GAP Analysis or Regional OSM Mapping Assessment

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GAP Analysis or Regional OSM Mapping Assessment

Samuel Aiyeoribe-2
Hello House,

I would like to know if there is a way, tool, method or any service that one can you to assess the amount of mapping that has been done for a region so as to plan further mapping. For example, i want to plan how to complete road mapping on OSM for Kano State, Nigeria, is there any tool or service or method i can use to assess the amount of work has been done already for Kano? Simply put may be any service that can give statistic of percentage completion or summary of work done  for road or other features to be mapped.

I understand there is a similar service on Task Manager but i need such from the OSM database side because on Task Manager, one can create multiple tasks for e.g Kano which does give you the true picture.

Will be expecting your assistance.
 
Samuel Aiyeoribe


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Re: GAP Analysis or Regional OSM Mapping Assessment

Russell Deffner-3

Hi Samuel,

 

I was gone all last week, so just seeing this email – did someone already answer you?

 

=Russ

 

Russell Deffner

Email: [hidden email]

US Mobile/SMS/WhatsApp: +1-970-217-4195

OSM/Skype: russdeffner

Humanitarian OpenStreetMap Team (HOT)

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From: Samuel Aiyeoribe [mailto:[hidden email]]
Sent: Wednesday, June 17, 2015 4:04 AM
To: HOT Openstreetmap
Subject: [HOT] GAP Analysis or Regional OSM Mapping Assessment

 

Hello House,

 

I would like to know if there is a way, tool, method or any service that one can you to assess the amount of mapping that has been done for a region so as to plan further mapping. For example, i want to plan how to complete road mapping on OSM for Kano State, Nigeria, is there any tool or service or method i can use to assess the amount of work has been done already for Kano? Simply put may be any service that can give statistic of percentage completion or summary of work done  for road or other features to be mapped.

 

I understand there is a similar service on Task Manager but i need such from the OSM database side because on Task Manager, one can create multiple tasks for e.g Kano which does give you the true picture.

 

Will be expecting your assistance.

 

Samuel Aiyeoribe


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Re: GAP Analysis or Regional OSM Mapping Assessment

Samuel Aiyeoribe-2
Hi Russell,

No. I haven't heard from anyone yet. 

Samuel

Sent from my BlackBerry 10 smartphone.
From: Russell Deffner
Sent: Monday, 22 June 2015 17:35
To: 'Samuel Aiyeoribe'; 'HOT Openstreetmap'
Subject: RE: [HOT] GAP Analysis or Regional OSM Mapping Assessment

Hi Samuel,

 

I was gone all last week, so just seeing this email – did someone already answer you?

 

=Russ

 

Russell Deffner

Email: [hidden email]

US Mobile/SMS/WhatsApp: +1-970-217-4195

OSM/Skype: russdeffner

Humanitarian OpenStreetMap Team (HOT)

Web | Wiki | Blog | Contact | Donate

 

 

From: Samuel Aiyeoribe [mailto:[hidden email]]
Sent: Wednesday, June 17, 2015 4:04 AM
To: HOT Openstreetmap
Subject: [HOT] GAP Analysis or Regional OSM Mapping Assessment

 

Hello House,

 

I would like to know if there is a way, tool, method or any service that one can you to assess the amount of mapping that has been done for a region so as to plan further mapping. For example, i want to plan how to complete road mapping on OSM for Kano State, Nigeria, is there any tool or service or method i can use to assess the amount of work has been done already for Kano? Simply put may be any service that can give statistic of percentage completion or summary of work done  for road or other features to be mapped.

 

I understand there is a similar service on Task Manager but i need such from the OSM database side because on Task Manager, one can create multiple tasks for e.g Kano which does give you the true picture.

 

Will be expecting your assistance.

 

Samuel Aiyeoribe



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Re: GAP Analysis or Regional OSM Mapping Assessment

Russell Deffner-3

Ok, sorry about that Samuel; I think there was probably some difficulty understanding the question, and it is difficult to answer.

 

If I understood correctly, you are looking to analyze the ‘completeness’ of features like the road network.  This can be done with Geographic Information System applications, but I don’t do that type of work much anymore, so I won’t pretend I can give you good instructions.  However, there may be a larger issue – in order to do that analysis you would need a complete dataset to compare the OSM dataset against.  Maybe there is Nigeria government data, but in general if you had a figure, such as “there are X million kilometers of road in Kano State – then you could compute the amount in OSM and have such figure.  Even more difficult, but not impossible – there is something similar for comparing united states tiger data to OSM – is to actually be able to show on a map where there is ‘gaps’.

 

Hope that helps and/or gives a better idea for what you are looking for and maybe who can help you achieve that.

=Russ

 

From: [hidden email] [mailto:[hidden email]]
Sent: Monday, June 22, 2015 10:53 AM
To: Russell Deffner; 'HOT Openstreetmap'
Subject: Re: [HOT] GAP Analysis or Regional OSM Mapping Assessment

 

Hi Russell,

 

No. I haven't heard from anyone yet. 

 

Samuel

 

Sent from my BlackBerry 10 smartphone.

From: Russell Deffner

Sent: Monday, 22 June 2015 17:35

To: 'Samuel Aiyeoribe'; 'HOT Openstreetmap'

Subject: RE: [HOT] GAP Analysis or Regional OSM Mapping Assessment

 

Hi Samuel,

 

I was gone all last week, so just seeing this email – did someone already answer you?

 

=Russ

 

Russell Deffner

Email: [hidden email]

US Mobile/SMS/WhatsApp: +1-970-217-4195

OSM/Skype: russdeffner

Humanitarian OpenStreetMap Team (HOT)

Web | Wiki | Blog | Contact | Donate

 

 

From: Samuel Aiyeoribe [[hidden email]]
Sent: Wednesday, June 17, 2015 4:04 AM
To: HOT Openstreetmap
Subject: [HOT] GAP Analysis or Regional OSM Mapping Assessment

 

Hello House,

 

I would like to know if there is a way, tool, method or any service that one can you to assess the amount of mapping that has been done for a region so as to plan further mapping. For example, i want to plan how to complete road mapping on OSM for Kano State, Nigeria, is there any tool or service or method i can use to assess the amount of work has been done already for Kano? Simply put may be any service that can give statistic of percentage completion or summary of work done  for road or other features to be mapped.

 

I understand there is a similar service on Task Manager but i need such from the OSM database side because on Task Manager, one can create multiple tasks for e.g Kano which does give you the true picture.

 

Will be expecting your assistance.

 

Samuel Aiyeoribe




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Re: GAP Analysis or Regional OSM Mapping Assessment

Rafael Avila Coya
In reply to this post by Samuel Aiyeoribe-2
Hi, Samuel:

I've actually seen this email a couple of days ago, but didn't have time
to answer. I am also sorry for the delay.

As Russell says, unless we have another database to compare against, I
can't see a reliable way to get an estimate of the completion percentage
of roads already mapped and those still missing (but that doesn't mean
there aren't!). The only database I know of is the GRoads one [1], but I
think Kano state has already more roads mapped that GRoads, and probably
any other map. But this idea could be applied to the poorly mapped
Central and South Nigeria.

Séverin Menard has opened at least two projects in the TM to complete
the road network taking GRoads as a reference, one for Mali [2] and
another for Central African Republic [3]. The goal is not only to
complete the road network, but also to timestamp all segments using
Bing/Mapbox imagery. I think this idea could be used in Nigeria too, at
least for those still-poorly-mapped states.

Kano state road network was mapped through a TM job [4] about a year
ago. In my honest opinion, I wouldn't use that same job for validation,
but I would rather create a new one to validate, with less and bigger
task tiles. As I have been mapping hard that area, I give you my
opinion: the number of roads and tracks for Kano state is quite high
already, but you can find some settlements here and there that aren't
connected. Also, some tagging should be corrected (add surface to some
highways, and correct the category of others).

The main purpose of a road network is to connect all settlements in an
area. For that reason, I think the new jobs of importing health
facilities and settlements for Borno State [5]]6] is giving better
results. The reason is that in those two projects, contributors are
asked to map the road access to all those health facilities and
settlements, making the task more comprehensive and consistent, as they
will have to make sure they don't leave any settlement nor health
facility behind. I have still to do some more validation in those two
projects, but my understanding is that they are giving better overall
results. I had already this idea when the Kano project was going on, but
there were too many things to do at the same time, unfortunately.

Cheers,

Rafael.

[1]
http://sedac.ciesin.org/data/set/groads-global-roads-open-access-v1/data-download
[2] http://tasks.hotosm.org/project/813
[3] http://tasks.hotosm.org/project/783
[4] http://tasks.hotosm.org/project/474
[5] http://tasks.hotosm.org/project/946
[6] http://tasks.hotosm.org/project/937

On 17/06/15 12:03, Samuel Aiyeoribe wrote:

> Hello House,
>
> I would like to know if there is a way, tool, method or any service that
> one can you to assess the amount of mapping that has been done for a
> region so as to plan further mapping. For example, i want to plan how to
> complete road mapping on OSM for Kano State, Nigeria, is there any tool
> or service or method i can use to assess the amount of work has been
> done already for Kano? Simply put may be any service that can give
> statistic of percentage completion or summary of work done  for road or
> other features to be mapped.
>
> I understand there is a similar service on Task Manager but i need such
> from the OSM database side because on Task Manager, one can create
> multiple tasks for e.g Kano which does give you the true picture.
>
> Will be expecting your assistance.
>  
> Samuel Aiyeoribe
>
>
>
> _______________________________________________
> HOT mailing list
> [hidden email]
> https://lists.openstreetmap.org/listinfo/hot
>

--
Twitter: http://twitter.com/ravilacoya

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