locationtech / locationtech/proj4j

Provide best-in-class WKT -> Proj4 conversion routines

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#49 9 comments 0 reactions 0 assignees View on GitHub

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enhancement help wanted
Dominant language
Java
Stars
232
Forks
86
PR merge metrics
No merged PRs in 30d

Description

This may be a naive and ill-informed pipe dream, but it would be nice to have robust conversions from WKT{1|2} to Proj4 in cases where there's no embedded EPSG code. The current conversion routines assume there's an embedded EPSG code to use for Proj4 dictionary lookup. We recently ran into an issue where the WKT had no EPSG code, yet needed Proj4, and came up very short in finding anything out there for the JVM that can do it in a general or comprehensive way (would love to know if there is something!).

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First steps

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Research direction

The issue names no files, tests, or entry points. Start by reviewing the current WKT1/WKT2-to-Proj4 conversion routines and how they depend on embedded EPSG codes. Done would require a defined comprehensive conversion approach for WKT without an EPSG code.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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