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Lab Materials — Arizona State University
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LAB 5 — ASSIGNMENT

Spatio-Temporal Change (Part 1)

Download the assignment file, complete the three questions, and submit your .qmd and rendered .html to Canvas.

Assignment Workflow

This file is identical to the tutorial
The pre-filled code (Steps 1–9) produces the same output as the tutorial. If this file is in the same folder as your tutorial QMD, you can knit immediately and see the same results. If you placed it in a different location, run the packages chunk first, then knit.
Need a Census API key?
Setup instructions are in the Lab 5 Tutorial under “Before You Begin.” Register free at api.census.gov/data/key_signup.html — key arrives by email within minutes.
1

Download and rename

Use the download link below. Save to your PAF516/Lab5/ folder. Rename to Lab5_Assignment_YourLastName.qmd before editing.

2

Knit the file first

Press Cmd+Shift+K (Mac) or Ctrl+Shift+K (PC). Steps 1–9 render automatically. Review the change score summary (Step 4), the significance map (Step 6), and the LISA overlay (Step 8) — you will interpret these for Q1.

3

Answer the three questions

Q1: Interpret the overall direction and patterns of change (text). Q2: Rerun the temporal change analysis at the Arizona statewide tract level using the scaffold chunks (code). Q3: Compare the statewide tract map to the Maricopa County map (text). Re-knit after completing Q2.

4

Submit to Canvas

Submit both Lab5_Assignment_YourLastName.qmd and Lab5_Assignment_YourLastName.html.

The Three Questions

Q1 Interpret the Direction of Change Text answer — no code required

After knitting, review the change score summary (Step 4), the significance map (Step 6), and the LISA overlay (Step 8), then answer:

  • What is the overall direction of hardship change across Maricopa County between 2013 and 2019?
  • Are the 2019 hot spots largely worsening, improving, or stable compared to 2013?
  • What does the significance map tell you about which changes are real vs. sampling noise?

Minimum 150 words. Reference specific numbers from the step outputs.

Q2 Temporal Change at the Arizona Statewide Tract Level Code + output required

Rerun the temporal change analysis at the Arizona statewide tract level (geography = "tract", state = "AZ", no county filter) for both 2013 and 2019:

  • Six scaffold chunks are provided: q2-pull-2013, q2-pull-2019, q2-widen, q2-pooled, q2-join, and q2-sidebyside
  • Apply pooled standardization, compute change scores, and produce the side-by-side three-panel map
  • Show complete code and output
Q3 Compare Maricopa County vs. Arizona Statewide Text answer — no code required

Compare the results from Q2 with the Maricopa County maps from Steps 7–8:

  • Pattern comparison: Does the statewide view reveal regional patterns hidden at the county level? Where is change most concentrated?
  • Scale comparison: What does comparing two geographic scales reveal about the limits of a single-county analysis?

Minimum 100 words.

Quick Reference

ActionMacPC
Run current chunkCmd+ReturnCtrl+Enter
Knit / RenderCmd+Shift+KCtrl+Shift+K

Download & Submit

Lab 5 Assignment File

Download Lab5_Assignment.qmd

Right-click → Save Link As. Save to your PAF516/Lab5/ folder.

Submit to Canvas

  • Lab5_Assignment_YourLastName.qmd — your edited source file
  • Lab5_Assignment_YourLastName.html — the rendered output
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