Dawid, I have tried to get aerial imagery from Joburg Metro Municipality but they wanted to charge me R20k+ for the imagery. Ekurhuleni was similar. Port Elizabeth (Nelson Mandela Bay municipality), East London (Buffalo City Metropolitan) & Durban (eThekwini Metro Municipality) have similar aerial imagery, but I haven't yet found the right channel to request the imagery.
CoCT initial wanted to charge similar, but I was able to negotiate special permission for OpenStreetMap. I also have the 2013 imagery. They are busy working on 2016 imagery, but wasn't able to get permission for this imagery (yet). On http://coct.aerial.openstreetmap.org.za/ if you select the "DRIFT TEST" layer, this has continental drift correction. The African continental plate is drifting North East at around 3cm per year. The co-ordinate system that City of Cape Town uses the fixed position of the Hartbeeshoek Radio Telescope as the co-ordinate origin. OpenStreetMap uses WGS84. I'll remove "DRIFT TEST" option this evening and make it the default. Yes, this does mean OSM co-ordinates drift out around 3cm per year..., same for the UK... Around 7cm per year for Australia, I'm sure we'll work out a solution at stage, when most of us are mapping at this kind of crazy resolution. I'll get the imagery added to iD and JOSM in a few days, until then feel free to add it manually. Please use tag source=coct-2015 Kind regards, Grant On 7 September 2016 at 15:09, Dawid Loubser <da...@travellinck.com> wrote: > Grant, thanks for your awesome work! These will be *so* useful - I > wonder when / if we could get similar for other provinces? > > P.S. Has anybody spotted an interesting shark or whale in the water yet? > I'm trying. But the res is good enough to spot some great bird flying > formations :-) > > regards, > Dawid > > > On 07/09/2016 16:05, Grant Slater wrote: >> Hi, >> >> Yup... I forgot to move osm.org.za + openstreetmap.org.za by the >> suspend deadline. I had a real adventure moving them to a new >> registrar and getting them unblocked. >> I was in good company: >> http://firefishy.com/orgza-domains-suspended-05092016-top.txt ;-) >> >> Yes, the City of Cape Town aerial imagery is AWESOME! If you squint at >> the aerial imagery of Sandy Bay, it is just about possible to tell if >> someone is wearing a swimming costume. ;-) >> Link reminder: http://coct.aerial.openstreetmap.org.za/ >> >> I haven't updated the NGI aerial imagery since 2014. *hides in shame* >> I've received updated source files from NGI and plan to update it soon. >> >> Kind regards, >> >> Grant >> >> >> On 7 September 2016 at 13:54, Kieron Thwaites <kieron.thwai...@gmail.com> >> wrote: >>> Thanks for the effort Grant -- DNS appears fixed on my side (were you >>> one of the victims of the .org.za mess?), and the imagery looks >>> amazing. Already looking forward to putting it to good use. >>> >>> On a semi-related note, our imagery from NGI is starting to show its >>> age. I'm within walking distance of the Mowbray office, so if >>> updating this imagery is on your radar, let me know if there's >>> anything I can do to assist. >>> >>> --K >>> >>> On 5 September 2016 at 18:04, Grant Slater <openstreet...@firefishy.com> >>> wrote: >>>> Hi All, >>>> >>>> And of course I experience an issue as soon as I sent this... >>>> openstreetmap.org.za DNS has issues, give me a few days to fix. >>>> Sorry for the inconvenience. >>>> >>>> Kind regards, >>>> >>>> Grant >>>> >>>> >>>> On 5 September 2016 at 14:38, Grant Slater <openstreet...@firefishy.com> >>>> wrote: >>>>> Hi OpenStreetMap ZA, >>>>> >>>>> I've been able to get permission for OpenStreetMap to use the City of >>>>> Cape Town's very high resolution 2015 aerial imagery (8cm). I >>>>> collected a copy of the imagery last month. >>>>> >>>>> It will be available in JOSM and iD in a few weeks time. >>>>> >>>>> In the mean time, here is a quick preview: >>>>> http://coct.aerial.openstreetmap.org.za/ >>>>> >>>>> The imagery is expressly ONLY FOR OPENSTREETMAP USAGE. I would have >>>>> preferred it be open to all, but wasn't able to negotiate this with >>>>> CoCT. >>>>> Note CoCT list the imagery on their Open Data portal: >>>>> https://web1.capetown.gov.za/web1/OpenDataPortal/DatasetDetail?DatasetName=Aerial%20photography >>>>> >>>>> Due to continental drift and the conversion between Hartbeeshoek94 and >>>>> WGS84 (as used by OSM) the imagery is *currently* around 66cm offset >>>>> (2016 - 1994 = 22 years. Drift ~3cm per year). I am busy processing >>>>> the imagery to correct this, hence the delay in getting it into OSM >>>>> editors. >>>>> >>>>> Kind regards, >>>>> >>>>> Grant >>>> _______________________________________________ >>>> Talk-ZA mailing list >>>> Talk-ZA@openstreetmap.org >>>> https://lists.openstreetmap.org/listinfo/talk-za >>> _______________________________________________ >>> Talk-ZA mailing list >>> Talk-ZA@openstreetmap.org >>> https://lists.openstreetmap.org/listinfo/talk-za >> _______________________________________________ >> Talk-ZA mailing list >> Talk-ZA@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk-za > > > _______________________________________________ > Talk-ZA mailing list > Talk-ZA@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-za _______________________________________________ Talk-ZA mailing list Talk-ZA@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-za
