intro to gis & the course
Post on 23-Feb-2016
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Intro to GIS & the Course
Ryan SOC128 Spring 2008
Three Points
• What is GIS?• Why is mapping useful?• How does computer mapping work?
A Data Table
ID Name Age Credits Car? Zip1 Ali 19 4.25 Y 946022 Bella 21 5.0 N 946133 Chris 17 8.5 Y 946044 Danny 26 4.0 Y 946135 Evelyn 24 16.75 N 94602
RASTER PATTERN
OBJECT COLOR SHAPE
1 White Cloud-swirl
2 White Cloud-swirl
3 White Cloud-swirl
4 Purple Rectangle
5 Blue Hill-Shape
6 Brown Tree-Shape
7 Light Blue Village-Shape
8 Gold Circle
9 Gold Circle
10 Gold Circle
11 Gold Circle
12 Gold Circle
13 Gold Circle
14 Gold Circle
15 Gold Circle
16 Gold Circle
17 Gold Circle
18 Gold Circle
19 Gold Circle
Start Here
Follow the arrows (vectors) from vertex
to vertex
Layers in a Vector Graphic
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