GIS 200 Introduction to GIS Buildings. Poly Streams, Line Wells, Point Roads, Line Zoning,Poly MAP SHEETS.
Published byModified over 4 years ago
Presentation on theme: "GIS 200 Introduction to GIS Buildings. Poly Streams, Line Wells, Point Roads, Line Zoning,Poly MAP SHEETS."— Presentation transcript:
GIS 200 Introduction to GIS Buildings. Poly Streams, Line Wells, Point Roads, Line Zoning,Poly MAP SHEETS
Geographic Related to spatial locations on the surface of the earth; referenced by coordinates. Information Data transformed via structuring, formatting, conversion, modeling; value added data System Interrelated parts that operate independently and together to achieve objectives/functions What is GIS?
GIS (Geographic Information System): computer information system that can input, store, manipulate, analyze, and display geographically referenced (spatial) data to support decision making processes.
Tools for a GIS Hardware - Computer - Printer / Plotter - Digitizer - Scanner GIS Desktop Software CAD Software Multimedia - Photos, Video, 3D Models World Wide Web GIS Personnel
GIS Data Raster Images - grids “pixels”, cells, rasters satellite images digital aerial photos Vector features: points, lines & polygons attributes: size, type, length, etc.
GIS Data Sources Digitized and Scanned Maps purchased, donated, free (Internet) created by user Data Bases – Tables of data GPS (Global Positioning Systems) Field Sampling of Attributes Remote Sensing Imagery & Aerial Photography
Conventional Information Systems Answer the following questions: - Who ? - What ? - When ? - Why ? - How ?
GIS answers the following Location: What is at...? Condition: Where is it? Trends: What has changed since...? Patterns: What spatial patterns exist? Modeling: What if…? Exploring data using GIS turns data into information into knowledge
Data Data Data Overlay different spatial data Must use same coordinate system Location Data How Many? – What Kind? – Where? Scale of Data Global to Local Data Presentation Words, Charts, Graphs, Tables, Maps, Photos
Assignments due for week 2: Lo & Yeung textbook: Chapter 1 GIS Tutorial workbook: Appendix B, Installing data and software Work through Tutorial 1 Free on-line course, Getting Started with GIS http://training.esri.com/acb2000/showdetl.cfm? DID=6&Product_ID=915 Download/install (StartGIS.exe) and work through Module 1 (no homework to turn in).