locationtech / locationtech/proj4j

1 degree == 1 metre according to units

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Dominant language
Java
Stars
232
Forks
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No merged PRs in 30d

Description

Because degrees have a value of 1, the following test passes

val degrees = Units.DEGREES
val metres = Units.METRES
val metresPerUnit = Units.convert(1.0, degrees, metres)
assertThat(metresPerUnit, `is`(1.0))

I expected that I could convert a number in metres into the unit of an arbitrary CRS with Units.convert. Instead, it appears from the source that I can only convert similar units, such as metric to metric or imperial to imperial.

Is this the indented behavior?

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Research direction

Start by reading the Units conversion implementation referenced in the issue and locate its existing tests. Reproduce the shown degrees-to-metres case, determine the intended behavior for conversions between arbitrary CRS units, and add or update tests that clearly establish the accepted result.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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