[Imports] Import of 10 administrative boundaries in northern Nigeria

[Frank Salet]

Hi list,

eHealth Africa Foundation has different kind of geographical data that has
just been released with an ODbL compatible license. The license is the HOT
letter of authorisation that many of you probably know already.
Some data is probably very interesting to be imported. Among these data, we
have the boundaries of all Local Government Areas (LGA's) and their Wards
for 10 states of North Nigeria (Nigeria is divided in 36 states plus the
Federal District of Abuja, each state divided further in a total of 774
LGA's (equivalent to districts), and each LGA is further divided in between
10 to 15 Wards (equivalent to municipalities)). The 10 states are the
following: Kano, Borno, Yobe, Sokoto, Zamfara, Katsina, Jigawa, Bauchi,
Kebbi and Kaduna.

The current boundaries in OSM, the ones that origin from MapLibrary, are
assessed by the mapping specialists of eHealth Africa, and are found to be
incorrect and not complete. For example, the boundary of Kano state is
missing a large area in the south, where three LGA's are mistakenly given
to Kaduna state. Regarding the LGA's we noticed that only for a  few of
them a polygon was drawn.

The eHealth Africa data is originally in Shapefile format. It  is easily
converted to .osm with the JOSM OpenData plugin.  With an ad-hoc script we
can convert the areas to relations, and add the corresponding tags. Then,
we would import these data state by state, replacing the existing
Maplibrary data. All the process would be carefully validated before being
uploaded to the OSM database. As there are 10 states involved, the import
would therefore consist of 10 changesets in total.

We have written a wiki explaining the process, and we would appreciate
comments/evaluation from the community before we proceed with the import:
https://wiki.openstreetmap.org/wiki/Import_Nigeria_eHealth_Africa_Boundaries

*About eHealth Africa Foundation*
eHealth Systems Africa Foundation (eHealth Africa) is a nongovernmental
organization (NGO) dedicated to improving health care in developing
countries through strengthening health workers and the systems that support
them. eHealth Africa works towards this goal by creating sustainable
eHealth and mHealth systems, providing technology infrastructure,
performing training and capacity building workshops, publishing research on
our work in Africa, and by providing consulting and support for other
organizations working on health care in Africa. Based in Santa Ana,
California, in the United States, eHealth Africa's main office is located
in Kano, Nigeria.

*About the polio eradication programme*
eHealth Africa is supporting polio eradication in Northern Nigeria. A GIS
is being deployed in Nigeria to help health workers collect data and target
specific areas for immunization efforts in the fight to eradicate polio.
High resolution satellite imagery has been used as a basis to map the
communities. This work is currently mapping communities in ten Northern
States. Subsequently vaccination teams will use the GIS to locate the
communities. Using GPS technology the whereabouts of the vaccination teams
are monitored and inputted into GIS to cross-check the mapped communities
with the visited settlements. By doing that the GIS is updated with
"missed" communities and the vaccination teams are guided.

*About the geo-data*
In 2011 the programme started in the 8 northern states of Nigeria (namely
Kano, Borno, Yobe, Sokoto, Zamfara, Katsina, Jigawa and Kebbi), and the
area has been expanded after that with another 2 states (namely Bauchi and
Kaduna). Using high resolution satellite imagery and manual extraction of
the features currently most of the states are finished mapping, while the
rest is being worked on by the GIS department of eHealth Africa (consisting
of around 20 GIS specialists). The mapping activities are focused on the
collection and marking of each and every settlement in the whole area,
since that information is required to provide polio immunization to the
complete population. Besides mapping and naming all the settlements, the
administrative boundaries are mapped as well as the roads, rivers, water
bodies, health facilities, schools, mosques, wells, markets and more.

Kind regards,

-- 
*Frank Salet*

GIS Manager
*eHealth Systems Africa*

www.eHealthAfrica.org
25 Race Course Road, Kano, Nigeria
mobile: (NG) 0809-9850211
            (US) 714-627-9289
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/imports/attachments/20140425/7ec2a36e/attachment.html>