SAS/GIS 9.4: Spatial Data and Procedure Guide
SAS/GIS? 9.4: Spatial Data and Procedure Guide
SAS? Documentation
The correct bibliographic citation for this manual is as follows: SAS Institute Inc. 2013. SAS/GIS? 9.4: Spatial Data and Procedure Guide. Cary, NC: SAS Institute Inc.
SAS/GIS? 9.4: Spatial Data and Procedure Guide
Copyright ? 2013, SAS Institute Inc., Cary, NC, USA
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Contents
About This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v What's New in SAS/GIS 9.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Recommended Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Chapter 1 ? Overview of SAS/GIS Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction to Geographic Information Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features of SAS Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Data in SAS/GIS Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Using the SAS/GIS Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Accessing the SAS/GIS Tutorial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 2 ? Preparing Spatial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Assessing Your Spatial Data Needs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Downloading TIGER/Line Spatial Data Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Examples of Common Spatial Data Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Changing the Default Characteristics of a Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Linking the Attribute Data to the Spatial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Saving the Map Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Chapter 3 ? Importing Spatial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Overview of Importing Spatial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 The GIS Spatial Data Importing Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Common Importing Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Importing ArcInfo Interchange Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Importing DLG Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Importing DXF Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Importing Dynamap Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Importing MapInfo Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Importing SAS/GRAPH Map Data Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Importing TIGER Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Importing Generic Spatial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Defining Composites in Imported Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Defining Layers in Imported Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 The SASHELP.GISIMP Data Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Chapter 4 ? Batch Importing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Overview of Batch Importing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 The Batch Import Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Examples of Batch Importing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 File Reference Table for Batch Importing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 TIGER 2007 ? Present Shapefile Variables for the FACES File Type . . . . . . . . . . . . . 57 Hints and Tips for Batch Importing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Chapter 5 ? Working with Spatial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 SAS/GIS Data Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Data Set and Catalog Entry Interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Merging Spatial Data with the MERGE= Argument . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Sample SAS/GIS Spatial Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Hints and Tips for Working with Spatial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
iv Contents
Chapter 6 ? Batch Geocoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Overview of Batch Geocoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Addresses in Spatial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Using Batch Geocoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 How Batch Geocoding Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 %GCBATCH Macro Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Batch Geocoding Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Hints and Tips for Batch Geocoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Chapter 7 ? The GIS Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Overview: GIS Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Concepts: GIS Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Syntax: The GIS Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Appendix 1 ? Sample Map Data Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 Map and Data Sets Supplied with SAS/GIS Software . . . . . . . . . . . . . . . . . . . . . . . . . 171 Maps in the USA Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 Maps in the NC Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Maps in the WAKE Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Copying and Modifying SAS/GIS Maps in the MAPS or MAPSSAS Library . . . . . . 175 Maps Produced by the SAS/GIS Tutorial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Appendix 2 ? Spatial Database Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 The SAS/GIS Data Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 SAS/GIS Spatial Database Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 Composites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Appendix 3 ? Calculating Chain Rank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 RANK Value Equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 Chain Rank Calculation Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
v
About This Book
Using This Document
Prerequisite
This document is written for users who want to use the SAS/GIS geographic information system to explore data in the context of a map. You must have a map in order to use SAS/GIS software. Furthermore, the map must be in a spatial data format that SAS/GIS software can use.
This document is written for users who are experienced in using the SAS System. You should understand the concepts of programming in the SAS language. The following table summarizes the SAS System concepts that you need to understand in order to use SAS/GIS.
Task Invoke the SAS System at your site
Reference
Instructions provided by the on-site SAS support personnel
Use Base SAS software
Use the DATA step to create and manipulate SAS data sets
Use the SAS windowing environment or SAS Enterprise Guide to enter, edit, and submit program code
Base documentation library: ? SAS Language Reference: Concepts ? SAS Data Set Options: Reference ? SAS Formats and Informats: Reference ? SAS Functions and CALL Routines:
Reference ? SAS Statements: Reference ? SAS System Options: Reference ? Base SAS Utilities: Reference
Allocate SAS libraries and assign librefs Create external files and assign filerefs
Documentation for using the SAS System in your operating environment:
? SAS Companion for Windows
? SAS Companion for UNIX Environments
? SAS Companion for z/OS
Manipulate SAS data sets using SAS procedures
Base SAS Procedures Guide
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