An example of a topological map of Uganda. Image credit babakfakhamzadeh.com
ZIMSEC O Level Geography Notes: Transport: Topological Maps
- A topological map is one where straight lines are drawn to replace winding routes of transport networks.
- These straight lines may replace roads, rails or waterways but they are always drawn to link nodes.
- Topological maps have certain advantages and disadvantages as they are cartographic (geographic) tools of data presentation.
- In geography and geology, a topological map is a type of diagram that has been simplified so that only vital information remains and unnecessary detail has been removed.
- These maps lack scale, and distance and direction.
- They are subject to change and variation, but the relationship between points is maintained.
- The name topological map is derived from topology, the branch of mathematics that studies the properties of objects that do not change as the object is deformed.
- It retains useful information despite bearing little resemblance to the actual layout of the underground system.
| Advanages | Disadvantages |
|---|---|
| Easy to constuct | straight lines ignore physical factors affecting routes |
| Easy to process | with higher network densities, the lines criss-cross each other and are difficult to count |
| Quick visual impression of connectivity | some nodes no longer become visible |
| Easy to analyse |
To access more topics go to the O Level Geography Notes page
