[HOT] Is there a process to see if another HOT project has been mapped in the same location?

[John Whelan]

I think it only seems to matter if two building projects overlap.

Two different projects on the same area doesn't matter if one is roads 
and the other is buildings.

I think I agree with you about monitoring on many projects and a 
shortage of validators is something we have to find ways to work round.

Cheerio John


Pierre Béland wrote on 1/10/2022 8:49 PM:
> Hi John
>
> The AOI-BBOX is a rough approximation of the zone covered by the 
> Project, This is ok to decide the extent of data that we download, but 
> less usefull to determine if two projects overlap. For this, we need 
> to look at those two projects more closely. They might slightly 
> overlap or not even overlap.
>
> From a rectangle form, let's cut it in two triangles. These two 
> projects will have the same AOI-BBOX rectangle but will have no 
> overlap since the only share the diagonal line.
>
> As a coordinator for Disaster responses, I have often used the same 
> AOI with various projects having different objectives, the first ones 
> being realised rapidly to support the logistic of the response :
> - roads
> - landuse areas
> - lastly buildings if necessary.
>
> The important is to monitor closely the project and react rapidly if 
> any problem arise, correct the situation, limit the acccess to the 
> project, give new instructions, etc.
>
> The problem for many projects is that there is no closed monitoring, 
> ineffective validation.
>
> Pierre
>
>
> Le lundi 10 janvier 2022, 19 h 31 min 30 s UTC−5, John Whelan 
> <jwhelan0112 at gmail.com> a écrit :
>
>
> I note there are over 3,000 duplicated or overlapping HOT projects.
>
> This would suggest to me that rather than mapping the same area twice 
> we might do better to map areas that have not yet been mapped?
>
> I wonder if some areas are more popular for some reason?
>
> Thanks John
>
> Jiri Vlasak wrote on 1/10/2022 5:37 PM:
>>> Is there a process to see if another HOT project has been mapped in
>>> the same location?
>> Today afternoon I wrote a script to check the intersecting areas [1] and
>> run it on the tasking-manager-tm4-production-api.hotosm.org [2].
>>
>>> What's happened is in the past.  What I'm interested in is preventing
>>> problems in the future.
>> You're not the only one. [1]: 
>> https://paste.sr.ht/~qeef/b17a1473d55079874bf7ab8c400b38c7d0a57310 
>> <https://paste.sr.ht/%7Eqeef/b17a1473d55079874bf7ab8c400b38c7d0a57310> 
>> [2]: 
>> https://paste.sr.ht/~qeef/4d93d86b2689df29f35602a7c8b4265751f5f5cd 
>> <https://paste.sr.ht/%7Eqeef/4d93d86b2689df29f35602a7c8b4265751f5f5cd>
>>
>
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