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

[Warren]

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?
>>
>>
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