[talk-au] Talk-au Digest, Vol 160, Issue 14

Warren warren at specialtyfeeds.com.au
Wed Oct 21 09:27:14 UTC 2020


Please share with me John
Regards
Warren

On 21/10/2020 4:48 pm, John Bryant wrote:
> Yes, agreed. At a quick look, the quality seems to be better in some 
> areas than others, some of the suburban areas of Perth come out pretty 
> well. Anyway, if it's useful to anyone, I now have a folder of ~1700 
> .osm files for all the suburbs in Perth, happy to share them if anyone 
> wants. I'll probably do some tinkering with them, as a JOSM learning 
> exercise.
>
> Cheers
> John
>
>
> On Wed, 21 Oct 2020 at 15:49, Warren <warren at specialtyfeeds.com.au 
> <mailto:warren at specialtyfeeds.com.au>> wrote:
>
>     That was  also my plan John.  The Kings Park data set looks like a
>     perfect example.  I can load that as a layer and compare the
>     existing OSM data in another layer.   It is not that difficult to
>     select a number of building traces at a time and bring them in. 
>     However the Kings Park data is already showing some
>     inconsistencies.  For Example Fraser's Restaurant, circular
>     building is showing as orthogonal.  Many of the other buildings
>     are also incorrect.
>     Oh well perhaps it is just another tool that can sometimes be useful.
>     Good effort anyway
>
>
>     On 21/10/2020 3:12 pm, John Bryant wrote:
>>     Seems sensible to me, I'd personally be shying away from imports
>>     without more knowledge of how that works. I was thinking about
>>     biting off very small chunks (even suburbs may be too big for
>>     this) and manually going over them, making sure to not overwrite
>>     existing buildings, and checking them individually to make sure
>>     they match up with relevant imagery. Is there a recommended
>>     workflow for this?
>>
>>     On Wed, 21 Oct 2020 at 15:02, Daniel O'Connor
>>     <daniel.oconnor at gmail.com <mailto:daniel.oconnor at gmail.com>> wrote:
>>
>>         Just to flag a note of caution here - I'd recommend small
>>         scale evaluations /only/ at this stage; or if you do bigger
>>         test imports; in a sandbox environment.
>>
>>         https://wiki.openstreetmap.org/wiki/Sandbox_for_editing#Experiment_with_the_API_.28advanced.29
>>         <https://wiki.openstreetmap.org/wiki/Sandbox_for_editing#Experiment_with_the_API_.28advanced.29>
>>
>>         If there is interest; later we can create a bunch of tasking
>>         manager jobs for importing small chunks at a time; plus write
>>         up the plan(s) as needed
>>
>>
>>         On Wed, Oct 21, 2020 at 5:10 PM John Bryant
>>         <johnwbryant at gmail.com <mailto:johnwbryant at gmail.com>> wrote:
>>
>>             Hi Warren, I've split it out into .osm files for each of
>>             the WA suburbs [1], see attached small example file for
>>             King's Park. Does something like this work? I can drag
>>             and drop them into JOSM, but I'm not 100% sure if they're
>>             formatted or attributed correctly to be most useful.
>>
>>             Cheers
>>             John
>>
>>             [1]
>>             https://data.gov.au/dataset/ds-dga-6a0ec945-c880-4882-8a81-4dbcb85e74e5/details
>>             <https://data.gov.au/dataset/ds-dga-6a0ec945-c880-4882-8a81-4dbcb85e74e5/details>
>>
>>             On Wed, 21 Oct 2020 at 09:58, Warren
>>             <warren at specialtyfeeds.com.au
>>             <mailto:warren at specialtyfeeds.com.au>> wrote:
>>
>>                 Hi John
>>                 I use  JOSM.  Any file format that I can bring in as
>>                 a layer would be fine.   I can then select, copy and
>>                 paste the tracings into an active layer for upload,
>>                 checking  as I go.  Certainly faster than tracing by
>>                 hand.
>>                 I am not sure when JOSM get chocked by file size, but
>>                 say Perth or the South West of WA may be enough of a
>>                 reduction.
>>                 Thanks
>>
>>                 On 21/10/2020 9:20 am, John Bryant wrote:
>>>                 Hi Warren, I could probably help with this. What
>>>                 would be a good size for a chunk? What would be a
>>>                 useful format?
>>>
>>>                 On Wed, 21 Oct 2020 at 07:21, Warren
>>>                 <warren at specialtyfeeds.com.au
>>>                 <mailto:warren at specialtyfeeds.com.au>> wrote:
>>>
>>>                     Hi
>>>
>>>                     I am in the eastern suburbs of Perth where
>>>                     minimal buildings have been
>>>                     traced.  I would be happy to check trace data in
>>>                     my area, lets face it
>>>                     hand tracing is not much fun  and very time
>>>                     consuming.  I think some
>>>                     inaccuracies are acceptable, they can be
>>>                     modified as they become apparent.
>>>                     The data at
>>>                     https://github.com/microsoft/AustraliaBuildingFootprints
>>>                     <https://github.com/microsoft/AustraliaBuildingFootprints>
>>>                     is
>>>                     much too large for me to handle.
>>>                     Is  someone more skillful than me able to break
>>>                     this data set into bite
>>>                     sized chunks?
>>>
>>>
>>>                     _______________________________________________
>>>                     Talk-au mailing list
>>>                     Talk-au at openstreetmap.org
>>>                     <mailto:Talk-au at openstreetmap.org>
>>>                     https://lists.openstreetmap.org/listinfo/talk-au
>>>                     <https://lists.openstreetmap.org/listinfo/talk-au>
>>>
>>
>>             _______________________________________________
>>             Talk-au mailing list
>>             Talk-au at openstreetmap.org <mailto:Talk-au at openstreetmap.org>
>>             https://lists.openstreetmap.org/listinfo/talk-au
>>             <https://lists.openstreetmap.org/listinfo/talk-au>
>>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-au/attachments/20201021/34122ff8/attachment-0001.htm>


More information about the Talk-au mailing list