[HOT] Mapping task for seismic risk assessment
jcampbell.geo at gmail.com
Thu Oct 8 00:19:18 UTC 2015
John, no worries, we'll handle it. Appreciate your input.
But given that the buildings are not only shifted, but often incorrect, I
think it a better option to have them adjusted in real time (even with the
potential issues that raises). I've updated the task instructions to
indicate this. I also don't expect there to be a massive number of
volunteers, so we'll keep an eye on the work as it progresses and determine
if we need to change the approach.
Joshua S Campbell
On Wed, Oct 7, 2015 at 6:58 PM, john whelan <jwhelan0112 at gmail.com> wrote:
> So what we are saying then is the Bing imagery is fine but the many of the
> existing buildings do not align to the Bing imagery for one reason or
> another. My concerns are new mappers will find this confusing and the
> effort in moving each building individually by individual mappers is to put
> it mildly a waste of resources.
> If someone who knows what they are doing pulls down the entire area into
> JOSM they could select each mappers buildings in turn and move them into
> place on the Bing imagery. Yes I could do it but I have a batch of some
> twenty tiles to validate on a different project that I feel a greater
> commitment to. Besides that one of my financial institutions made a
> mistake today which involved me going across town to sort it and and I'm
> still grumpy as you may have noticed. Could someone else take the
> responsibility to line up the existing buildings please?
> Cheerio John
> On 7 October 2015 at 18:48, Blake Girardot <bgirardot at gmail.com> wrote:
>> In looking at the osm gps traces and strava gps data, the current bing
>> imagery looks quite well aligned to me.
>> On 10/8/2015 12:20 AM, john whelan wrote:
>>> I think the issue is how can we make this easy for new mappers. You can
>>> select multiple buildings in JOSM by downloading the area then select
>>> buildings, then select an author within the selection then move all the
>>> buildings by that author at once. It's not complicated just a pain to
>>> do if some of the buildings have been corrected already.
>>> Sometimes in OSM its less work to blast everything that is there
>>> checking the tags first to see its only buildings without additional
>>> tags then remap than it is to clean up each building. However that
>>> approach is generally frowned on in OSM.
>>> May I suggest you freeze this project for the moment and get someone to
>>> nudge the existing buildings into place then open it up again.
>>> I'm not trying to pour cold water on the project but trying to head off
>>> a potential mess.
>>> Cheerio John
>>> On 7 October 2015 at 16:28, Joshua Campbell <jcampbell.geo at gmail.com
>>> <mailto:jcampbell.geo at gmail.com>> wrote:
>>> In reviewing the existing building data, you are correct it is
>>> shifted. However, the data does not seem to be very accurate.
>>> In this situation, I'm wondering it makes more sense to
>>> double-check, correct, and update that existing data, rather than
>>> try to bulk shift it (which I've never done). But I'm open to
>>> suggestions on the best way forward.
>>> >From the imagery perspective, the Bing Imagery analyzer indicates
>>> the imagery is from May 2013. The DigitalGlobe archive shows a lot
>>> of collection in that area in May 2013, but one scene in particular
>>> (Catalog ID: 1030010022C8C400) is quite good. If this is the scene
>>> in Bing, then I'm inclined to think the imagery is spatially correct
>>> and serves as a good base to map from.
>>> On Tue, Oct 6, 2015 at 12:48 PM, john whelan <jwhelan0112 at gmail.com
>>> <mailto:jwhelan0112 at gmail.com>> wrote:
>>> Can some one double check the imagery, many buildings appear to
>>> be already mapped but are displaced from the imagery. Perhaps
>>> some one could do a bulk move of the existing buildings?
>>> Thanks John
>>> On 6 October 2015 at 12:20, Joshua Campbell
>>> <jcampbell.geo at gmail.com <mailto:jcampbell.geo at gmail.com>>
>>> Just wanted to announce the creation of a new mapping task
>>> in the Kyrgyz Republic focused on seismic risk assessment
>>> (http://tasks.hotosm.org/project/1235). The project is
>>> funded by the Global Facility for Disaster Reduction and
>>> Recovery, managed by World Bank and implemented by ARUP (and
>>> partners) and includes seismic risk modeling to better
>>> understand and manage earthquake risks.
>>> The unique element to this task is that the resulting OSM
>>> data will be directly integrated into a seismic risk model
>>> which will be used by the Kyrgyz Republic Government for
>>> decision making on risk reduction and preparedness.
>>> Additionally the OSM building data will be assessed on the
>>> ground and combined with a unique "streetview" type of
>>> imagery data. We hope that some of you can help out with the
>>> building mapping for this task, and help us test the
>>> methodological advancement of using OSM data for risk
>>> Joshua S Campbell PhD
>>> Senior Disaster Risk Management Specialist
>>> Innovation Lab
>>> World Bank GFDRR
>>> HOT mailing list
>>> HOT at openstreetmap.org <mailto:HOT at openstreetmap.org>
>>> HOT mailing list
>>> HOT at openstreetmap.org
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