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

[Frank Sokolic]

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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> -- 
>
> *Immo F. Blecher**
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> *Email:*_immo at blecher.co.za_ <mailto:immo at blecher.co.za> | 
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> _*Internet:*_http://www.blecher.co.za/_
>
> Contact me: immob19 at gmail.com immoblecher
>
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>
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