Re: [HOT] Article and video in Dar Post on HOT/World Bank community mapping project

[Mark Iliffe]

Hi All,

Here’s the direct link to the article too: 
http://www.darpost.com/2015/11/data-drones-combat-dars-floods/ 
. I think it 
showcases two really important contributions of http://ramanihuria.org: 
 The impact that this is having on local government 
officials, who through this have got maps for the first time and the drainage 
network collected through community mapping: 
https://a.tiles.mapbox.com/v4/pauluithol.8bfb05ca/page.html?access_token=pk.eyJ1IjoicGF1bHVpdGhvbCIsImEiOiJkMDkzZWFjZWUzZDhkODEwMmZjNzg4ZDI4ZDk1M2Q5NiJ9.obu_bJ3gwHdMlt6ipVyuPA#14/-6.7887/39.2298
 
.
 Hopefully this presents a new opportunity towards creating flood inundation 
and hydrological models from data collected by community members.  

Best,

Mark

> On 20 Nov 2015, at 00:59, Tyler Radford  wrote:
> 
> Hi all,
> 
> A recent update from our project in Dar es Salaam, Tanzania. World Bank team 
> member Deogratius Minja is interviewed:
> 
> https://www.youtube.com/watch?v=920-Uuzlais 
>  
> It's currently the featured video on the front page: http://www.darpost.com/ 
> 
> 
> Congrats to the team!
> 
> Tyler Radford
> Executive Director
> email: tyler.radf...@hotosm.org 
> U.S. mobile: +1 617.285.2009
> 
> Humanitarian OpenStreetMap Team 
> Using OpenStreetMap for Humanitarian Response & Economic Development
> web  | twitter  | facebook 
>  | donate 
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[HOT] Why did you give to HOT? Win a prize for yourself and for HOT!

[Tyler Radford]

My heartfelt thanks to 151 of you who have donated to HOT's fundraising
campaign donate.hotosm.org so far. Two quick ways you can keep helping:

1. Personally tell a friend or family member why you gave and ask them to
do the same.

2. Tell your 200-word "Giving Story" and help HOT win $5000 more! Facebook
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*Tyler Radford*
Executive Director
email: tyler.radf...@hotosm.org
U.S. mobile: +1 617.285.2009

*Humanitarian OpenStreetMap Team *
*Using OpenStreetMap for Humanitarian Response & Economic Development*
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[HOT] Task 1238 Canaan Important Deletion of existing objects

[Pierre Béland]

Being in Port-au-Prince for a Training session of the Haiti OpenStreetMap 
community (Espace OSM francophone project), I collaborate this week with the 
Haiti OSM community who have monitored urbanisation progression in the Canaan 
sector, providing UAV imagery in 2013, 2014 and 2015 (60% of the zone covered 
so far).  They have also added to osm the building footprints in the area from 
precise and accurate imagery (4 cm precision).

We organize a mapathon tomorrow to revise the Canaan zone using the November 
2015 imagery available and monitor the progress of rapid House contruction in 
this sector.  

Planning the work, I see today that one contributor did most of Tak 1238 for 
Canaan Haiti and it seems deleted systematically buildings before redrawing 
them.  In JOSM if I download buildings and search for newly created buildings 
(ie version:1), most of the buildings have version=1. 
If this is exact, we should note that this is contrary to the OSM philosophy. 
The rule that we generally follow at OSM to respect previous contributions and 
keep history, is to revise geometry and not delete / retrace.

For these two changesets alone, I count 50 and 44 ways 
deleted.http://www.openstreetmap.org/changeset/35462043
http://www.openstreetmap.org/changeset/35462424

At the same time, many buildings are missing. Since I have no comparizon with 
the situation before this mapping, It is hard to say what was done exactly, if 
any building were erased and not replaced.
Could somebody confirm that buildings were systematically deleted before 
retracing. What should we do to correct rapidly this situation before we start 
the mapathon tomorrow?
  
Pierre 
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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Dale Kunce]

Pierre,
Because of the difficulty in keeping the Canaan area up to date, due to the
rapid urbanization. And a number of recent mapping incomplete efforts ARC
used imagery from September of this year to complete a full QA/QC of the
Canaan area, this included correcting spatial accuracy and updating
building footprints. We spent an entire month of staff time performing this
QA. The data is essential for a coordinated project we are doing with
multiple partners.

Can you confirm the date on the drone imagery? I was told that imagery
flown in 2015 was lost due to a malfunction on the OSM-FR servers. Is this
imagery available? Please be very mindful of the date flown as even a month
can show major changes in the area.

I highly suggest mapping the campeche or onaville areas for the mapathon.
Both projects have up to date high quality satellite imagery and are in
need of more love than central Canaan at the moment.

As always feel free to reach out to me directly if you have further issues
or questions?

Dale

On Fri, Nov 20, 2015, 1:32 PM Pierre Béland  wrote:

> Being in Port-au-Prince for a Training session of the Haiti OpenStreetMap
> community (Espace OSM francophone project), I collaborate this week with
> the Haiti OSM community who have monitored urbanisation progression in the
> Canaan sector, providing UAV imagery in 2013, 2014 and 2015 (60% of the
> zone covered so far).  They have also added to osm the building footprints
> in the area from precise and accurate imagery (4 cm precision).
>
> We organize a mapathon tomorrow to revise the Canaan zone using the
> November 2015 imagery available and monitor the progress of rapid House
> contruction in this sector.
>
> Planning the work, I see today that one contributor did most of Tak 1238
> for Canaan Haiti and it seems deleted systematically buildings before
> redrawing them.  In JOSM if I download buildings and search for newly
> created buildings (ie version:1), most of the buildings have version=1.
>
> If this is exact, we should note that this is contrary to the OSM
> philosophy. The rule that we generally follow at OSM to respect previous
> contributions and keep history, is to revise geometry and not delete /
> retrace.
>
> For these two changesets alone, I count 50 and 44 ways deleted.
> http://www.openstreetmap.org/changeset/35462043
> http://www.openstreetmap.org/changeset/35462424
>
> At the same time, many buildings are missing. Since I have no comparizon
> with the situation before this mapping, It is hard to say what was done
> exactly, if any building were erased and not replaced.
>
> Could somebody confirm that buildings were systematically deleted before
> retracing. What should we do to correct rapidly this situation before we
> start the mapathon tomorrow?
>
>
> Pierre
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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Rafael Avila Coya]

Hi, Pierre:

I guess this is what the majority of people do, and only the most
experienced users re-trace objects, also using the replace geometry tool
(CTRL+SHIFT+G). It took me long to me to realise about that too.

As usual in these cases, I would contact him to check what happened, and
tell him how he should proceed from now on, so he learns the advantages
of not deleting objects unless really needed, but improving those
objects instead.

I've checked the edits by that user, and he made lots of changesets
(maybe around hundred), so I see a potencial reversion very troublesome
and time consuming.

The first of the changesets seem to have been edited about a month ago
[1]. So around 6 am 21 Oct 2015.

To check what buildings were at the area before deletion, you may use
the next overpass query: [2]. As there isn't any Canaan area in OSM,
just used the ({{bbox}}) thing. I set the date at 00:00:01 of that day
(so 6 hours before the first changeset).

With this other query [3] you can get a file with the building ways that
were present at that same date and time, that were deleted, and also
those that were modified and new buildings created. The output file
don't open in JOSM, but could be use to get statistical info (for
example) on number of buildings deleted.

Cheers,

Rafael.

[1] http://www.openstreetmap.org/changeset/34784526
[2] http://overpass-turbo.eu/s/cQv
[3] http://overpass-turbo.eu/s/cQw


On 20/11/15 19:29, Pierre Béland wrote:
> Being in Port-au-Prince for a Training session of the Haiti
> OpenStreetMap community (Espace OSM francophone project), I collaborate
> this week with the Haiti OSM community who have monitored urbanisation
> progression in the Canaan sector, providing UAV imagery in 2013, 2014
> and 2015 (60% of the zone covered so far).  They have also added to osm
> the building footprints in the area from precise and accurate imagery (4
> cm precision).
> 
> We organize a mapathon tomorrow to revise the Canaan zone using the
> November 2015 imagery available and monitor the progress of rapid House
> contruction in this sector. 
> 
> Planning the work, I see today that one contributor did most of Tak 1238
> for Canaan Haiti and it seems deleted systematically buildings before
> redrawing them.  In JOSM if I download buildings and search for newly
> created buildings (ie version:1), most of the buildings have version=1.
> 
> If this is exact, we should note that this is contrary to the OSM
> philosophy. The rule that we generally follow at OSM to respect previous
> contributions and keep history, is to revise geometry and not delete /
> retrace.
> 
> For these two changesets alone, I count 50 and 44 ways deleted.
> http://www.openstreetmap.org/changeset/35462043
> http://www.openstreetmap.org/changeset/35462424
> 
> At the same time, many buildings are missing. Since I have no comparizon
> with the situation before this mapping, It is hard to say what was done
> exactly, if any building were erased and not replaced.
> 
> Could somebody confirm that buildings were systematically deleted before
> retracing. What should we do to correct rapidly this situation before we
> start the mapathon tomorrow?
>  
>  
> Pierre
> 
> 
> ___
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> HOT@openstreetmap.org
> https://lists.openstreetmap.org/listinfo/hot
> 

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Re: [HOT] HOT Digest, Vol 69, Issue 21

[Kazeem Owolabi]

Evening All,

I am currently having issues with my JOSM, it seems not to connect to the
HOT Tasking manager and the remote control is enabled.

Please, I need a bail out here, need to map over the weekend with JOSM.

Thanks.

On Fri, Nov 20, 2015 at 6:57 PM,  wrote:

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> Today's Topics:
>
>1. Putting communities on the map in Bangladesh - research
>   report (Lizz Harrison)
>
>
> --
>
> Message: 1
> Date: Fri, 20 Nov 2015 17:20:42 +
> From: Lizz Harrison 
> To: "hot@openstreetmap.org" 
> Cc: "Carmen Sumadiwiria \(carm.s...@gmail.com\)" 
> Subject: [HOT] Putting communities on the map in Bangladesh - research
> report
> Message-ID:
> <27b76e823cc6e34db90373be8c55f5668c54d...@yci-hq-ex05.yci.local>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all,
>
> We thought you might be interested in our new research report on what
> influences digital map-making with young volunteers in Bangladesh.  Carmen
> Sumadiwiria and Y Care International produced the report together from
> Carmen's research in Bangladesh this summer.  We're really thankful for the
> OSM Bangladesh community for being involved.  The research looks at
> influences in mapping and a Y Care International pilot getting young
> volunteers from the UK and Bangladesh mapping with coordination with the
> Missing Maps project.  Any comments or feedback very welcome!
>
> The report can also be accessed from Y Care International's website here<
> http://www.ycareinternational.org/publications/putting-vulnerable-communities-on-the-map-a-research-report-on-what-influences-digital-map-making-with-young-volunteers-in-bangladesh/>
> and PreventionWeb here<
> http://www.preventionweb.net/english/professional/publications/v.php?id=46682
> >.
>
> Many thanks and happy reading,
> Lizz
> .
> Lizz Harrison
> Disaster Risk Reduction and Emergencies Advisor
>
> Y Care International
> 67-69 Cowcross Street, London, EC1M 6BP
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> Main:   +44 (0)20 7549 3150
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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Paul Norman]

On 11/20/2015 11:30 AM, Rafael Avila Coya wrote:

I've checked the edits by that user, and he made lots of changesets
(maybe around hundred), so I see a potencial reversion very troublesome
and time consuming.


There are tools specifically for reverting all changesets made by a user 
between a date range.


I haven't studied this case, so I have no idea if a revert is needed, 
but if locals think that one necessary for cleanup then there are people 
who can run it.


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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Dale Kunce]

Rafael,
We decided to do large scale deletion for a number of reasons.

   - Errors within iD that cause many buildings to be traced several times
   thus resulting in many many overlapping buildings.
   - I personally fixed thousands of overlaps and fixed several thousand of
  other validation errors in the area.
   - Poor spatial consistency between multiple imagery resources
  - Bing
  - 2013 drone imagery
  - 2014 drone imagery
  - 2015 drone imagery
  - Recent GeoEye imagery
   - Lack of existing drone imagery led us to acquire high resolution
   satellite imagery.
  - Imagery isn't nearly as clean and sharp as the drone imagery being
  shot but is consistent throughout the entire area.

*Do not *revert these changes as it represents hundreds of man hours by ARC
staff to clean up and fix this area. The area in its current state is the
most up to date the area *has ever been *due to previous efforts by Haiti
Communitaire and the ARC GIS team. We have spent considerable time in the
field and remotely mapping this area.

Again, for continued questions about these changesets please contact me
off-list.

Dale




On Fri, Nov 20, 2015 at 2:30 PM, Rafael Avila Coya 
wrote:

> Hi, Pierre:
>
> I guess this is what the majority of people do, and only the most
> experienced users re-trace objects, also using the replace geometry tool
> (CTRL+SHIFT+G). It took me long to me to realise about that too.
>
> As usual in these cases, I would contact him to check what happened, and
> tell him how he should proceed from now on, so he learns the advantages
> of not deleting objects unless really needed, but improving those
> objects instead.
>
> I've checked the edits by that user, and he made lots of changesets
> (maybe around hundred), so I see a potencial reversion very troublesome
> and time consuming.
>
> The first of the changesets seem to have been edited about a month ago
> [1]. So around 6 am 21 Oct 2015.
>
> To check what buildings were at the area before deletion, you may use
> the next overpass query: [2]. As there isn't any Canaan area in OSM,
> just used the ({{bbox}}) thing. I set the date at 00:00:01 of that day
> (so 6 hours before the first changeset).
>
> With this other query [3] you can get a file with the building ways that
> were present at that same date and time, that were deleted, and also
> those that were modified and new buildings created. The output file
> don't open in JOSM, but could be use to get statistical info (for
> example) on number of buildings deleted.
>
> Cheers,
>
> Rafael.
>
> [1] http://www.openstreetmap.org/changeset/34784526
> [2] http://overpass-turbo.eu/s/cQv
> [3] http://overpass-turbo.eu/s/cQw
>
>
> On 20/11/15 19:29, Pierre Béland wrote:
> > Being in Port-au-Prince for a Training session of the Haiti
> > OpenStreetMap community (Espace OSM francophone project), I collaborate
> > this week with the Haiti OSM community who have monitored urbanisation
> > progression in the Canaan sector, providing UAV imagery in 2013, 2014
> > and 2015 (60% of the zone covered so far).  They have also added to osm
> > the building footprints in the area from precise and accurate imagery (4
> > cm precision).
> >
> > We organize a mapathon tomorrow to revise the Canaan zone using the
> > November 2015 imagery available and monitor the progress of rapid House
> > contruction in this sector.
> >
> > Planning the work, I see today that one contributor did most of Tak 1238
> > for Canaan Haiti and it seems deleted systematically buildings before
> > redrawing them.  In JOSM if I download buildings and search for newly
> > created buildings (ie version:1), most of the buildings have version=1.
> >
> > If this is exact, we should note that this is contrary to the OSM
> > philosophy. The rule that we generally follow at OSM to respect previous
> > contributions and keep history, is to revise geometry and not delete /
> > retrace.
> >
> > For these two changesets alone, I count 50 and 44 ways deleted.
> > http://www.openstreetmap.org/changeset/35462043
> > http://www.openstreetmap.org/changeset/35462424
> >
> > At the same time, many buildings are missing. Since I have no comparizon
> > with the situation before this mapping, It is hard to say what was done
> > exactly, if any building were erased and not replaced.
> >
> > Could somebody confirm that buildings were systematically deleted before
> > retracing. What should we do to correct rapidly this situation before we
> > start the mapathon tomorrow?
> >
> >
> > Pierre
> >
> >
> > ___
> > HOT mailing list
> > HOT@openstreetmap.org
> > https://lists.openstreetmap.org/listinfo/hot
> >
>
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>



-- 
sent from my mobile device

Dale Kunce
http://normalhabit.com
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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Pierre Béland]

Thanks Rafael for the overpass queries.


Presler Jean, Fred Moine and Jean-Guilhem took care of the imagery. It is 
available from today.
url for josm tms  
tms[23]:http://wms.openstreetmap.fr/tms/1.0.0/haiti_canaan_nov2015/{zoom}/{x}/{y}
Dale, the flights were done in november. About 60% of the coverage is done so 
far for 2015 as compared to the zone previously covered in 2013 and 2014.  The 
rest of the coverage will be added to the same url above 

Comparizon of this image with GPS traces shows a great accuracy. But the JOSM 
imagery adjustment function can be used to align to previous images (ie Bing 
and WW3).
  
Pierre 

  De : Rafael Avila Coya 
 À : hot@openstreetmap.org 
 Envoyé le : Vendredi 20 novembre 2015 14h30
 Objet : Re: [HOT] Task 1238 Canaan Important Deletion of existing objects
   
Hi, Pierre:

I guess this is what the majority of people do, and only the most
experienced users re-trace objects, also using the replace geometry tool
(CTRL+SHIFT+G). It took me long to me to realise about that too.

As usual in these cases, I would contact him to check what happened, and
tell him how he should proceed from now on, so he learns the advantages
of not deleting objects unless really needed, but improving those
objects instead.

I've checked the edits by that user, and he made lots of changesets
(maybe around hundred), so I see a potencial reversion very troublesome
and time consuming.

The first of the changesets seem to have been edited about a month ago
[1]. So around 6 am 21 Oct 2015.

To check what buildings were at the area before deletion, you may use
the next overpass query: [2]. As there isn't any Canaan area in OSM,
just used the ({{bbox}}) thing. I set the date at 00:00:01 of that day
(so 6 hours before the first changeset).

With this other query [3] you can get a file with the building ways that
were present at that same date and time, that were deleted, and also
those that were modified and new buildings created. The output file
don't open in JOSM, but could be use to get statistical info (for
example) on number of buildings deleted.

Cheers,

Rafael.

[1] http://www.openstreetmap.org/changeset/34784526
[2] http://overpass-turbo.eu/s/cQv
[3] http://overpass-turbo.eu/s/cQw


On 20/11/15 19:29, Pierre Béland wrote:
> Being in Port-au-Prince for a Training session of the Haiti
> OpenStreetMap community (Espace OSM francophone project), I collaborate
> this week with the Haiti OSM community who have monitored urbanisation
> progression in the Canaan sector, providing UAV imagery in 2013, 2014
> and 2015 (60% of the zone covered so far).  They have also added to osm
> the building footprints in the area from precise and accurate imagery (4
> cm precision).
> 
> We organize a mapathon tomorrow to revise the Canaan zone using the
> November 2015 imagery available and monitor the progress of rapid House
> contruction in this sector. 
> 
> Planning the work, I see today that one contributor did most of Tak 1238
> for Canaan Haiti and it seems deleted systematically buildings before
> redrawing them.  In JOSM if I download buildings and search for newly
> created buildings (ie version:1), most of the buildings have version=1.
> 
> If this is exact, we should note that this is contrary to the OSM
> philosophy. The rule that we generally follow at OSM to respect previous
> contributions and keep history, is to revise geometry and not delete /
> retrace.
> 
> For these two changesets alone, I count 50 and 44 ways deleted.
> http://www.openstreetmap.org/changeset/35462043
> http://www.openstreetmap.org/changeset/35462424
> 
> At the same time, many buildings are missing. Since I have no comparizon
> with the situation before this mapping, It is hard to say what was done
> exactly, if any building were erased and not replaced.
> 
> Could somebody confirm that buildings were systematically deleted before
> retracing. What should we do to correct rapidly this situation before we
> start the mapathon tomorrow?
>  
>  
> Pierre
> 
> 
> ___
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> https://lists.openstreetmap.org/listinfo/hot


> 

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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Dale Kunce]

Pierre,
The drone imagery looks great. The existing imagery covers the Onaville
area and would be great for tracing. I've altered the existing Onaville
task (http://tasks.hotosm.org/project/1242) to include the updated imagery
as well as fixed the instructions and project description.

There seems to be a bug in the TM that does not allow me to serve the
imagery without a license once a license is set, past license was NextView.
I've set the license to Public Domain, best alternative, but am unfamiliar
with the license needed for the drone imagery. Pierre, let me know what the
license should be and we can make a new one.

Note that a student mapathon will be mapping the area tonight for
OSMGeoWeek.

Dale

On Fri, Nov 20, 2015 at 3:18 PM, Pierre Béland  wrote:

> Thanks Rafael for the overpass queries.
>
>
> Presler Jean, Fred Moine and Jean-Guilhem took care of the imagery. It is
> available from today.
> url for josm tms  tms[23]:
> http://wms.openstreetmap.fr/tms/1.0.0/haiti_canaan_nov2015/{zoom}/{x}/{y}
>
> Dale, the flights were done in november. About 60% of the coverage is done
> so far for 2015 as compared to the zone previously covered in 2013 and
> 2014.  The rest of the coverage will be added to the same url above
>
> Comparizon of this image with GPS traces shows a great accuracy. But the
> JOSM imagery adjustment function can be used to align to previous images
> (ie Bing and WW3).
>
>
> Pierre
>
> --
> *De :* Rafael Avila Coya 
> *À :* hot@openstreetmap.org
> *Envoyé le :* Vendredi 20 novembre 2015 14h30
> *Objet :* Re: [HOT] Task 1238 Canaan Important Deletion of existing
> objects
>
> Hi, Pierre:
>
> I guess this is what the majority of people do, and only the most
> experienced users re-trace objects, also using the replace geometry tool
> (CTRL+SHIFT+G). It took me long to me to realise about that too.
>
> As usual in these cases, I would contact him to check what happened, and
> tell him how he should proceed from now on, so he learns the advantages
> of not deleting objects unless really needed, but improving those
> objects instead.
>
> I've checked the edits by that user, and he made lots of changesets
> (maybe around hundred), so I see a potencial reversion very troublesome
> and time consuming.
>
> The first of the changesets seem to have been edited about a month ago
> [1]. So around 6 am 21 Oct 2015.
>
> To check what buildings were at the area before deletion, you may use
> the next overpass query: [2]. As there isn't any Canaan area in OSM,
> just used the ({{bbox}}) thing. I set the date at 00:00:01 of that day
> (so 6 hours before the first changeset).
>
> With this other query [3] you can get a file with the building ways that
> were present at that same date and time, that were deleted, and also
> those that were modified and new buildings created. The output file
> don't open in JOSM, but could be use to get statistical info (for
> example) on number of buildings deleted.
>
> Cheers,
>
> Rafael.
>
> [1] http://www.openstreetmap.org/changeset/34784526
> [2] http://overpass-turbo.eu/s/cQv
> [3] http://overpass-turbo.eu/s/cQw
>
>
> On 20/11/15 19:29, Pierre Béland wrote:
> > Being in Port-au-Prince for a Training session of the Haiti
> > OpenStreetMap community (Espace OSM francophone project), I collaborate
> > this week with the Haiti OSM community who have monitored urbanisation
> > progression in the Canaan sector, providing UAV imagery in 2013, 2014
> > and 2015 (60% of the zone covered so far).  They have also added to osm
> > the building footprints in the area from precise and accurate imagery (4
> > cm precision).
> >
> > We organize a mapathon tomorrow to revise the Canaan zone using the
> > November 2015 imagery available and monitor the progress of rapid House
> > contruction in this sector.
> >
> > Planning the work, I see today that one contributor did most of Tak 1238
> > for Canaan Haiti and it seems deleted systematically buildings before
> > redrawing them.  In JOSM if I download buildings and search for newly
> > created buildings (ie version:1), most of the buildings have version=1.
> >
> > If this is exact, we should note that this is contrary to the OSM
> > philosophy. The rule that we generally follow at OSM to respect previous
> > contributions and keep history, is to revise geometry and not delete /
> > retrace.
> >
> > For these two changesets alone, I count 50 and 44 ways deleted.
> > http://www.openstreetmap.org/changeset/35462043
> > http://www.openstreetmap.org/changeset/35462424
> >
> > At the same time, many buildings are missing. Since I have no comparizon
> > with the situation before this mapping, It is hard to say what was done
> > exactly, if any building were erased and not replaced.
> >
> > Could somebody confirm that buildings were systematically deleted before
> > retracing. What should we do to correct rapidly this situation before we
> > start the mapathon tomorrow?
> >
> >
> > Pierre
> >
> >
> > ___

[HOT] Mapathon OSM Haiti : Canaan housing and road revision

[Pierre Béland]

In the context of the OSM Francophone Space, we organize tomorrow a Mapathon at 
Communitere in Port-au-Prince, Haiti
Hopefully our colleagues gathered in Lome, Togo will join us virtually to 
contribute to update the data.

We will work with the November 2015 imagery realised by Presler Jean and the 
OSM Haiti community and revise information on Canaan to reflect the evolution 
of housing in particular.

Deforestation of the mountains and the rapid urbanization of areas along the 
Canaan Ravines pose a risk to people nearby. The OSM Haiti community has made 
flights of UAVs over the area since 2013 to measure the progress of residential 
buildings and identify the most at-risk areas. In parallel, meetings with local 
communities aim to raise awareness of the risks related to habitat in a flood 
zone where heavy rains swell rapidly in the Ravines. Meetings with local 
councils also help to support them in analyzing data and identifying solutions 
and look at long-term planning.

The precision of UAV images will allow to draw buildings and roads in the area, 
and revise as new construction or relocation of houses in areas most at risk to 
other areas.

We will publish the job tomorrow morning.In the meantime, I am asking that we 
archive the current ONA job using Satellite imagery to avoid any duplication. 

Dale, could you archive the task and avoid to map from the UAV imagery tonight 
in your mapathons? This woud let the OSM Haiti community map tomorrow from the 
UAV imagery they produced.
 regard

Pierre 
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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Pierre Béland]

Dale 

We discussed about this privately and I have asked you to let the Haiti OSM 
community have the priviledge be the first ones to use  this imagery for the 
mapathon organized tomorrow and to not use this imagery tonight. I see that you 
persist and that more then 24 contributors are mapping now.
Could you please respect the Haiti OSM community and stop this? 
  
Pierre 

  De : Dale Kunce 
 À : Pierre Béland  
Cc : Rafael Avila Coya ; "hot@openstreetmap.org" 

 Envoyé le : Vendredi 20 novembre 2015 16h12
 Objet : Re: [HOT] Task 1238 Canaan Important Deletion of existing objects
   
Pierre,The drone imagery looks great. The existing imagery covers the Onaville 
area and would be great for tracing. I've altered the existing Onaville task 
(http://tasks.hotosm.org/project/1242) to include the updated imagery as well 
as fixed the instructions and project description.
There seems to be a bug in the TM that does not allow me to serve the imagery 
without a license once a license is set, past license was NextView. I've set 
the license to Public Domain, best alternative, but am unfamiliar with the 
license needed for the drone imagery. Pierre, let me know what the license 
should be and we can make a new one.
Note that a student mapathon will be mapping the area tonight for OSMGeoWeek.
Dale
On Fri, Nov 20, 2015 at 3:18 PM, Pierre Béland  wrote:



Thanks Rafael for the overpass queries.


Presler Jean, Fred Moine and Jean-Guilhem took care of the imagery. It is 
available from today.
url for josm tms  
tms[23]:http://wms.openstreetmap.fr/tms/1.0.0/haiti_canaan_nov2015/{zoom}/{x}/{y}
Dale, the flights were done in november. About 60% of the coverage is done so 
far for 2015 as compared to the zone previously covered in 2013 and 2014.  The 
rest of the coverage will be added to the same url above 

Comparizon of this image with GPS traces shows a great accuracy. But the JOSM 
imagery adjustment function can be used to align to previous images (ie Bing 
and WW3).
  
Pierre 

  De : Rafael Avila Coya 
 À : hot@openstreetmap.org 
 Envoyé le : Vendredi 20 novembre 2015 14h30
 Objet : Re: [HOT] Task 1238 Canaan Important Deletion of existing objects
   
Hi, Pierre:

I guess this is what the majority of people do, and only the most
experienced users re-trace objects, also using the replace geometry tool
(CTRL+SHIFT+G). It took me long to me to realise about that too.

As usual in these cases, I would contact him to check what happened, and
tell him how he should proceed from now on, so he learns the advantages
of not deleting objects unless really needed, but improving those
objects instead.

I've checked the edits by that user, and he made lots of changesets
(maybe around hundred), so I see a potencial reversion very troublesome
and time consuming.

The first of the changesets seem to have been edited about a month ago
[1]. So around 6 am 21 Oct 2015.

To check what buildings were at the area before deletion, you may use
the next overpass query: [2]. As there isn't any Canaan area in OSM,
just used the ({{bbox}}) thing. I set the date at 00:00:01 of that day
(so 6 hours before the first changeset).

With this other query [3] you can get a file with the building ways that
were present at that same date and time, that were deleted, and also
those that were modified and new buildings created. The output file
don't open in JOSM, but could be use to get statistical info (for
example) on number of buildings deleted.

Cheers,

Rafael.

[1] http://www.openstreetmap.org/changeset/34784526
[2] http://overpass-turbo.eu/s/cQv
[3] http://overpass-turbo.eu/s/cQw


On 20/11/15 19:29, Pierre Béland wrote:
> Being in Port-au-Prince for a Training session of the Haiti
> OpenStreetMap community (Espace OSM francophone project), I collaborate
> this week with the Haiti OSM community who have monitored urbanisation
> progression in the Canaan sector, providing UAV imagery in 2013, 2014
> and 2015 (60% of the zone covered so far).  They have also added to osm
> the building footprints in the area from precise and accurate imagery (4
> cm precision).
> 
> We organize a mapathon tomorrow to revise the Canaan zone using the
> November 2015 imagery available and monitor the progress of rapid House
> contruction in this sector. 
> 
> Planning the work, I see today that one contributor did most of Tak 1238
> for Canaan Haiti and it seems deleted systematically buildings before
> redrawing them.  In JOSM if I download buildings and search for newly
> created buildings (ie version:1), most of the buildings have version=1.
> 
> If this is exact, we should note that this is contrary to the OSM
> philosophy. The rule that we generally follow at OSM to respect previous
> contributions and keep history, is to revise geometry and not delete /
> retrace.
> 
> For these two changesets alone, I count 50 and 44 ways deleted.
> http://www.openstreetmap.org/changeset/35462043
> http://www.openstreetmap.org/changeset/35462424
> 
> At the same time

Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Fred Moine]

Dear dale,

Following the email I saw today

For the drone imagery the resolution is 8 cm rather than 50 cm or 30 cm for
satellite imagery.

The date is November, we just finished the processing.

Since 2013 I am making capacity building for OSM Haiti team mainly with my
own budget. Only in 2014 we received a small grant.


In 2015, we reviewed completely our workflow and in February 2015 we
started our hydro simulation with elevation model from the drone.

We also tested a near infra-red camera to update the land cover.


Now the OSM community are quite ready and will be good to include them as
their wish was to do a mapping party with this image.


It would be good now to let OSM Haiti community benefit first using the
imagery and have fun with the mapping party they did organize for tomorrow.
Please, could we respect this whish?



All the best, FredM
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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Fred Moine]

Dear all,

See my answer under the line

Rafael,
We decided to do large scale deletion for a number of reasons.

   - Errors within iD that cause many buildings to be traced several times
   thus resulting in many many overlapping buildings.
   - I personally fixed thousands of overlaps and fixed several thousand of
  other validation errors in the area.

I remember those maphatons done remotely that had caused these duplicates.
Haiti OSM community wanted to correct... But it's good if it has been done




 - Poor spatial consistency between multiple imagery resources


I don't know what is a poor consistenc.

I though it was a good chance to have multiple High resolution imagery (4 /8 cm)

over the same area every years.

But we can talk about it separatly



 - Bing
  - 2013 drone imagery
  - 2014 drone imagery
  - 2015 drone imagery
  - Recent GeoEye imagery
   - Lack of existing drone imagery led us to acquire high resolution
   satellite imagery.

Several time OSM haiti propose to cover this area with drone



 - Imagery isn't nearly as clean and sharp as the drone imagery being
  shot but is consistent throughout the entire area.


At least this area will be mapped and that is a good news, so happy
mapping party for all.

Remote mapping is good, but the involvement of the OSM community in
the field allows  to go further in mobilizing communities on the long
term .
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Re: [HOT] Task 1238 Canaan Important Deletion of existing objects

[Dale Kunce]

Hey guys. Sorry I've been offline with my family the last few hours.

I'm not at the event tonight but will contact them them to encourage
mappers to change projects.

Just as an FYI, we've been planning tonight's event for the past couple of
months with many different partners. As part of osmgeoweek we asked
everyone to coordinate to make sure we wouldn't overlap tasks. This is the
only conflict out of over 70 events run because other organizers
coordinated with the HOT about what day and task they would be working on.

Dale

On Fri, Nov 20, 2015, 5:57 PM Fred Moine  wrote:

> Dear dale,
>
> Following the email I saw today
>
> For the drone imagery the resolution is 8 cm rather than 50 cm or 30 cm
> for satellite imagery.
>
> The date is November, we just finished the processing.
>
> Since 2013 I am making capacity building for OSM Haiti team mainly with my
> own budget. Only in 2014 we received a small grant.
>
>
> In 2015, we reviewed completely our workflow and in February 2015 we
> started our hydro simulation with elevation model from the drone.
>
> We also tested a near infra-red camera to update the land cover.
>
>
> Now the OSM community are quite ready and will be good to include them as
> their wish was to do a mapping party with this image.
>
>
> It would be good now to let OSM Haiti community benefit first using the
> imagery and have fun with the mapping party they did organize for tomorrow.
> Please, could we respect this whish?
>
>
>
> All the best, FredM
> ___
> HOT mailing list
> HOT@openstreetmap.org
> https://lists.openstreetmap.org/listinfo/hot
>
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Re: [HOT] Today is GIS Day

[Mike Thompson]

https://osmlab.github.io/show-me-the-way/ (may take time to load)
Seems to play the same changes over and over again.  Is anyone else seeing
the same thing?

Also, is there any similar service that filters changes by changeset
comment?


On Thu, Nov 19, 2015 at 9:14 AM, Tyler Radford 
wrote:

> Great! For all mapathon organizers, in case you didn't see this link from
> Mikel Maron, here are some tools to help you to motivate mappers during
> your events:
>
> http://osmgeoweek.org/metrics/
> https://osmlab.github.io/show-me-the-way/ (may take time to load)
> http://live.openstreetmap.fr/
>
> *Tyler Radford*
> Executive Director
> email: tyler.radf...@hotosm.org
> U.S. mobile: +1 617.285.2009
>
> *Humanitarian OpenStreetMap Team *
> *Using OpenStreetMap for Humanitarian Response & Economic Development*
> web  | twitter  | facebook
>  | donate 
>
> On Thu, Nov 19, 2015 at 11:01 AM, Vao Matua  wrote:
>
>> Thanks for the encouragement Tyler.
>>
>> The attendees of the Portland Oregon GIS Day mapathon enjoyed watching
>> the progress of all the ongoing mapathons.
>>
>> Emmor
>>
>> On Wed, Nov 18, 2015 at 1:14 PM, Tyler Radford 
>> wrote:
>>
>>> All,
>>>
>>> Today is Day 3 of OSM Geo Week: GIS Day. I encourage everyone to take 10
>>> minutes out of your day today to contribute to a project on
>>> tasks.hotosm.org. (Thank you to those who have already far exceeded
>>> this today!) I'm looking forward to doing this myself tonight at Médecins
>>> Sans Frontières in New York City.
>>>
>>> Today is also a great opportunity to tell a family member, friend, or
>>> colleague why you love OSM and HOT. Some ideas:
>>>
>>>- Show your children or young person how to use iD (or JOSM!)
>>>- Tell someone about our mailing list
>>> and newsletter
>>>
>>>- Run or participate in a mapathon or mapping event
>>>- Hang out on IRC and support other HOT mappers
>>>- Make a personal request to donate at donate.hotosm.org
>>>- Check to see whether your employer has a matching gift program
>>>
>>> Keep those tweets @hotosm #mapthedifference #osmgeoweek coming!
>>>
>>> Tyler
>>>
>>> *Tyler Radford*
>>> Executive Director
>>> email: tyler.radf...@hotosm.org
>>> U.S. mobile: +1 617.285.2009
>>>
>>> *Humanitarian OpenStreetMap Team *
>>> *Using OpenStreetMap for Humanitarian Response & Economic Development*
>>> web  | twitter  |
>>> facebook  | donate
>>> 
>>>
>>> ___
>>> HOT mailing list
>>> HOT@openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/hot
>>>
>>>
>>
>
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>
>
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Re: [HOT] Today is GIS Day

[Mike Thompson]

Answering my own question:


>
> Also, is there any similar service that filters changes by changeset
> comment?
>
Don't know about the changeset comment filter, but you can specify a
bounding box, e.g.:
http://osmlab.github.io/show-me-the-way/#39.38526381099777,-106.435546875,41.83682786072714,-104.0625
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