Tagging
From Map Kibera
Mapping in Africa, in Kibera, in rural areas, has revealed many features for which there is currently no clear existing tagging scheme or cartography. Especially in Kibera, this has resulted in tagging that is inconsistent and incomplete across the area.
Contents |
Process
- Focus on thematic areas one by one (water, health, NGOs, etc)
- Examine existing tagging schemes in Kibera. A tag report is generated at http://files.maps.jsintl.org/tags.html and http://files.maps.jsintl.org/tags.mwatate.html. Clicking on the link for a tag will download OSM data that you can open in JOSM to work with more directly. Pay attention especially to NOTES, as these are often where the details on the actual structure are located.
- Open all downloaded layers in JOSM together, and then Merge into a single layer ... this will remove objects that appear in multiple layers.
- Decide on a consistent tagging scheme for the theme.
- Fix manually is small in number. Otherwise document, and later on will explore automated methods to correct, and plan re-survey.
- Document any new features below.
- Once complete and consistent, new features will be presented to OSM community for adoption.
References: http://wiki.openstreetmap.org/wiki/Map_Features http://wiki.openstreetmap.org/wiki/Proposed_features
Tagging Review in Kibera
Health
User:Mikel reviewed health related tags on March 21, and uploaded changes to http://www.openstreetmap.org/browse/changeset/4187666
Pre-existing Tags
These are all the health related tags.
- amenity=pharmacy
- amenity=hospital
- dispensing=clinic
- dispensing=yes
- shop=chemist
- dispensing=chemist
- notes=clinic
- dispensing=Chemist
- notes=Chemist
- operator=Amref
- notes=Clinic
- notes=this is a laboratory mainly serving the senye clinic in soweto west
- note=also clinic and school
- dispensing=*
- amenity=doctors
- NOTES=CLINIC
- Health=*
- FIXME=this is a laboratory mainly serving the senye clinic in soweto west
fixes
- fix capitalization
- removed dispensing=clinic/chemist/Chemist. only yes/no is valid value
- removed erratic tags that did not apply
- unifying to note=* and fixme=* from all capitalization and plural variants
- removed Health=*
- where clear, removed duplicates. otherwise added fixme to disambiguate.
thoughts
- amenity=clinic is more appropriate than amenity=hospital BUT this tag is not rendered.
- VCT centers not collected at a all
- amenity=pharmacy vs shop=chemist. this is a subtle difference that needs clearing up
- opening_hours needs verification
- laboratory services ... needs new tag?
- herbalists? ... needs new tag
- much confusion currently between clinic and pharmacy and chemist. For instance, called clinic, tagged as pharmacy
- can use comparison against other data sources ... MSF map, Kenya Health facilities, etc (http://mapkibera.org/wiki/index.php?title=Mapping_Users_Needs#AIDS_and_Health_Services, http://mapkibera.org/wiki/index.php?title=Data_Sources#Project_Maps)
- JOSM ... layer editor
http://wiki.openstreetmap.org/wiki/Proposed_features/Healthcare proposes some distinguish features between services
General editing tips
- need to verify completeness and correctness ... does this exists, proper name/spelling, location, position (correct side of road), tags,
- re-emphasize gps button fiddlyness
- when editing, they should look out for existing features, not just re-add
- possible to have josm segment types of features, layers?
Educational Facilities
Pre-existing Tags
These are all the educational related tags.
- amenity=school
- name="usually contains a name of the school, kindergarten, academy, etc."
- name=Olympic Academy/Church
- notes=school
- notes=NGO
- notes=School
- notes=school within a church
- NOTES=school
- note=private
- note=Mashimoni Ushirika Pri
- FIXME=Must this be "Old" instead of "Oid"?
thoughts
- fix capitalization, spelling, etc.
- kindergartens schould have different tags than schools -> look at Unified Tagging on Kibera Map
New Tags
Cattle Dip
- description: it holds water and usually some sort of tick-killing substance (ticks can be a big problem in rural communities - killing livestock); used for microbes clean up
- current tagging scheme: has no current tagging scheme
- some potential alternatives
- Cattle Dip
Water Infrastructure
- water intakes - from where water usually originates; natural or built
- water tanks - where water is stored (water storage tanks or reservoirs),
- water points - different important water points (ex.: water distribution points, water supply reservoirs, cattle tanks, livestock water tanks in dry areas, etc.)
- current tagging scheme: everithing is tagged as man_made - water_works
- Water Intake
- Water Tank
Community meeting points
- traditional meeting place of the elders - where community leaders come and discuss community relevant issues, settle disputes, etc.
- current tagging scheme: village_green
- some potential alternatives: needs a more refined way of tagging as it represents one of the most significant areas in a community
- Traditional meeting place of the elders in Wongonyi
Public buildings
- chief's office, office of a community leader (example: in a local market place)
- current tagging scheme: amenity - public_building
- Chief's House
Sacred places
- areas which have special (mostly spiritual) meaning to a local community and are used for ancestor worship, spirit communication and agricultural sacrifices, etc.
- current tagging scheme: has no current tagging scheme
Unified Tagging on Kibera Map
Introduction
This is the suggestion of a tagging scheme on a map of Kibera. Different elements are divided into attributes. Main attributes are represented and described. Some exceptions are also represented and redundant attributes are preserved for further examination.
Element is the object of inquiry (ex. school, place of worship, etc.). It is represented by attributes – descriptive representations.
Elements
Educational Facilities
These elements represent kindergartens, schools (primary, secondary, academy …) and other educational facilities (youth polytechnics …).
Attribute table (schools):
| Atribute | Description |
|---|---|
| amenity | school |
| name | Name of the school or educational facility. |
| note | If there is some particularity (ex. private, school is also a church or an NGO). |
Attribute table (kindergarten):
| Atribute | Description |
|---|---|
| amenity | kindergarten |
| name | Name of the kindergarten. |
| note | If there is some particularity (ex. private, kindergarten is also a church or an NGO). |
