Lab #9a: Introduction to Spatial Analysis

I. Read Bolstad Chapter 9 (pages 295-306 only) and answer the following questions based on reading and lecture.

1. What is spatial scope and what are the three types?
The extent or area of the input data that are used in determining the values at output locations. The Three types are Local Operation, Neighborhood Operation, and Global Operations

2. What are the two types of Algebra used in queries?  Give an example of each.
Set Algebra: <, >, =. Ex. State=California
Boolean Algebra: And, Or, Not. Ex. A OR B

3. What are the different types of spatial selection operations?
By Attributes - Set Algebra and Boolean Algebra
By Spatial Characteristics - Adjacency and Containment

II. AFTER completing Ormsby Chapters 10 & 11, complete the following exercise.

4.   Is there a feature dataset in the geodatabase? Yes

5.   What features classes are present? PtDumeQuad, Vegetation, Wetlands, Wetlands_Project.

III. Exercise 1:

6.   How many features (records) exist in the Vegetation feature class in the Lab9aData.mdb geodatabase? 10896

7.   How many features (records) exist in the new VegCov feature class after running the dissolve operation?
   9  

8.   How many features (records) exist in the new “VegCov_Clip” feature class? 8

IV. Exercise 2: Generate a layer of Riverine wetlands that fall in the Point Dume quad. 

9.   How many wetland features (records) were selected? 383

10.   How many features (records) were selected? 117

 

Due: Wednesday, October 27th, 2010