Spatial Analysis and Modeling (GIST 4302/5302)

Guofeng Cao

Department of Geosciences

Texas Tech University

Geographic Information Science and Technology (GIST) 3 Core Courses and 2 Electives

GIST 5300. Geographic Information Systems (3) GIST 5302.Spatial Analysis and Modeling (3) GIST 5304. Advanced Geographic Information Systems (3) GIST 5308. Cartographic Design (3) GIST 5310. GPS Field Mapping (3) GIST 5312. Internet Mapping (3) GEOG 5301. Remote Sensing of the Environment (3) GEOL 5341. Digital Imagery in the Geosciences (3) GEOL 5342. Spatial Data Analysis and Modeling in Geosciences (3) NRM 5404. Aerial Terrain Analysis (4)

TTU Graduate Certificate

Geographic Information Science and Technology (GIST) 2 Core Courses and 4 Approved Electives

GIST 3300. Geographic Information Systems (3) (Required for Geography Major) GIST 4302. Spatial Analysis and Modeling (3) GIST 4304. Advanced Geographic Information Systems (3) GIST 4308. Cartographic Design (3) GIST 4310. GPS Field Mapping (3) GIST 4312. Internet Mapping (3) GEOG 3301. Remote Sensing of the Environment (3) GEOL 4341. Digital Imagery in the Geosciences (3) GEOL 4342. Spatial Data Analysis and Modeling in Geosciences (3) NRM 4404. Aerial Terrain Analysis (4)

Undergraduate Minor in GIST

Course Description

• This course will introduce concepts and commonly used methods in quantitative analysis of (geographic) spatial data

• Contents include: – Representation and characteristics of spatial data

(fundamentals of spatial databases)

– Concepts in spatial analysis and spatial statistics

– Specific spatial analytical and spatial statistical methods

Course Objectives

• After completing this course, the students are expected to learn how to: – formulate real-world problems in the context of

geographic information systems and spatial analysis

– apply appropriate spatial analytical methods to solve the problems

– utilize mainstream software tools (commercial or open-source) to solve spatial problems

– evaluate and assess the results of alternative methods

– communicate results of spatial analysis in the forms of writing and presentation

Course Format

• Lectures – Instructor: Guofeng Cao (guofeng.cao@ttu.edu) – Science building Room 234 – T, Th: 2:00-2:50pm – Office hours: T, Th: 1:00pm-2:00pm at Holden Hall 211

• Lab sessions: – TA: Samaneh ‘Sammy’ Tabrizi

(samaneh.tabrizi@ttu.edu) – GIS Lab: Hoden Hall 204 – Office hours: M 5:00pm-6:00pm, and T 11:00am-noon

at Holden Hall 209

Grading

• Two written exams: 30% (15% each)

• Eight lab assignments: 40% (5% each)

• Final project: 30% including proposal (5%), class presentation (10%) and project report (15%)

• Class and lab attendance is mandatory

Lab Assignments

• Multiple software will be utilized:

– ArcGIS

– CrimeStat

– GeoDa

– R or Matlab (optional)

Final Project

• The project could be used as a setting for your thesis and dissertation topics, other course topics or research interests

• Start to think of the project ideas early and communicate with the instructor and TA for comments

Textbook

• O'Sullivan, David and David J. Unwin, 2010. Geographic Information Analysis (Required)

• Optional: – de Smith, Michael J., Paul A. Longley and Michael F.

Goodchild (2013), Geospatial Analysis: A Comprehensive Guide to Principles, Techniques and Software Tools, 4th Edition. Available in both print and web (free!) version at http://www.spatialanalysisonline.com

– Allen, David W. (2011), GIS Tutorial 2, Spatial Analysis Workbook for ArcGIS 10, Esri Press.

– Mitchell, A. (2009), The ESRI Guide to GIS Analysis, vol. 2: spatial measurements and statistics, ESRI Press

Other Logistics

• E-mail: You are required to have a valid TTU email address for setting up your Esri Global Account.

• USB Flash Drive: To save your homework, lab assignments and projects, you will need a USB flash drive. Given that GIS data can take up a lot of space, a minimum 2 GB flash drive is recommended.

• Withdrawing: You are responsible for dropping the class.

Survey

• Name, major, year

• GIS experiences (courses taken, projects participated, etc.)

• What do you expect to learn from this class?

• Programming experiences (programming languages, databases, and etc). There would be file if you don’t have

Introduction

Scope of Spatial Analysis • Data do not equal information • Analysis of spatial data (geospatial data in particular)

– Spatial data manipulation (in GIS) • Spatial query, measurements, transformation, network analysis, location

analysis (spatial optimization)…

– Spatial data analysis • Exploratory spatial analysis • Visual analytics • Data-driven, let “data speak themselves”

– Spatial statistics • An extension of traditional statistics into a spatial settings to determine

whether or not data are ‘typical’ or ‘unexpected’ • Geostatistics: Quantify the spatial relationships between observations of

different locations for estimation of ‘unknown’ locations

– Spatial modeling • Involve constructing models to predict spatial outcomes

Topics • Spatial data representation and manipulation

– Buffer, spatial query, overlay analysis (lab 2-3) – Surface analysis and map algebra (lab 6)

• Point pattern analysis (lab 4) • Spatial interpolation

– Deterministic interpolation (lab 6) – Kriging (lab 7)

• Spatial statistics – Spatial autocorrelation (lab 5) – Spatial regression (lab 8) – Geographically weighted regression (lab 9 )

• Spatial uncertainty (if time permits) • Multivariate spatial data analysis (if time permits)

Characteristics of (Geographic) Spatial Data

• Spatial (and temporal) Context: “Everything is related to everything else, but near things are more related than distant things” – Waldo Tobler’s First Law (TFL) of geography

– nearby things are more similar than distant things

– phenomena vary slowly over the Earth's surface

– Compare time series

Characteristics of (Geographic) Spatial Data

• Implications of Tobler’s First Law: – We can do samplings and fill the gap using estimation procedures (e.g.

weather stations)

– Spatial patterns

– Image a world without TFL:

• White noise

• No polygons (how to draw a polygon on a white noise map?)

Characteristics of (Geographic) Spatial Data

• Spatial Heterogeneity • Earth’s surface is non-stationary

• Laws of physical sciences remain constant, virtually everything else changes – Elevation,

– Climate, temperatures

– Social conditions

• Global model might be inconsistent with regional models: – Spatial Simpson’s Paradox

Characteristics of (Geographic) Spatial Data

• Fractal Behavior – What happens as scale of map changes?

– Coast of Maine

• Implications: – Volume of geographic features tends to be underestimated

• Lengths of lines

• Surface areas

Lab of this week

• Review of map projection:

– Mercator puzzle: http://gmaps-samples.googlecode.com/svn/trunk/poly/puzzledrag.html