1. What is the advantage of WLC over Boolean MCE? Provide an example. [3 marks] WLC is Weighted Linear Combination is an aggregation procedure that allows us to retain the variability from continuous factors and allows for trade-offs to occur within the different factors (Eastman, 2015). Boolean MCE is the constraints that provide you with … Continue reading Lab 8: Non-Boolean Multi-Criteria Evaluation
Author: alanahigginson
Lab 7: MCE: Criteria Development and the Boolean Approach
1) In 20 words or less, what does ‘Boolean’ mean in the context of MCE? [1 mark] Criteria that constrain analysis to particular geographic regions (ie. Suitable or unsuitable). 2) Why is multiplication most used in Boolean MCE rather than addition or subtraction? [1 mark] Multiplication multiplies the values when overlaying them, meaning that if … Continue reading Lab 7: MCE: Criteria Development and the Boolean Approach
Lab 6: Cost Distance and Map Algebra
Question 1: Arranging Data Arrange the following data into a) quintiles, and b) five equal intervals. Present each classification clearly. [2 marks]: 12, 9, 13, 20, 15, 15, 19, 43, 8, 11 a.) Quintiles: Q1: 9, Q2: 12, Q3: 15, Q4: 19 9, 12, 15, 19 b.) The range is between 8-43, so to make … Continue reading Lab 6: Cost Distance and Map Algebra
Lab 5: Distance and Macro Modeler
Question 1. Distance and Context Operators a. What is the difference between Euclidean distance and Manhattan distance? Give a real-world example of when each would be appropriate. [3 marks] Euclidean is the shortest, straight-line distance between two points (the pythagoras distance). Manhattan distance is measured as a network system (stepped path), so it is the … Continue reading Lab 5: Distance and Macro Modeler
Lab 4: Raster Modelling
Question 1: Cartographic Modeling a. Sketch by hand a model, using the correct symbology, that uses the ‘POLYRAS’ module to rasterize a vector file named ‘Education’, then overlays the new ‘Education’ raster with a raster file image named ‘Malaria’. [1 mark] Figure 1. This is a cartographic model that I created that shows an education … Continue reading Lab 4: Raster Modelling
Lab 3: Georeferencing
1.) Why do we need to change projected coordinate system rather than the geographic coordinate system? [2 marks] We need to change the projected coordinate system as it represents the data that is defined by a 2-D surface and can be measured in units like meters and feet. It is a way of projected the … Continue reading Lab 3: Georeferencing
3.d.) Massachusetts Population Change Map
Figure 1. The population changes in Massachusetts towns shown as either negative or positive percentages. Works Cited Eastman, Ronald J. TerrSet. Version 18.31. Worcester, MA: Clark University, 1987-2017.
Lab 2: Data Structure and Database Workshop
Question 1: Data Structures and Scaling a.) What is the difference between Integer, Byte, and Real Number data types? [1 mark] Integer data have no fractional parts and only increase by whole number increments. This can include numbers from - 32768 to + 32767. Byte data is a sub-type of integer and only includes positive integers 0-255. Byte files only require … Continue reading Lab 2: Data Structure and Database Workshop
Lab 1: Getting Started With TerrSet
Question 1. File management, preparation, and metadata. d.) Which coordinate system does this raster use? (0.5 marks). The raster file uses the coordinate system WGS 84. e.) What is the resolution? (0.5 marks) What are the units of measurement (i.e., what do the pixel values represent?) (0.5 marks) What is the extent (max and min coordinates)? (0.5 marks). The … Continue reading Lab 1: Getting Started With TerrSet
The Journey Begins
Thanks for joining me! Good company in a journey makes the way seem shorter. — Izaak Walton