,0 2,0 0))"

coords

Extract coordinates from geometry.

bash
uv run python scripts/shapely_compute.py coords --geom "POLYGON((0 0,1 0,1 1,0 1,0 0))"# Returns: {"coords": [[0,0],[1,0],[1,1],[0,1],[0,0]], "type": "Polygon"}

fromwkt

Parse WKT and get geometry information.

bash
uv run python scripts/shapely_compute.py fromwkt "POLYGON((0 0,1 0,1 1,0 1,0 0))"# Returns: {"type": "Polygon", "bounds": [...], "area": 1.0, ...}

Geometry Types

  • point - Single coordinate (x, y) or (x, y, z)
  • line/linestring - Sequence of connected points
  • polygon - Closed shape with optional holes
  • multipoint, multilinestring, multipolygon - Collections

Input Formats

  • Coordinates string: "0,0 1,0 1,1 0,1" (space-separated x,y pairs)
  • WKT: "POLYGON((0 0, 1 0, 1 1, 0 1, 0 0))"

Output Format

All commands return JSON with:

  • wkt: WKT representation of result geometry
  • type: Geometry type (Point, LineString, Polygon, etc.)
  • bounds: (minx, miny, maxx, maxy)
  • is_valid, is_empty: Validity flags
  • Measurement-specific fields (area, length, distance, etc.)

Common Use Cases

Use CaseCommand
Collision detectionpred intersects
Point-in-polygonpred contains
Area calculationmeasure area
Buffer zonesop buffer
Shape combinationop union
Shape subtractionop difference
Bounding boxop envelope or measure bounds
Simplify pathop simplify

Related Skills

  • /math-mode - Full math orchestration (SymPy, Z3)
  • /math-plot - Visualization with matplotlib

来源与署名

来源：parcadei/continuous-claude-v3位于.claude/skills/shapely-compute提交d07ff4b

许可证： 无许可证

内容归原作者所有。SourceWeft 从公开仓库中收录这些内容。

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