Hello
Le 2024-12-12 à 01 h 43, Will Cohen via PROJ a écrit :
I am very pleased to announce clj-proj
(https://github.com/willcohen/clj-proj/), a project which provides a
native (or transpiled) version of PROJ for both the JVM and JS ecosystems.
The goal of this project is to provide a long-missing component of
geospatial analysis for these platforms: a performant version of PROJ
that can closely follow upstream development. This should dramatically
improve the suitability of the JVM and JS ecosystems for advanced
open-source geospatial uses.
This is a great effort and this project will surely meet some users. It
may also replace PROJ-JNI <https://github.com/OSGeo/PROJ-JNI>. But just
for avoiding to give an inexact impression to the readers, this project
indeed fills a hole on the JS side (as far as I know), but not really on
the JVM side where alternatives comparable to PROJ exist for 20 years,
in particular GeoTools (the oldest) and Apache SIS. They have their
advantages and inconvenient. For example, PROJ supports more projection
methods but Apache SIS has more extensive support of any-dimensional
transforms. PROJ is more up-to-date on WKT 2 but Apache SIS has better
GML support. All those projects can use an embedded EPSG database
(GeoTools was 10 years in advance over PROJ in that aspect). So there is
of course reasons why some peoples will want to use PROJ on the JVM, but
it is inexact to say that they couldn't do advanced open-source
geospatial on that platform.
Regards,
Martin
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