geometry / geography: Read improvements

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Issue 类型
功能
描述清晰度
基本清楚
活跃度
活跃
技术栈
python
领域
data

调研方向

Start by tracing geometry/geography type handling, especially pyarrow_to_schema, metric evaluators, and CLI JSON output; the issue does not name specific files or tests. Compare the listed gaps with existing type handling and add fixture-based tests, since Spark types are unavailable. Done means the listed parsing, schema, edge-algorithm, bounds, and JSON cases are covered.

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描述

V3
Feature Request / Improvement

We've added rudimentary support for the geometry and geography types, but we've still got some work to do:

  • Parse the unquoted form, case-insensitively and with optional whitespace (this was a recent change to Java)
  • pyarrow_to_schema doesn't recognise geoarrow extension types or Parquet GEOMETRY/GEOGRAPHY, so these columns come back as plain binary
  • Only the spherical edge algorithm is mapped. vincenty/thomas/andoyer/karney fall back to planar:
  • Make sure the metrics evaluators don't read spec-encoded bounds (x, y[, z, m]) as WKB
  • CLI JSON output breaks on geo defaults:
  • Testing with fixtures (since no Spark types)
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从这里开始

  1. 先读完整个 Issue,再读项目的贡献指南。
  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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