1. UNIT 3 – MODULE 8: Output

2. OUTPUT Most common GIS output is a map. Many of these maps will be thematic. Other maps will be topographic. Maps clearly communicate spatial information, which can be difficult to represent. Credit: UCLA

3. GIS MAP DESIGN When designing GIS maps, you have complete control in manipulating the map components. There are several map components: – Title – Labels – Legend – Compass – Numeric Scale – Reference Grid – Graphical Scale – Supplementary Information Credit: Allan Cousins

4. SYMBOLS Will be shown as points, lines or areas. They can differ in several ways, including size, shape and density. A symbol’s shape & pattern should bear resemblance to the real-world feature being represented. Credit: www.esri.com

5. LEGEND/KEY Provides necessary information to understand the map. Without one, it would be difficult to interpret what the map is communicating. Every GIS map must have a legend/key. Credit: Knox County, Maine

6. TABLES & CHARTS Another important form of GIS output are the tables & charts that contain spatial and non- spatial attribute information. Sometimes tables & charts will do a better job at conveying information than a map. This is particularly true of numerical & character information that’s linked to spatial objects. Credit: UC Santa Barbara

7. MAP OUTPUT MISTAKES There are many mistakes to avoid when developing a GIS map: – Meaningless Title – No Direction Indicators – Poor Background Color – No Metadata Information – Poor Symbolism for Features – Legend Items Not Present on Map Bottom line: make sure the map makes sense and is easy to understand.

8. CONCLUSION When designing a GIS map, remember that someone who’s looking at your map will most likely know little about GIS maps. Try to design a map that easily communicates what you’re trying to show. Map complexity can lead to confusion, so only show the most pertinent information. Credit: www.viewsoftheworld.net