[QGIS-ZA-user] South African CRSs in QGIS

[Paul Young]

Hi there I tried to pul the Docker Proj4 and it would not upgrade.

It gave: Rel. 4.9.3, 15 August 2016
Maybe it needs to be compiled from source?


On Tue, 13 Nov 2018 at 12:24, Immo Blecher via qgis-za-user <
qgis-za-user at lists.osgeo.org> wrote:

> Hi Frank,
>
> That is weird! I am on 3.4, but installed from the Debian link, not the
> ubuntugis as there I had dependency issues. Maybe there is still a big
> difference between the two. But I will try the ubuntugis route again. The
> proj version obviously makes all the difference.
>
> Regards
>
> Immo
>
>
> On 2018/11/13 12:20, Frank Sokolic via qgis-za-user wrote:
>
> Hi Immo,
>
> Not sure why they don't show up for you. I can see them on QGIS 3.14 and
> the Proj version is 5.1.0. This is on Ubuntu Linux.
>
> Regards, Frank.
>
> On 2018/11/13 11:31, Immo Blecher via qgis-za-user wrote:
>
> Hi QGIS Users,
>
> I can't find these in my QGIS 3.4. And I see that Proj4 is still on
> version 4.93, but the latest seems to be 5.2.
>
> But what I also noticed is that Proj4 changed the way it converts from/to
> Hartebeesthoek94 (15 to 31) from version 4.7 to vers. 4.9: Using proj4 4.7
> to convert one had to turn around E-W and N-S, w.o.w. X = -X and Y = -Y and
> then convert. From vers. 4.9 this was not necessary any longer so I think
> the calculations in QGIS should be sorted out (it is actually a bug and
> that is why everything is upside down and right=left). That would also mean
> that we would not need the ZANGI:ZANGI projections any longer but just use
> the built-in Hartebeesthoek94 ones.
>
> For what it's worth!
>
> Immo
> On 2018/11/13 10:58, Frank Sokolic via qgis-za-user wrote:
>
> Hi QGIS users,
>
> I noticed last week that these CRSs have appeared in QGIS under Project
> Coordinate Systems > Transverse Mercator:
>
> EPSG:102480 Hartebeesthoek94_Lo15
> EPSG:102481 Hartebeesthoek94_Lo17
> EPSG:102482 Hartebeesthoek94_Lo19
> EPSG:102483 Hartebeesthoek94_Lo21
> EPSG:102484 Hartebeesthoek94_Lo23
> EPSG:102485 Hartebeesthoek94_Lo25
> EPSG:102486 Hartebeesthoek94_Lo27
> EPSG:102487 Hartebeesthoek94_Lo29
> EPSG:102488 Hartebeesthoek94_Lo31
> EPSG:102489 Hartebeesthoek94_Lo33
> EPSG:102562 Hartebeesthoek94_Lo19_(E-N)
> EPSG:102563 Hartebeesthoek94_Lo21_(E-N)
> EPSG:102564 Hartebeesthoek94_Lo23_(E-N)
> EPSG:102565 Hartebeesthoek94_Lo25_(E-N)
> EPSG:102566 Hartebeesthoek94_Lo27_(E-N)
> EPSG:102567 Hartebeesthoek94_Lo29_(E-N)
> EPSG:102568 Hartebeesthoek94_Lo31_(E-N)
>
> Anyone know anything about them? Are these now the official South African
> CRSs in the EPSG database? If so, where are L015_(E-N), L017_(E-N) and
> L033_(E-N)?
>
> With these new additions, there are now a few versions of the South
> African CRSs in the QGIS CRS database (e.g. EPSG 2046 to EPSG 2055 as well
> as ZANGI:HBKNO15 to ZANGI:HBK033) so I guess things need to be cleaned up.
>
> Regards, Frank.
>
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> --
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>
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> --
>
> *Immo F. Blecher*
> * Street: *
> * 36 Saffraan Ave., Die Boord, Stellenbosch, 7613, South Africa **Postal:*
> * PO Box 74, Lynedoch, 7603, South Africa **Cell:* +27 83 272 6791 | *Fax:
> *+27 86 736 3302 *Email:* *immo at blecher.co.za* <immo at blecher.co.za> |
> *immob19 at gmail.com* <immob19 at gmail.com> |
> *immob at mymtnmail.co.za <immob at mymtnmail.co.za> **Internet:*
> *http://www.blecher.co.za/* <http://www.blecher.co.za/>
> Contact me: immob19 at gmail.com immoblecher
>
> <http://www.linkedin.com/pub/immo-blecher/30/414/b8>
>
> Please consider your environmental responsibility. Before printing this
> e-mail message, ask yourself whether you really need a hard copy.
>
> IMPORTANT: The contents of this email and any attachments are
> confidential. They are intended for the named recipient(s) only. If you
> have received this email by mistake, please notify the sender immediately
> and do not disclose the contents to anyone or make copies thereof.
>
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