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South African projections not available #11412
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Author Name: Magnus Homann (@homann) Do you have the proj4 definitions handy? If so, please attach them.
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Author Name: Gavin Fleming (@gubuntu) Replying to [comment:1 homann]:
Attached are the WKT and PROJ4 definitions as csv’s from spatial_ref_sys. SA Hartebeesthoek datum: 4148 is fine - that's the fundamental GEOGCS. The rest have default, invalid proj4 definitions, except for 2054 (the last one) where I have attempted a proj4 definition but I don’t think it’s quite right. SA Cape datum: These all seem to be defined OK – just need to be added to QGIS. |
Author Name: Gavin Fleming (@gubuntu) Replying to [comment:2 gfleming]: sorry, correction - the proj4 definitions for the SA Cape datum projections mentioned below and attached are INCOMPLETE. they only include the datum specs, not the projection or central meridian or other parameters.
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Author Name: Anónimo (Anónimo) Milestone Version 1.0.0 deleted |
Author Name: Gavin Fleming (@gubuntu)
Original Redmine Issue: 1352
Redmine category:projection_support
Assignee: Magnus Homann
QGIS (0.11 Metis) does not list these projections which are vital and standard in South Africa:
South African Coordinate System zone xx (EPSG odd numbers from 22275 - 22293)
and
Hartebeesthoek94/ Loxx (EPSG 2046 - 2055)
afaik there is a recent Trac ticket in proj4 to add these there, but they need to get into QGIS soon. It seems that QGIS writes a prj file with EPSG 4326 (WGS84) when I export a shapefile in one of our "Hartebeesthoek94/ Loxx", which of course is totally invalid. I am getting corrupted shapefiles editing in QGIS and am not sure if it is because of this projection issue.
In uDig they are listed but not defined. In [[PostGIS]] they have WKT definitions but no proj4 definition! This could be a big impediment to professional takeup in SA if not resolved soon.
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