http cgis hbg psu eduCGIS20 wor kshopsIntro20 to20

http: //cgis. hbg. psu. edu/CGIS%20 wor kshops/Intro%20 to%20 GIS. ppt

Introduction to Geospatial Information Science A one-day, hands-on workshop to introduce users to the basic concepts of GIS This one-day, hands-on workshop introduces the basic concepts of geospatial information science (GIS). It will present fundamental geographic and cartographic principles that are the foundation of GIS and current state-of-the-art information technology tools that bring GIS to users’ desktops. The workshop will include hands-on use of Arc. View 9. 1 GIS software and various geospatial databases. Attendees will come away from the workshop with a general understanding of the science and technology behind GIS and a basic skill set for making maps with Arc. View 9. 1.

Time Topic/activity 08: 30 - 09: 00 Check-in 09: 00 - 09: 15 Introduction and overview of geospatial information science 09: 15 - 09: 30 Spatial representation: maps, coordinate systems, projections, scale 09: 30 - 10: 00 Spatial features: vectors (points/lines/polygons); rasters; attributes 10: 00 - 10: 20 Spatial topology: lines-nodes-segments; TIGER 10: 20 - 10: 30 Break 10: 30 - 11: 00 Introduction to GIS and Arc. GIS 9 overview 11: 00 - 12: 00 Arc. GIS 9: Basic skills and lab exercises 12: 00 - 01: 00 Lunch 01: 00 - 02: 20 Arc. GIS 9 more basic skills and lab exercises 02: 20 - 02: 30 Break 02: 30 - 04: 00 Arc. GIS 9 intermediate skills and lab exercises 04: 00 - 04: 30 Dismissal and open lab time

GEOSPATIAL INFORMATION SCIENCE Geography � Cartography and Surveying � Photogrammetry � Remote Sensing � Geographic Information Systems (GIS) � Geocoding/geoprocessing � Global Positioning System (GPS) � IT Infrastructure and Human Resources �

GEOSPATIAL FOUNDATION CONCEPTS SPATIAL REPRESENTATION Maps Coordinate systems Projections Scale SPATIAL FEATURES Vectors: points-lines-polygons Rasters Attributes SPATIAL TOPOLOGY lines-nodes-segments TIGER

Spatial Representation Maps �USGS Coordinate systems �Dana Projections �Dana The “Dana” websites linked on this slide were developed by Peter H. Dana, Department of Geography, University of Texas at Austin, 1995. These materials may be used for study, research, and education in not-forprofit applications. If you link to or cite these materials, please credit the author, Peter H. Dana, The Geographer's Craft Project, Department of Geography, The University of Colorado at Boulder. These materials may not be copied to or issued from another Web server without the author's express permission. Copyright © 1999 Peter H. Dana. All commercial rights are reserved.

MAP SCALE Think of map scale the following way. If you have an 8. 5’’ x 11” paper map… Larger scale: (e. g. 1: 50, 000 or 1” = 0. 789 miles) Shows less area and more detail

1: 50, 000 scale map of Harrisburg

MAP SCALE Think of map scale the following way. If you have an 8. 5’’ x 11” paper map… Larger scale: (e. g. 1: 50, 000 or 1” = 0. 789 miles) Shows less area and more detail Smaller scale: (e. g. 1: 500, 000 or 1” = 7. 89 miles) Shows more area and less detail

1: 500, 000 scale map of Harrisburg

MAP SCALE Think of map scale the following way. If you have an 8. 5’’ x 11” paper map… Larger scale: (e. g. 1: 50, 000 or 1” = 0. 789 miles) Shows less area and more detail Smaller scale: (e. g. 1: 500, 000 or 1” = 7. 89 miles) Shows more area and less detail

SPATIAL FEATURES Vectors (points-lines-polygons) Rasters Attributes: Feature Point Line Polygon Feature class Water wells State roads Counties Attribute Depth to water Traffic volume Total population

SPATIAL TOPOLOGY: lines-nodes-segments 2 1 3 A B C E D 5 4

SPATIAL TOPOLOGY: lines-nodes-segments 2 1 3 A B C E 4 D 5

SPATIAL TOPOLOGY: lines-nodes-segments 1 2 Seg “A” A 3 B C E 4 D 5

Relational Database Tables Segments Record ID Street Seg-A Roosevelt Seg-B …. Seg-C …. Seg-D …. Seg-E …. Fnode Node-1 Tnode Node-2 Lfadd 100 Rfadd 101 Join to Nodes Record ID Node-1 Node-2 Node-3 Node-4 Node-5 Latitude 41. 90433 41. 90567 …. …. …. Longitude 76. 23594 76. 23407 …. …. …. . Ltadd 198 Rtadd Lzip 199 17111 Rzip 17112