Skip to content

Latest commit

 

History

History
65 lines (50 loc) · 2.75 KB

m4_exercise2.md

File metadata and controls

65 lines (50 loc) · 2.75 KB
Raw

Module 4 - Exercise 2

1. Skills Practiced

This exercise will practice:

  • Analytic Hierarchy Process (AHP)

2. Description

As a planner, you are trying to make land-use decisions for THLD by using LUCIS. Now you have identified four agricultural land-use purposes (goals): Row crops, Livestock, Timberland, and Orchards and groves. After finishing building up the suitability modeling for each land-use purpose, you are ready to assign weights to these four purposes by using AHP. Because these are agricultural land-use purposes, you asked four farmers about their interests and find:

  • The first farmer mainly plants row crops.
  • The second farmer focuses on livestock.
  • The third farmer owns a sawmill.
  • The fourth farmer is a owner of orchards.

Four farmers assign land-use suitability weights to each purposes as follows:

farmers

Note that their opinions are equally weighted (i.e., 0.25 for each farmer).

Use the Compute AHP Weights tool in LUCIS-OPEN to compute the weights for the four land-use purposes.

💡 Note:
For fractional inputs, please refer to the Compute AHP Weights tool instruction.

3. Instruction

  1. Open the Compute AHP Weights tool in QGIS.
  2. Select Define AHP weights for Weights generating options.
  3. For the List of criteria to weight, click the "..." button and double click to change the default name "Criteria 1", "Criteria 2", and "Criteria 3" to Row crops, Livestock, and Timberland respectively.
  4. Click Add Row button to add a new row and name it as Orchards and groves. Then, click OK.
  5. For the Comparison table for creating the reciprocal matrix, click the "..." button and add three new rows by click Add Row button. You need to fill out the values in each form in this table.
  6. Take the form of Farmer 4 as an example, set the parameters in the table as follows: AttrTbl
    Note that Row id and Column id denote the row index and column index in the matrix respectively. For instance, Row id 2 and Column id 3 represents the cell in second row and third column in the form of Farmer 4. the Pair-wise importance stores the value in that cell, which is 1/2 (0.5).
  7. Click OK to close the window, and click Run.
  8. Repeat the process above to calculate the weights for the forms of Farmer 1, Farmer 2, and Farmer 3.

5.Result

  • Follow the steps above, put your result into a spread sheet and turn it in.
  • Please go back to Module 4 to complete the third exercise.