#2489 - Missing Maps: Zambia Malaria Elimination 1

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  • Author: HOT and DigitalGlobe
  • Requesting Organizations: Multiple

This project supports multiple efforts to eliminate malaria and other interventions. Your mapping contribution will help prevent the suffering and loss of life this disease causes!

HOT and DigitalGlobe have teamed up to identify and map populated places in an area of interest covering over 500,000 square kilometers in Southern Africa, Southeast Asia and Central America to support the Clinton Health Access Initiative's malaria program.

As part of the Visualize No Malaria campaign, PATH, DigitalGlobe, Mapbox and HOT have joined forces to help map building structures in critical malaria catchment areas in Zambia’s Southern Province and support malaria elimination efforts in Zambia.

This project is to trace buildings, and missing major roads, in this region of Zambia. Please use the Imagery provided by DigitalGlobe's Maps API Premium Imagery (it should load automatically in the iD and JOSM editors). This imagery may be offset, see instructions for details.

The Visualize No Malaria team can use this information along with other geographical factors to predict the likely location and timing of malaria outbreaks. These predictive models help community health workers and the Ministry of Health to get resources where they are needed the most and contain malaria before it erupts.

The Missing Maps project aims to map the most vulnerable places in the world (affected by humanitarian crises: disease epidemics, conflict, natural disasters, poverty, environmental crises). Building on HOT's disaster preparedness projects, the Missing Maps tasks facilitate pre-emptive mapping of priority countries to better facilitate disaster response, medical activities and resource allocation when crises occur.

Created by russdeffner - Updated - Priority: low


Entities to Map
Mostly buildings, major roads if necessary
Changeset Comment
#hotosm-project-2489 #MissingMaps #EliminateMalaria #VisualizeNoMalaria #Zambia
When saving your work, please leave the default comment but add what you actually mapped, for example "added buildings and a residential road".


Project Specific Mapping Notes

  • Some of these squares may already be partially or fully mapped, please review and map missing features if needed, fix up the existing mapping, or just mark it "Done" if already complete.
  • Please connect up roads that are not connected to the main network or nearby roads.
  • Please disconnect roads that are attached to landuse=residential areas and draw them into the settlements and connect them to other roads that enter the settlements

Imagery Notes

  • Please use the imagery provided by DigitalGlobe's Maps API Premium Imagery, align it to existing features or GPS traces where applicable, use Bing where available for comparison.
  • View this video demonstration of imagery alignment in iD
  • If the imagery does not load, use this TMS service: https://api.mapbox.com/v4/digitalglobe.2lnp1jee/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNpd3A2OTAwODAwNGUyenFuNTkyZjRkeWsifQ.Y44JcpYP9gXsZD3p5KBZbA


  • Please accurately outline all the buildings you can find. The outline should be for the full size of the building even if it is partly covered by trees in the imagery.
  • Most buildings are rectangular, after drawing the outline, use the 's' key in the iD web editor to "square" the corners.
  • For circular buildings there is the 'o' key in the iD editor to create a circular structure.
  • Many buildings are very close, but do not actually touch each other, try to map them close to each other without letting them connect or share nodes with each other, roads or residential area outlines. In the iD web editor, holding down the "alt" key will keep nodes of "snapping" to each other and accidentally connecting.
  • In the iD web editor, the first time you map a building you will use the "Building Features" category and then at the top of the list select "Building" again, this is the most generic building tag we can use as we almost never can tell the more specific use of any building from imagery alone.

If you have personal knowledge of a building, please add that information to the building, like the name or type of building (hospital, school, gas station, etc)

Road Mapping

You will most often use the following "Road Features" (iD Web Editor):

  • Primary Road, Secondary Road, Tertiary Road - Long, major roads that connect larger towns and cities (many of these are already mapped)
  • Minor/Unclassified - This is for roads that connect small villages and settlements (most commonly used road tag)
  • Residential Road - These are roads that are in settlements but only are used for access to houses and buildings.
  • Service - These are roads that connect individual structures to Residential or higher classification roads.
  • Unmaintained Track Road - This is for roads that only lead to farm fields or forests, tagged as highway=track. They do not connect settlements or residential areas. (Not required for this project, but if you want to map you can)

Consult Highway Tag Africa Wiki for more details and examples.

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