Instructor: Dr. Chunling Liu

Slides:

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Presentation transcript:

Instructor: Dr. Chunling Liu chunling98@gmail.com INTRO to GIS Instructor: Dr. Chunling Liu chunling98@gmail.com

www.clarklabs.org

Lecture 1 GIS and ArcGIS

What is GIS Geographic Information Systems Computer tools Database: Spatial data---addresses Georeferenced--- x, y coordinates

GIS Components Hardware platform: mainframe, PC Software: ArcGIS, IDRISI Data Storage: CD, USB Input hardware: digitizers, scanners Output hardware: printer, plotter Data: sources and formats; most expensive Personnel: trained and knowledgeable

GIS Basic Functions Data import and export Data management Thematic mapping Data analysis Map layout/presentation

Transportation planning What Can GIS Do Land use planning Business marketing Crime analysis Utility management Transportation planning ……

What Do GIS Professionals Do Data providers GIS applications GIS development Distributed GIS database

Father of GIS: Roger Tomlinson ESRI: leader in GIS industry History of GIS Origin: Cartography Father of GIS: Roger Tomlinson ESRI: leader in GIS industry

Father of GIS: Roger Tomlinson

GIS Data Model Vector vs. Raster Vector– Shape: point, line, polygon Vector- Example: lakes, rivers, roads, pipelines Raster– Surface: grid (cell) Raster- Example: elevation, rainfall, slope

Map: Layers

Feature: Geographic Object Point: city Line: river, road Polygon: lake, country

Feature: Location Point: pair of x, y coordinates Line: at least two pairs, beginning and end Polygon: a line returning to starting point

Feature: Size/Scale Ratio: relationship between the size of features on a map and the size of corresponding places in the world Large scale vs. small scale: 1:25, 000 vs. 1:100, 000,000

Feature: Linked to Info

Feature: Thematic map Use attributes to create thematic maps Symbology applied to features to indicate attributes Example: Population Density Energy consumption per capita

Feature: Spatial Relationship 1. Which cities are within 50 kilometers of a river? 2. Which countries have a river that crosses their border? 3. which countries share a border with China? 4. Which countries contain a lake completely within their borders?

Countries Sharing Border with China

ArcGIS Products ArcGIS for Desktop: ArcMap, ArcCatalog ArcGIS for Server ArcGIS for Mobile

ArcGIS License Basic Standard Advance

ArcCatalog Data format Shape: .shp Layer: .lyr Geodatabase: .gdb