Import Nigeria eHealth Bauchi Health Facilities

From OpenStreetMap Wiki
Jump to navigation Jump to search


The goal is to import 1,096 health facilities collected by eHealth Africa for the Bauchi State, Nigeria.


  1. Preparation, discussion: This import is almost identical to the Kano State one, so we don't expect any issues.
  2. Import - expected to start on Monday, 1st of September 2014.

Import Data

Data description

The datasets are drawn and generated by eHealth Africa in the course of their mapping activities in Northern Nigeria. The organisation has performed data collections in the entire area and remote tracing using aerial imagery. For the Bauchi state, a Q&A has been performed to double-check the accuracy of this data.

The original dataset consists of 1,096 health facilities entries, in .csv format.

The dataset contains several field attributes, like the name of the facility, the health facility type, the ward, LGA and state to which it belongs and the ownership.


ODbL Compliance verified: YES
eHealth Africa has given full authorization for the use of their data with the standard authorization document of the Humanitarian OpenStreetMap Team (HOT). A scan of the document can be found here.

Import Type

The import will be done manually through one job in the HOT Tasking Manager (TM), having for each task of the job only the health facilities nodes that lie within the task tile, in a similar way as it was done for the Central African Republic UNICEF import. For each task, we will first check the eHealth nodes to be imported, and second we will assess the data already in the OSM database against the eHealth Africa one for the merging of the eHealth data into the OSM database. The OSM mappers who will contribute to this import job will follow a detailed workflow to accomplish this.

Data Preparation

Data Reduction & Simplification

The data is originally in csv format, in only one file for the whole Bauchi state. Some internal eHealth Africa codes were deleted for being not relevant for the import.

Tagging Plans

Each health facility will have the following tags:

eHealth Africa key OSM tag Observations
All objects amenity=hospital
All objects
Sources source:date=* Some have been collected in 2013 and others in 2014
StateName addr:state=*
LGAName addr:district=* Local Government Area (LGA)
WardName addr:municipality=* Ward
WardName, LGAName, StateName addr:full=*
HthFa_Name name=*
Alternative name alt_name=* Only some facilities have an alternative name
HthFa_Type health_facility:type=* Health Post will be translated by dispensary, Primary Health Centre by health_centre and General Hospital by hospital.
HthFa_Ownership operator:type=* Only two values: public or private

Changeset Tags

We will use the following changeset tags:

Data Transformation

Data is in csv format. We just process the csv file and convert it to osm format with a gawk script.

Data Merge Workflow

Team Approach

Import will be undertaken by experienced OSM mappers, using a import specific OSM user account, following a workflow and working through a HOT Task Manager job similar to the ones set for the import of UNICEF health facilities, schools and water resources in Central African Republic.


The import will be discussed in the import list and in the Talk-Ng list.


You can see the workflow here.

Reverse plan

In case of any trouble, JOSM reverter will be used.


The location of the eHealth nodes is generally correct, but following the already mentioned workflow, we will place the nodes in the exact position. For example, for a hospital compound, we will place the node more or less at the centre of it, in case it is not centered.

If other health facilities are encountered, they will be compared with the import ones and merge the data in the best possible way, keeping all info that the old ones may have. In case of doubt, a fixme tag will be placed, the issue will be reported through the comment of the task (tile) of the TM job, and the user that uploaded the old health facility node would be eventually contacted if needed.