<div dir="auto">Thank you Oscar</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El lun., 27 abr. 2020 21:01, <<a href="mailto:proj-request@lists.osgeo.org">proj-request@lists.osgeo.org</a>> escribió:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send PROJ mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. PROJ 7.0.1RC1 & 6.3.2RC1 (Kristian Evers)<br>
2. projection Gall-Bomford (Gall Modified) (David Gispert)<br>
3. Re: projection Gall-Bomford (Gall Modified) (Oscar van Vlijmen)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Mon, 27 Apr 2020 11:22:45 +0200<br>
From: Kristian Evers <<a href="mailto:kristianevers@gmail.com" target="_blank" rel="noreferrer">kristianevers@gmail.com</a>><br>
To: PROJ <<a href="mailto:proj@lists.osgeo.org" target="_blank" rel="noreferrer">proj@lists.osgeo.org</a>><br>
Subject: [PROJ] PROJ 7.0.1RC1 & 6.3.2RC1<br>
Message-ID: <<a href="mailto:E50977E3-EC8D-41B5-B7DA-2BCD4FCBA0AF@gmail.com" target="_blank" rel="noreferrer">E50977E3-EC8D-41B5-B7DA-2BCD4FCBA0AF@gmail.com</a>><br>
Content-Type: text/plain; charset=us-ascii<br>
<br>
All,<br>
<br>
With scheduled releases of PROJ 7.0.1 and 6.3.2. on May 1st it is time<br>
to put out release candidates. Both candidates includes a number of bug<br>
fixes since the previous release. 7.0.1 includes 39 bug fixes and 16 bugs<br>
has been fixed in 6.3.2. See the release notes below.<br>
<br>
Archives are available here: <br>
<br>
<a href="http://download.osgeo.org/proj/proj-7.0.1RC1.tar.gz" rel="noreferrer noreferrer" target="_blank">http://download.osgeo.org/proj/proj-7.0.1RC1.tar.gz</a><br>
<a href="http://download.osgeo.org/proj/proj-7.0.1RC1.zip" rel="noreferrer noreferrer" target="_blank">http://download.osgeo.org/proj/proj-7.0.1RC1.zip</a><br>
<a href="http://download.osgeo.org/proj/proj-6.3.2RC1.tar.gz" rel="noreferrer noreferrer" target="_blank">http://download.osgeo.org/proj/proj-6.3.2RC1.tar.gz</a><br>
<a href="http://download.osgeo.org/proj/proj-6.3.2RC1.zip" rel="noreferrer noreferrer" target="_blank">http://download.osgeo.org/proj/proj-6.3.2RC1.zip</a><br>
<br>
<br>
Please test the release candidates and report back any problems you<br>
may encounter. <br>
<br>
If no issues are found with the two release candidates the final releases<br>
will be announced on Friday May 1st.<br>
<br>
/Kristian<br>
<br>
<br>
<br>
7.0.1 Release Notes<br>
-------------------<br>
<br>
Updates<br>
-------<br>
<br>
o Database: update to EPSG v9.8.9 #2141<br>
<br>
Bug fixes<br>
---------<br>
<br>
o Make tests independent of proj-datumgrid (#1995)<br>
<br>
o Add missing projection property tables (#1996)<br>
<br>
o Avoid crash when running against SQLite3 binary built with<br>
-DSQLITE_OMIT_AUTOINIT (#1999)<br>
<br>
o createOperations(): fix wrong pipeline generation with CRS that has +nadgrids=<br>
and +pm= (#2002)<br>
<br>
o Fix bad copy&replace pattern on HEALPix and rHEALPix projection names (#2007)<br>
<br>
o createUnitOfMeasure(): use full double resolution for the conversion<br>
factor (#2014)<br>
<br>
o Update README with info on PROJ-data (#2015)<br>
<br>
o utm/ups: make sure to set errno to PJD_ERR_ELLIPSOID_USE_REQUIRED if<br>
es==0 (#2045)<br>
<br>
o data/Makefile.am: remove bashism (#2048)<br>
<br>
o ProjectedCRS::identify(): tune it to better work with ESRI WKT<br>
representation of EPSG:2193 (#2059)<br>
<br>
o Fix build with gcc 4.8.5 (#2066)<br>
<br>
o Autotools/pkg-conf: Define datarootdir (#2069)<br>
<br>
o cs2cs: don't require +to for '{source_crs} {target_crs} filename...'<br>
syntax (#2081)<br>
<br>
o CMake: fix bug with find_package(PROJ) with macOS (#2082)<br>
<br>
o ESRI WKT import / identification: special case for<br>
NAD_1983_HARN_StatePlane_Colorado_North_FIPS_0501 with Foot_US unit (#2088)<br>
<br>
o ESRI WKT import / identification: special case for<br>
NAD_1983_HARN_StatePlane_Colorado_North_FIPS_0501 with Foot_US unit (#2089)<br>
<br>
o EngineeringCRS: when exporting to WKT1_GDAL, output unit and axis (#2092)<br>
<br>
o Use jtsk03-jtsk horizontal grid from CDN (#2098)<br>
<br>
o CMake: prefer to use use PROJ_SOURCE_DIR and PROJ_BINARY_DIR (#2100)<br>
<br>
o Fix wrong grids file name in esri.sql (#2104)<br>
<br>
o Fix identification of projected CRS whose name is close but not strictly<br>
equal to a ESRI alias (#2106)<br>
<br>
o Fix working of Helmert transform between the horizontal part of<br>
2 compoundCRS (#2111)<br>
<br>
o Database: fix registration of custom entries of grid_transformation_custom.sql<br>
for geoid grids (#2114)<br>
<br>
o ESRI_WKT ingestion: make sure to identify to non-deprecated EPSG entry when<br>
possible (#2119)<br>
<br>
o Make sure that importing a Projected 3D CRS from WKT:2019 keeps the base<br>
geographic CRS as 3D (#2125)<br>
<br>
o createOperations(): improve results of compoundCRS to compoundCRS case (#2131)<br>
<br>
o hgridshift/vgridshift: defer grid opening when grid has already<br>
been opened (#2132)<br>
<br>
o Resolve a few shadowed declaration warnings (#2142)<br>
<br>
o ProjectedCRS identification: deal with switched 1st/2nd std parallels for<br>
LCC_2SP(#2153)<br>
<br>
o Fix Robinson inverse projection (#2154)<br>
<br>
o createOperations(): do not remove ballpark transformation if there are only<br>
grid based operations, even if they cover the whole area of use (#2156)<br>
<br>
o createFromCoordinateReferenceSystemCodes(): 'optimization' to avoid using<br>
C++ exceptions (#2161)<br>
<br>
o Ingestion of WKT1_GDAL: correctly map 'Cylindrical_Equal_Area' (#2167)<br>
<br>
o Add limited support for non-conformant WKT1 LAS COMPD_CS[] (#2172)<br>
<br>
o PROJ4 string import: take into correctly non-metre unit when the string<br>
looks like the one for WGS 84 / Pseudo Mercator (#2177)<br>
<br>
o io.hpp: avoid dependency to proj_json_streaming_writer.hpp (#2184)<br>
<br>
o Fix support of WKT1_GDAL with netCDF rotated pole formulation (#2186)<br>
<br>
<br>
<br>
6.3.2 Release Notes<br>
-------------------<br>
<br>
Bug fixes<br>
---------<br>
<br>
o validateParameters(): fix false-positive warning on<br>
Equidistant Cylindrical (#1947)<br>
<br>
o proj_create_crs_to_crs(): avoid potential reprojection failures when<br>
reprojecting area of use to source and target CRS (#1993)<br>
<br>
o createOperations(): fix wrong pipeline generation with CRS that has +nadgrids=<br>
and +pm= (#2003)<br>
<br>
o Fix bad copy&replace pattern on HEALPix and rHEALPix projection names (#2006)<br>
<br>
o createUnitOfMeasure(): use full double resolution for the conversion<br>
factor (#2013)<br>
<br>
o data/Makefile.am: remove bashism (#2047)<br>
<br>
o ProjectedCRS::identify(): tune it to better work with ESRI WKT representation<br>
of EPSG:2193 (#2058)<br>
<br>
o EngineeringCRS: when exporting to WKT1_GDAL, output unit and axis (#2091)<br>
<br>
o Add missing entries in grid_alternatives for Portugal grids coming from<br>
ESRI entries (#2103)<br>
<br>
o Fix working of Helmert transform between the horizontal part of 2<br>
compoundCRS (#2110)<br>
<br>
o ESRI_WKT ingestion: make sure to identify to non-deprecated EPSG entry when<br>
possible (#2118)<br>
<br>
o Make sure that importing a Projected 3D CRS from WKT:2019 keeps the base<br>
geographic CRS as 3D (#2124)<br>
<br>
o createOperations(): improve results of compoundCRS to compoundCRS case (#2130)<br>
<br>
o PROJ4 string import: take into correctly non-metre unit when the string looks<br>
like the one for WGS 84 / Pseudo Mercator (#2178)<br>
<br>
o Fix support of WKT1_GDAL with netCDF rotated pole formulation (#2187)<br>
<br>
o io.hpp: avoid dependency to proj_json_streaming_writer.hpp (#2188)<br>
<br>
<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Mon, 27 Apr 2020 12:38:32 +0200<br>
From: David Gispert <<a href="mailto:davidgispert@gmail.com" target="_blank" rel="noreferrer">davidgispert@gmail.com</a>><br>
To: <a href="mailto:proj@lists.osgeo.org" target="_blank" rel="noreferrer">proj@lists.osgeo.org</a><br>
Subject: [PROJ] projection Gall-Bomford (Gall Modified)<br>
Message-ID:<br>
<<a href="mailto:CALZ3vN19eLLHr_X%2BqNk%2BxAO4Sf-jhYvGJDSgNGaGvkQQA%2BtUSQ@mail.gmail.com" target="_blank" rel="noreferrer">CALZ3vN19eLLHr_X+qNk+xAO4Sf-jhYvGJDSgNGaGvkQQA+tUSQ@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi everybody.<br>
<br>
I need help to aggregate the Gall-Bombford projection to Qgis.<br>
<br>
I don't have the characteristics of this projection.<br>
<br>
Only this:<br>
<br>
<a href="https://map-projections.net/compare.php?p1=gall-bomford&p2=gall-stereographic&w=1&sm=1&d=1" rel="noreferrer noreferrer" target="_blank">https://map-projections.net/compare.php?p1=gall-bomford&p2=gall-stereographic&w=1&sm=1&d=1</a><br>
<br>
Thank you very much for your help<br>
<br>
Salutacions,<br>
<br>
David Gispert<br>
<a href="mailto:davidgispert@gmail.com" target="_blank" rel="noreferrer">davidgispert@gmail.com</a><br>
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<br>
Message: 3<br>
Date: Mon, 27 Apr 2020 19:51:34 +0200 (CEST)<br>
From: Oscar van Vlijmen <<a href="mailto:vanadovv@hetnet.nl" target="_blank" rel="noreferrer">vanadovv@hetnet.nl</a>><br>
To: <a href="mailto:proj@lists.osgeo.org" target="_blank" rel="noreferrer">proj@lists.osgeo.org</a><br>
Subject: Re: [PROJ] projection Gall-Bomford (Gall Modified)<br>
Message-ID: <<a href="mailto:1294348252.3408943.1588009894686@kpc.webmail.kpnmail.nl" target="_blank" rel="noreferrer">1294348252.3408943.1588009894686@kpc.webmail.kpnmail.nl</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
My two cents:<br>
<br>
Gall-Bomford projection<br>
===============<br>
<br>
Gall's stereographic cylindrical:<br>
y = R(1 + (1/2)sqrt(2)) tan ((1/2)phi).<br>
For the Oxford version, devised by Guy Bomford about 1950 and called a modified Gall, the meridians are fairly straight at lower latitudes and curve slightly to decrease scale exaggeration near the poles, While the Gall cylindrical spacing is x = R.lambda/sqrt(2), Oxford's modification appears to fit approximately the formula<br>
x = (1 - O.04.phi^4) R.lambda/sqrt(2).<br>
<br>
Source: A Comparison of Pseudocylindrical Map Projections<br>
John P. Snyder<br>
The American Cartographer, Vol. 4 No. 1, 59-81 (1977), page 75<br>
<br>
<br>
The formulas used by most map drawing programs for both Guy Bomford's Modified Gall projection and the Denoyer Semi-Elliptical projection were due to John P. Snyder. In his book Flattening the Earth, he mentions that projection in passing, noting that the scale of longitude is "about 1 - 0.4 * phi^4" where phi represents the latitude, compared to that of the equator, so he may merely have been attempting to sketch out roughly what the projection was like, not to seriously propose a method of drawing it. I haven't tried for an exact match myself; as noted above, I added a small term proportional to the square of the latitude to correct the visibly obvious deficiency of implementations of this formula. Scaled to a latitude in radians, my formula becomes 1 - .01857755 * phi^2 - .030077 * phi^4. I calculated it based on matching two of my measurements that seemed most representative, then checking that the overall result had roughly the same appearance as the real map.<br>
<br>
Source: Pseudocylindrical and Pseudoconic Projections<br>
Part of "Map Projections", by John J. G. Savard<br>
<a href="http://quadibloc.com/maps/mpse04.htm" rel="noreferrer noreferrer" target="_blank">http://quadibloc.com/maps/mpse04.htm</a><br>
<br>
<br>
See also:<br>
proj_cyl_stere.c, Cylindrical Stereographic projection code by Gerald I. Evenden, 2003, 2006, part of the package libproj - library of cartographic projections.<br>
<br>
<br>
Yours,<br>
Oscar van Vlijmen<br>
<br>
<br>
<br>
<br>
<br>
> Op 27 april 2020 om 12:38 schreef David Gispert <<a href="mailto:davidgispert@gmail.com" target="_blank" rel="noreferrer">davidgispert@gmail.com</a>>:<br>
> <br>
> Hi everybody.<br>
> <br>
> I need help to aggregate the Gall-Bombford projection to Qgis.<br>
> <br>
> I don't have the characteristics of this projection.<br>
> <br>
> Only this:<br>
> <br>
> <a href="https://map-projections.net/compare.php?p1=gall-bomford&p2=gall-stereographic&w=1&sm=1&d=1" rel="noreferrer noreferrer" target="_blank">https://map-projections.net/compare.php?p1=gall-bomford&p2=gall-stereographic&w=1&sm=1&d=1</a><br>
> <br>
> Thank you very much for your help<br>
> <br>
> Salutacions,<br>
> <br>
> David Gispert<br>
> <a href="mailto:davidgispert@gmail.com" target="_blank" rel="noreferrer">davidgispert@gmail.com</a> mailto:<a href="mailto:davidgispert@gmail.com" target="_blank" rel="noreferrer">davidgispert@gmail.com</a><br>
> _______________________________________________<br>
> PROJ mailing list<br>
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> <a href="https://lists.osgeo.org/mailman/listinfo/proj" rel="noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/proj</a><br>
> <br>
<br>
<br>
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</blockquote></div>