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Welcome to Mapping Tom Sellsted – City of Yakima, Washington Vladimir Strinski – Hitech Systems.

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Presentation on theme: "Welcome to Mapping Tom Sellsted – City of Yakima, Washington Vladimir Strinski – Hitech Systems."— Presentation transcript:

1 Welcome to Mapping Tom Sellsted – City of Yakima, Washington Vladimir Strinski – Hitech Systems

2 Objectives  What is GIS?  Why do we use GIS?  Terminology  Creating your own layers  MapInfo / ESRI specific tools

3 What is GIS? Geography is information about the earth's surface and the objects found on it, as well as a framework for organizing knowledge. GIS is a technology that manages, analyzes, and disseminates geographic knowledge.

4 Three Views of a GIS - A Database View  A GIS is a unique kind of database of the world a geographic database (geodatabase). It is an "Information System for Geography." Fundamentally, a GIS is based on a structured database that describes the world in geographic terms.

5 Three Views of a GIS - A Map View  A GIS is a set of intelligent maps and other views that show features and feature relationships on the earth's surface. Maps of the underlying geographic information can be constructed and used as "windows into the database" to support queries, analysis, and editing of the information. This is called geovisualization.

6 Three Views of GIS - A Model View A GIS is a set of information transformation tools that derive new geographic datasets from existing datasets. These geoprocessing functions take information from existing datasets, apply analytic functions, and write results into new derived datasets

7 Geographic Information Systems  A method to visualize, manipulate, analyze and display spatial data  “Smart Maps” that link databases to a map  How many, what kinds, where are they?  Combine data from many different sources  80% of all data has some spatial component

8 Database “Not Easy to Interpret”

9 Visualization “Worth a Thousand Words”

10 Two Ways to Input and Visualize Data Raster – Grid “pixels” A location and value Satellite image and aerial photos are in this format Vector – Linear Points, Lines & Polygons “Features” (house,lake, etc) Attributes size, type, length, etc.

11 Welcome to Mapping Terminology

12 Types of Features  Vector Features –Points –Lines –Polygons  Raster Features –Elevation Models –Imagery

13 Point Features

14 Line Features

15 Polygon Features

16 Raster Features

17 Composite Layers

18 Layer Table

19 Layer Table Geometry

20

21 Map Projection  What is projection?  Why do we need it?  On the fly projection

22 What is Map Projection?  A projection is a mathematical means of transferring information from the Earth's three-dimensional, curved surface to a two-dimensional medium—paper or a computer screen.

23 Why use Map Projection?  Map layers come from different sources An elevation image classified from a satellite image of Minnesota exists in a different scale and projection than the lines on the digital file of the State and Providence boundaries. The elevation image has been reprojected to match the projection and scale of the State and Providence boundaries.

24 On the Fly Projection  Reprojects features automatically  Imagery won’t reproject on the fly  Great for AVL applications

25 Creating a Sample Map Using ESRI Products

26 Starting ArcMap

27 Setting Layers/Data Frame Properties

28 Set appropriate projection

29 Adding Layers Add Data

30 Adding Layers Dialog

31 Display photos

32 Add Streets

33 Configure Streets

34 Display Streets

35 With other Layers added

36 Create Map Layout

37 Show Map Layout

38 Add Map Elements

39 Complex Composition

40 For More Information: Tom E Sellsted City of Yakima, Washington tsellste@ci.yakima.wa.us http://www.ci.yakima.wa.us/gis

41 Sources of Data  All departments contribute  One central repository  Ease of sharing  Ease of maintenance  Other agencies  Vendors


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