#3453 - Arua District Part 1

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Author: Missing Maps / HOT Uganda Requesting organization: HOT Uganda Priority: Medium * Imagery: Digital Globe

An escalation of violence in South Sudan since July 2016 has lead to a large population movement into the north of neighboring Uganda. An estimated rate of between 2,000 and 3,000 displaced persons cross the border into Uganda each day. In a rapidly developing situation such as this, it is vital that accurate and up-to-date mapping information is available to allow the ERU to respond more effectively and efficiently.

Created by kiggudde - Updated - Priority: medium

  Instructions

Changeset Comment
#hotosm-project-3453#mapgive#missingmaps
When saving your work, please leave the default comment but add what you actually mapped, for example "added buildings and a residential road".
Imagery

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For this task, mappers are being asked to map buildings and the road network across the area of the camp.

The imagery will show buildings as a mixture of ‘formal’ constructions, tents and other structures; the road network will also be a mixture of ‘formal’ tracks (laid out in a grid system), and less paths.

To help you in your mapping, please look at these images. The photos shows examples of what some of the structures and roads may look like.

Shelters

You will need to map 2 different kind of shelters, please see here.

  • In the ID editor: label the area as “Building”, then correct for right angles with the “S” key

  • In JOSM: from the Tags/Memberships window, click “Add” and use the tag “building=yes”; then correct for right angles using the “Q” key

Road network

Roads should be identified with respect to their economic and social role, not in terms of their visibility/viability. The best way to approach this is to use the existing road network and its connections to towns and villages.

  • Inside of the camp please use highway=Tertiary (in ID : choose "Tertiary road")

  • Outside of the camp please use highway=unclassified : or "Minor/Unclassified Road" : for those roads connecting villages and hamlets “highway=path” for roads that connect homes and are too narrow to have a 4 wheel drive vehicle to pass

You should not have to use :

  • highway=primary, highway=secondary : these are the main roads that connect towns.

  • highway=track (roads or paths which connect fields only)

The most important thing is to maintain consistency in the network. Every road should connect to another of greater importance and not to isolated roads.

See the Wiki page Highway Africa Tag for more information on the cartography of route networks in Africa. For a concrete example, see the cartographic guide for route networks in S. Kivu

Imagery details:

This imagery is from DigitalGlobe’s WorldView 3. The imagery has been orthorectified for terrain corrected geographic precision. Additionally, the imagery has been contrast stretched using a custom stretch and processed into a Tiled Map Service (TMS) for performance. The image you are using was taken on 26th Jan 2017.

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