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| author | Kristian Evers <kristianevers@gmail.com> | 2020-01-21 20:24:52 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-01-21 20:24:52 +0100 |
| commit | 709717899c3d7ebd6c21b0d7d0a697acc505b61b (patch) | |
| tree | a2056443dc96bdc2df7349ff3e0ae3d0e9d85dc2 /docs | |
| parent | 1f649f8a991a7a3abd1a93499a2b8747a8d5074d (diff) | |
| parent | b13a34f3e0332d23acc9393df827d57c8386da41 (diff) | |
| download | PROJ-709717899c3d7ebd6c21b0d7d0a697acc505b61b.tar.gz PROJ-709717899c3d7ebd6c21b0d7d0a697acc505b61b.zip | |
Merge pull request #1862 from kbevers/update-faq
Add explanation of the PROJ.4 -> PROJ shift to FAQ
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/source/faq.rst | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/docs/source/faq.rst b/docs/source/faq.rst index 88ca5b5b..d3cdb50f 100644 --- a/docs/source/faq.rst +++ b/docs/source/faq.rst @@ -172,3 +172,22 @@ paths. In most cases, the following paths are checked in order: Note that if you're using conda, activating an environment sets :envvar:`PROJ_LIB` to a resource directory located in that environment. + +What happend to PROJ.4? +-------------------------------------------------------------------------------- + +The first incarnation of PROJ saw the light of day in 1983. Back then it +was simply known as PROJ. Eventually a new version was released, known +as PROJ.2 in order to distinguish between the two versions. Later on both +PROJ.3 and PROJ.4 was released. By the time PROJ.4 was released the +software had matured enough that a new major version release wasn't an +immediate necesity. PROJ.4 was around for more than 25 years before it +again became time for an update. This left the project in a bit of a +conundrum regarding the name. For the majority of the life-time of the product it was known as PROJ.4, but with the release of version 5 the name +was no longer aligned with the version number. As a consequence, it was +decided to decouple the name from the version number and once again simply +call the software PROJ. + +Use of name PROJ.4 is now strictly reserved for describing legacy behaviour +of the software, e.g. "PROJ.4 strings" as seen in :program:`projinfo` +output. |