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Discuss PROJ.4 Cartographic Projections library originally written by Gerald Evenden then of the USGS.
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Thread (623 Threads) Rating Replies Last Message

GeoTiff <-> Proj.4 by support.mn
18
by Mikael Rittri-2

Grid Systems by iscollar
0
by iscollar

Geocentric Coordinates by Eran Burstain
2
by Eran Burstain

General Inverse Transformation by support.mn
0
by support.mn

Latest copy of manual up by Gerald I. Evenden-3
1
by Roger Oberholtzer

Some typos in the libproj4 manual by Mikael Rittri-2
5
by Clifford J Mugnier

Re: GeoTiff <-> Proj.4 by support.mn
2
by support.mn

Libproj4 manual opinion poll by Gerald I. Evenden-3
5
by Gerald I. Evenden-3

A bit slow mail server.... by support.mn
6
by support.mn

Some ideas about the general inverse method by support.mn
2
by support.mn

cs2cs output file by Rich Westfall
1
by Frank Warmerdam-2

Proj4 datum transform assumption Question by Joel_Cusick
1
by Frank Warmerdam-2

Non - earth projection by Klemen S.
2
by Klemen S.

Some ideas about the general inverse method by support.mn
0
by support.mn

Convergence by Kees Krikke-3
6
by Gerald I. Evenden-3

Poor example in general inverse procedure - Redux by Gerald I. Evenden-3
0
by Gerald I. Evenden-3

Poor example in general inverse procedure by Gerald I. Evenden-3
0
by Gerald I. Evenden-3

C++ code for exact Transverse Mercator Projection by Charles Karney
4
by Charles Karney

Some need for updated proj-4 manuals by support.mn
14
by Paul B. Anderson-4

SGS85 and WGS84 by Roger Oberholtzer
2
by Dean C.Mikkelsen

Unknown projection? by support.mn
12
by Mikael Rittri-2

Question for the math types by Gerald I. Evenden-3
1
by support.mn

Inverse Winkel Tripel and others by Gerald I. Evenden-3
1
by support.mn

Egypt Datum Transformation by iscollar
0
by iscollar

Egypt 7 parameter datum transformation again by iscollar
2
by Clifford J Mugnier

Re: Proj Digest, Vol 52, Issue 17 by Jay Hollingsworth
1
by Clifford J Mugnier

Scale factor for Transverse Mercator by Gerald I. Evenden-3
12
by Gerald I. Evenden-3

Relationship between transverse Mercator algorithms by iscollar
4
by Charles Karney

Large scale mapping & Google by iscollar
0
by iscollar

Perspective view to a sphere (or similar) by support.mn
2
by support.mn

Relationship betweeen transverse Mercator algorithms by Charles Karney
1
by Strebe

Transverse Mercator algorithm by Charles Karney
23
by Charles Karney

Michael P Finn of the USGS/ National Geospatial Technical Operations Center is out of the office. by Michael P Finn
0
by Michael P Finn

What is the meaning of the "Mercator 41" projection in EPSG:3752 ? by Mikael Rittri-2
3
by Mikael Rittri-2

Michigan georef projection reproject to lat-lon by Chris Fahner
6
by Chris Fahner
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