u13-THE VECTOR OR OBJECT GIS

u13-THE VECTOR OR OBJECT GIS - UNIT 13 - THE VECTOR OR...

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Sheet1 Page 1 UNIT 13 - THE VECTOR OR OBJECT GIS <toc.html#UNIT13> UNIT 13 - THE VECTOR OR OBJECT GIS Compiled with assistance from Holly Dickinson, State University of New York at Buffalo ------------------------------------------------------------------------ For Information that Supplements the Contents of this Unit: Organizing Attribute Data <http://www.utexas.edu/depts/grg/gcraft/notes/datacon/datacon.html#Attribute> (Foote and Huebner/Geographer's Craft) -- Flat files and spreadsheets, hierarchical files, relational files. Representation and Data Quality <http://weber.u.washington.edu/~chrisman/G460/Lec06.html> (Chrisman/U of Washington) -- Primitives for representation: attribute, space, points located in a coordinate system, lines formed from line segments definitions of data quality. Example of Topological Relationships <http://www.utexas.edu/depts/grg/gcraft/notes/datacon/datacon.html#Topological> (Foote and Huebner/Geographer's Craft) -- Nodes, arcs, polygons, contiguity. Vector Data Maintenance and Analysis <http://aris.sfrc.ufl.edu/classes/fnr3434c/vectoranalysis/vector.html> -- Introduction operations Vector View of the World <http://www.utexas.edu/depts/grg/gcraft/notes/datacon/datacon.html#Vector> (Foote and Huebner/Geographer's Craft) -- Plus, graphical comparisons between raster and vector systems. ------------------------------------------------------------------------ # A. INTRODUCTION <#SEC13.1> * Vector data model <#SEC13.1.1> # B. "ARCS" <#SEC13.2> * Storing areas <#SEC13.2.1> # C. DATABASE CREATION <#SEC13.3> * Building topology <#SEC13.3.1> * Editing <#SEC13.3.2> * Relationship between digitizing and editing <#SEC13.3.3> * Edgematching <#SEC13.3.4>
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Sheet1 Page 2 # D. ADDING ATTRIBUTES <#SEC13.4> # E. EXAMPLE ANALYSIS USING VECTOR GIS <#SEC13.5> * Objective <#SEC13.5.1> * Procedure <#SEC13.5.2> * Result <#SEC13.5.3> # REFERENCES <#SEC13.6> # EXAM AND DISCUSSION QUESTIONS <#SEC13.7> # NOTES <#SEC13.8> This unit begins a two part introduction to vector GIS. We have placed these units here since we feel this discussion benefits from an understanding of the previous introduction to spatial data concepts in Units 10 to 12. However, with a little revision, it is possible to move this module so that it follows Units 4 and 5 on raster GIS. UNIT 13 - THE VECTOR OR OBJECT GIS Compiled with assistance from Holly Dickinson, State University of New York at Buffalo A. INTRODUCTION <#OUT13.1> Vector data model <#OUT13.1.1> * based on vectors (as opposed to space-occupancy raster structures) * fundamental primitive is a point * objects are created by connecting points with straight lines o some systems allow points to be connected using arcs of circles * areas are defined by sets of lines o the term polygon is synonymous with area in vector databases
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This note was uploaded on 10/05/2010 for the course GEO 591 taught by Professor Davidm.mark during the Fall '10 term at SUNY Buffalo.

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u13-THE VECTOR OR OBJECT GIS - UNIT 13 - THE VECTOR OR...

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