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Lecture 4: An Introduction to the Vector Data Model and Map Layout
Lecture 4: An Introduction to the Vector Data Model and Map Layout
Reviewing Vector Data Types
Reviewing Vector Data Types
Reviewing Vector Data Types
Reviewing Vector Data Types
Reviewing Vector Data Types
Reviewing Vector Data Types
Line (Arc) Feature
Line (Arc) Feature
Line (Arc) Feature
Line (Arc) Feature
X
X
Map Composition
Map Composition
Layouts
Layouts
Map Compilation
Map Compilation
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Map Layout: Map Legend
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Layouts
Map Layout: North Arrows
Map Layout: North Arrows
Map Layout: Scale Bar
Map Layout: Scale Bar
Map Layout: Scale Bar
Map Layout: Scale Bar
Layouts: data frame
Layouts: data frame
ArcMap: data frame
ArcMap: data frame
ArcMap: data frame
ArcMap: data frame
Data Frames: Context
Data Frames: Context
Data Frames: Inset maps
Data Frames: Inset maps
Layouts: data frame
Layouts: data frame
MXD Files
MXD Files
Layer Files
Layer Files
Layer Files
Layer Files
Layer Files
Layer Files
Layer Package Files
Layer Package Files
Layer Package Files
Layer Package Files
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Lecture 4: An Introduction to the Vector Data Model and Map Layout Techniques

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1Lecture 4: An Introduction to the 19Intersect. Point rules: e.g. Must be
Vector Data Model and Map Layout Properly Inside Polygons. ArcCatalog
Techniques. Introduction to GIS. By Brian includes new tools for defining and
Voigt University of Vermont Thanks are due validating topology rules (Book: Building
to Dr Troy and Dr Zhou, upon whose lecture a geodatabase). Introduction to GIS.
much of this material is based. 20Topology rules: Example. Say we have
21. Vector Data Model. Introduction to the following layers: parcels, sidewalks,
GIS. right of way boundaries, building
3Reviewing Vector Data Types. Three footprints, zoning Rules for spatial
basic “feature” or “object” types Point relationships Lots must be enclosed
Arc Polygon A layer holds a single feature polygons Buildings must be entirely within
type. Introduction to GIS. a lot Sidewalks must be outside a parcel
4Reviewing Vector Data Types. Attribute polygon and entirely within the public
table Attribute types Nominal attributes: right of way Lots must fall entirely
descriptive information Ordinal within a single zoning class All lots must
attributes: rank order or scale have access to a right of way.
Interval/ratio attributes: numeric items, Introduction to GIS.
order, magnitude of difference. 21Spaghetti Data Model. Non-topological
Introduction to GIS. data model. Collections of line segments
5Point Feature. ID. X,Y Coordinates. A and points Only stores features’
point layer: a collection of records with coordinates No real connection, topology
(x,y) coordinates. 1. 2,2. 2. 3,6. 3. 5,5. or relationships. Not for spatial
4. 6,3. … 10. 4,1. 6. 5. 4. 3. 2. 1. 0. 0. analysis. Generally come from CAD files or
1. 2. 3. 4. 5. 6. Introduction to GIS. 2. digitizing. Can “clean” these data, using
3,6. 3. 5,5. 4. 6,3. 1. 2,2. 10. 4,1. user-defined tolerances. Introduction to
Image modified from ESRI Arc Info GIS.
electronic help. 222. Map Layouts and Cartographic
6Line (Arc) Feature. One or several Representation. Introduction to GIS.
line segments define an arc (straight or 23X. Map Composition. Map? Map Elements?
curved) 2 points define a line segment Introduction to GIS.
Line endpoints are nodes; angle points are 24Map Composition. Introduction to GIS.
vertices (sing. vertex) Arcs meet at nodes 25Layouts. Create a map for layout in
Feature is the ARC, not the line segments ArcMap Layout view View>>Layout
Feature has length but not area. Vertices. view. Introduction to GIS.
Line segment. Node. Node. Introduction to 26Map Compilation. Geographic features.
GIS. Image modified from ESRI Arc Info Other map elements Legend Title North
electronic help. arrow Scale bar Author Neatline Source of
7Line (Arc) Feature. Each point has a data Other objects… Introduction to GIS.
unique location. Introduction to GIS. 27Map Layout: Map Legend.
8Polygon Feature. Area of homogenous 28Map Layout: Map Legend.
phenomena In a polygon layer, lines (arcs) 29Layouts. Legends are edited in the
define areas Closed region – first and Legends property window: Accessed by
last coordinate pairs are in the same double clicking a legend. Introduction to
location Line segments bound the polygon. GIS.
Lines (Arcs). Points. Introduction to GIS. 30Layouts. Legend editing: Items. Items.
9Topology. Definition1: Explicit Introduction to GIS.
encoding of spatial relationships between 31Layouts. Editing legend item style.
objects: the spatial location of each 32Layouts. Editing legend frame. Frame.
point, line and polygon is defined in Introduction to GIS.
relation to each other. Definition2: 33Layouts. Editing legend size and
Topology is a collection of rules and position. Size & Position.
relationships that enables the geodatabase Introduction to GIS.
to more accurately model geometric 34Map Layout: North Arrows.
relationships found in the world. 35Map Layout: Scale Bar.
Introduction to GIS. 36Layouts: data frame. Create a new view
10Why Topology. Two major purposes. or “data frame” in ArcMap. Introduction to
Allows for powerful analysis tools. GIS.
Quality control mechanism. Introduction to 37ArcMap: data frame. More than one
GIS. frame can be shown in layout view. Frame
11Types of Vector Topology. Arc-node 1. Frame 2. Introduction to GIS.
topology. Polygon topology. Route 38Data Frames: Context.
topology. Region topology. Introduction to 39Data Frames: Inset maps.
GIS. 40Layouts: data frame. Access and edit
12Arc-node & Node Topology. data frame properties. Introduction to
Connectivity analysis. Arc-node Topology. GIS.
Introduction to GIS. Image source: ESRI 41MXD Files. Mxd files are project files
Arc Info electronic help. Save your layout All other preferences
13Polygon-arc Topology. Polygon-arc Data is not included With an extension
Topology. Introduction to GIS. Image .mxd. File >> Save (As).
source: ESRI Arc Info electronic help. Introduction to GIS.
14Polygon-arc Topology. Adjacency. 42Layer Files. Save symbology and
Introduction to GIS. Image source: ESRI settings Primarily for saving legend
Arc Info electronic help. settings Opening a layer file will open
15Route Topology. Define paths based on the data layer with all the preferences
series of arcs. Introduction to GIS. Image saved With an extension .lyr. Introduction
source: ESRI Arc Info electronic help. to GIS.
16 43Layer Files. Use layer files when you
17Quality control and topology. Ensuring have lots of non-numeric categories.
“logical consistency” Define complex and Introduction to GIS.
nuanced rules governing spatial 44Layer Files. Create a layer file in
relationships of features Data quality ArcMap (also in ArcCatalog). Introduction
Single layer quality control Mutli-Layer to GIS.
quality control. Introduction to GIS. 45Layer Files. Import a layer file’s
18Quality control and topology. Single symbology in properties. Introduction to
layer quality control. Dangles. sliver GIS.
polygon. does not share a border. 46Layer Package Files. Save symbology
Introduction to GIS. and settings AND the data! With file
19Quality control and topology. extension .lpk. Introduction to GIS.
Multi-Layer quality control: Defining 47Layer Package Files. Double-click the
spatial rules between layers. Polygon file to open in ArcMap or ArcCatalog.
rules: e.g. Must Be Covered by Feature Introduction to GIS.
Class of. Line rules: e.g. Must not Self
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