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