From b13a34f3e0332d23acc9393df827d57c8386da41 Mon Sep 17 00:00:00 2001 From: Kristian Evers Date: Tue, 21 Jan 2020 12:08:57 +0100 Subject: Add explanation of the PROJ.4 -> PROJ shift to FAQ closes #1511 --- docs/source/faq.rst | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'docs/source') 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. -- cgit v1.2.3