Re: [Talk-ca] Toronto building import

[Daniel @jfd553]

+1

From: Nate Wessel [mailto:bike...@gmail.com]
Sent: Saturday, April 04, 2020 14:08
To: talk-ca@openstreetmap.org
Subject: Re: [Talk-ca] Toronto building import


Thanks for the offer Daniel! However I've already processed the data through my 
own, similar workflow. I did a building import a couple years ago so I had 
everything set up on my computer already anyway.

I originally tried dividing the tasks into rectangles so that they would better 
match a bounding-box download in JOSM. I didn't like the results so much 
though; if I kept the tasks around the same size (in terms of buildings), the 
size and shape of the tasks varied a bit too much for my comfort, with some 
tasks getting very large ( as in http://tasks.osmcanada.ca/project/168 ).

I found that irregular task shapes didn't cause any trouble for the last import 
I worked on, though they did make validation a bit harder. For better or worse 
though, I've observed that not much task-level validation actually happens in 
projects like this, if all goes well and the data was good in the first place.

Best,

Nate Wessel, PhD
Planner, Cartographer, Transport Nerd
NateWessel.com<https://www.natewessel.com>
On 2020-04-04 9:21 a.m., Daniel @jfd553 wrote:
I am about to complete the Squamish test area and so far the new ODB import 
procedure seems adequate. So, if you require the data to be pre-processed over 
the selected area just let me know.
However, I would suggest using squares instead of various polygons to define 
tiles because it is simpler to manage OSM data when downloading it in JOSM.

Best,
Daniel

From: Nate Wessel [mailto:bike...@gmail.com]
Sent: Saturday, April 04, 2020 00:57
To: talk-ca@openstreetmap.org<mailto:talk-ca@openstreetmap.org>
Subject: [Talk-ca] Toronto building import


Hi all,

I've been spending some time today working on restarting the Toronto building 
import effort which seems to have stalled a while back (I got distracted, 
sorry!).

What I'm proposing to do is essentially just to finish off the building import 
that was started over a year ago in Ontario, though just within the bounds of 
the City of Toronto. That larger import, at the time, never reached the central 
parts of the city and there are about 55,000 buildings that can still easily be 
imported from the ODB.

There is an outline of the proposal here ( 
https://wiki.openstreetmap.org/wiki/Toronto_building_import )

And I've uploaded some task-level OSM data to GitHub ( 
https://github.com/Nate-Wessel/TO-building-import/tree/master/tasks ) if anyone 
cares to inspect it.

Hopefully this import process will address most of the concerns raised about 
the initial import, including those I raised myself ;-)

Anyway, this email is just to notify y'all that I've been working on this again 
and to start the necessary discussions and get any feedback. I'd love to begin 
to move forward in the next couple of weeks if there is support for this effort 
here, and on the imports mailing list. Please let me know what you think!

Best,
--

Nate Wessel, PhD
Planner, Cartographer, Transport Nerd
NateWessel.com<https://www.natewessel.com>
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Re: [Talk-ca] Toronto building import

[Nate Wessel]

Thanks for the offer Daniel! However I've already processed the data 
through my own, similar workflow. I did a building import a couple years 
ago so I had everything set up on my computer already anyway.


I originally tried dividing the tasks into rectangles so that they would 
better match a bounding-box download in JOSM. I didn't like the results 
so much though; if I kept the tasks around the same size (in terms of 
buildings), the size and shape of the tasks varied a bit too much for my 
comfort, with some tasks getting very large ( as in 
http://tasks.osmcanada.ca/project/168 ).


I found that irregular task shapes didn't cause any trouble for the last 
import I worked on, though they did make validation a bit harder. For 
better or worse though, I've observed that not much task-level 
validation actually happens in projects like this, if all goes well and 
the data was good in the first place.


Best,

Nate Wessel, PhD
Planner, Cartographer, Transport Nerd
NateWessel.com 

On 2020-04-04 9:21 a.m., Daniel @jfd553 wrote:


I am about to complete the Squamish test area and so far the new ODB 
import procedure seems adequate. So, if you require the data to be 
pre-processed over the selected area just let me know.


However, I would suggest using squares instead of various polygons to 
define tiles because it is simpler to manage OSM data when downloading 
it in JOSM.


Best,

Daniel

*From:*Nate Wessel [mailto:bike...@gmail.com]
*Sent:* Saturday, April 04, 2020 00:57
*To:* talk-ca@openstreetmap.org
*Subject:* [Talk-ca] Toronto building import

Hi all,

I've been spending some time today working on restarting the Toronto 
building import effort which seems to have stalled a while back (I got 
distracted, sorry!).


What I'm proposing to do is essentially just to finish off the 
building import that was started over a year ago in Ontario, though 
just within the bounds of the City of Toronto. That larger import, at 
the time, never reached the central parts of the city and there are 
about 55,000 buildings that can still easily be imported from the ODB.


There is an outline of the proposal here ( 
https://wiki.openstreetmap.org/wiki/Toronto_building_import 
 )


And I've uploaded some task-level OSM data to GitHub ( 
https://github.com/Nate-Wessel/TO-building-import/tree/master/tasks ) 
if anyone cares to inspect it.


Hopefully this import process will address most of the concerns raised 
about the initial import, including those I raised myself ;-)


Anyway, this email is just to notify y'all that I've been working on 
this again and to start the necessary discussions and get any 
feedback. I'd love to begin to move forward in the next couple of 
weeks if there is support for this effort here, and on the imports 
mailing list. Please let me know what you think!


Best,

--

Nate Wessel, PhD
Planner, Cartographer, Transport Nerd
NateWessel.com 

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Re: [Talk-ca] Toronto building import

[Daniel @jfd553]

I am about to complete the Squamish test area and so far the new ODB import 
procedure seems adequate. So, if you require the data to be pre-processed over 
the selected area just let me know.
However, I would suggest using squares instead of various polygons to define 
tiles because it is simpler to manage OSM data when downloading it in JOSM.

Best,
Daniel

From: Nate Wessel [mailto:bike...@gmail.com]
Sent: Saturday, April 04, 2020 00:57
To: talk-ca@openstreetmap.org
Subject: [Talk-ca] Toronto building import


Hi all,

I've been spending some time today working on restarting the Toronto building 
import effort which seems to have stalled a while back (I got distracted, 
sorry!).

What I'm proposing to do is essentially just to finish off the building import 
that was started over a year ago in Ontario, though just within the bounds of 
the City of Toronto. That larger import, at the time, never reached the central 
parts of the city and there are about 55,000 buildings that can still easily be 
imported from the ODB.

There is an outline of the proposal here ( 
https://wiki.openstreetmap.org/wiki/Toronto_building_import )

And I've uploaded some task-level OSM data to GitHub ( 
https://github.com/Nate-Wessel/TO-building-import/tree/master/tasks ) if anyone 
cares to inspect it.

Hopefully this import process will address most of the concerns raised about 
the initial import, including those I raised myself ;-)

Anyway, this email is just to notify y'all that I've been working on this again 
and to start the necessary discussions and get any feedback. I'd love to begin 
to move forward in the next couple of weeks if there is support for this effort 
here, and on the imports mailing list. Please let me know what you think!

Best,
--

Nate Wessel, PhD
Planner, Cartographer, Transport Nerd
NateWessel.com
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