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Zoom In or Out Use Case Specification

Identifier
UC13(For requirements 13)

Actors
Students, Researchers, GIS-Team Members, Professors

Goal
Users will be able to choose the zoom in option in a section of a map view to see a map of the data for the next finest level of geographical boundaries available for the data source.

Preconditions
Actor need to have an account in the DEIS registration system..

Post conditions
None

Assumptions
1. The actor can use the iDataMap system

Frequency
Every time a map is created

Basic Course

1. High level user log on to the site, regular user reach the site directly
   1. User choose all the required mapping variables.
   2. User get the desired map on the screen.
   3. User click the Zoom in icon to see the details of the map.
   4. User click the Zoom out icon to see the whole image of the map.
   5. After that, user can do more operations to store, print, and email the map.

Alternate Course A: none

Condition: None

Included Use Cases : None.

Extended Use Case : None.

Issues : None

Decisions (List any important decisions made during the development of this use case)

Change History

Date	Version	Description	Author
Nov 18, 2002	1.0	Initial Draft	Tiegang Han
Jan 18th, 2003	1.0	Second version	Tiegang Han

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