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Snyder1992
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Previous version was describing oea by mistake. It is also a projection
by Snyder and the isea docs was based on the paper on the oea
projection. This commit fixes that.
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- Use names as published
- Change Tobler2017 -> Tobler2018
- Change EPSGGuidanceNumber7Part2 -> IOGP2018
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- Corrections to BibTeX references, normalise format with JabRef
- Typos in projinfo
- Simplify update CITATION step
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Remove documents that are published externally, and re-do ps2pdf
conversion for unpublished documents to reduce their file size
and allow text access. Also add README.md and update references.bib
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Add Tobler-Mercator projection
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The Geographic offsets transformation adds an offset to the geographic longitude,
latitude coordinates, and an offset to the ellipsoidal height.
This method is normally only used when low accuracy is tolerated. It is documented
as coordinate operation method code 9619 (for geographic 2D) and 9660 (for
geographic 3D) in the EPSG dataset.
It can also be used to implement the method Geographic2D with Height Offsets
(code 9618) by noting that the input vertical component is a gravity-related
height and the output vertical component is the ellispoid height (dh being
the geoid undulation).
It can also be used to implement the method Vertical offset (code 9616)
It is used for example to transform:
- from the old Greek geographic 2D CRS to the newer GGRS87 CRS
- from Tokyo + JSLD69 height to WGS 84
- from Baltic 1977 height to Black Sea height
It is also useful to document the implicit zero-offset transformation
we do in pipelines such as
+proj=pipeline +step +inv +proj=longlat +ellps=A
+step +proj=longlat +ellps=B
that can be explicited as
+proj=pipeline +step +inv +proj=longlat +ellps=A
+step +proj=geogoffset [+dlon=0 +dlat=0 +dh=0]
+step +proj=longlat +ellps=B
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Implement the Equal Earth projection (closes #1085)
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Modifies label to use BibTeX key name, and format names with lastfirst
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