Module 04

Maps for field use

Yesterday in the Great Smokies
Webcam archive
GEO 409: Advanced GIS


  • ESRI Cartography MOOC with ArcGIS Pro is on Feb 22!
  • Use your ArcGIS Pro login to register for free
  • Registration ends soon.


  • Upgrading to ArcGIS Pro 3.1
  • Let me know if you have any issues
  • we have noticed a problem in raster imagery.

Quick look ahead

  • 🏀🤯

  • Five more modules
    • Field mapping
    • Intro to Lidar
    • Lidar II
    • 3D mapping
    • Final project

Virtual field trip to

Downtown Lexington



  • Aerial vs. terrestrial
  • Oblique vs. orthographic
  • Resolution
    • temporal (how old is it?)
    • spatial (how much detail is in it?)
    • spectral (color, b/w?)
  • Historic images from


  • Review labs
  • create map layouts in ArcGIS Pro
  • make our first web page
  • and load maps into mobile app.

Lab review

Lab 3

  • Copy pasta 💣 no longer works as expected.
  • Fundamental skills are important.
    • Can I address my data?
    • Can I keep track of variables?
    • Do I practice?
  • This is challenging but with big reward.
  • We'll spend more time on this lab today.

In-class task

  • Load module and lab 3.
  • Open Catalog and show ky.gdb and practice-03.gdb
  • and prepare to run the lab 3 Notebook.

Lab 4

  • Cartography! 💪
  • Using data from the last two lessons.
  • Taking a break from Python and ArcPy (if you have the required data)
  • to focus on ArcGIS Pro and web publishing.

Picnic committee

  • Chairwoman: "Shearer, what is this Notebook?"
  • "We wanted the south facing slopes!"
  • Me: "I wrote a script to find the best spot."
  • "Either greater than SE or less than SW."
  • Chairwoman: "Check that logic!"

Picnic committee

  • Chairwoman: "We wanted the highest point and lowest elevation on campus!"
  • "And what's that funny business in the last cell?"
  • "Didn't we ask for a pretty Markdown cell?"
  • Me: "🥵 but hold on, I can fix that. 😎"


  • Good maps depend on good data.
  • What's good?
    • Precise?
    • Accurate?
    • Comprehensive?
  • Relative to your understanding of the possibilities and limitations of the data.

Don't force it

Our checkpoints

1. Inspiration

2. Purpose

  • "My map shows..."
  • Revealed in concise title, subtitle, etc.

3. Medium

  • Digital data
  • as static image.
  • Literally painting with pixels.
  • Do artists know their medium?

4. Method

  • Obtain visual hierarchy.
  • Base map – ground – provides context
  • with layers of information – figures – ascending visually in importance.
  • Presentation is balanced & cohesive, with purpose easily understood.

5. Revision

  • Does it work?
  • Iterate over
    • purpose
    • medium
    • method

In-class task

  • Create layouts for
  • Kentucky Counties with selected land cover classes
  • Tree canopy height model for UKy central campus
  • (See lesson videos.)


Requires more coding

Export Layout

  • Share
    • Web JPEG
    • Geospatial PDF

Coding tools ✏️📓🎓

  • Code stored as plain-text file
  • language given by file name extension.
  • A good text editor
    • highlights language syntax
    • has a lot of extensions
    • and is 🚫 not Notepad, MS Word, etc.

Our editors

Sharing tools

  • What if we lost work?
  • Share (synchronize) to a remote backup
    • and to remote collaborator(s).


  • "Git is a version control system for tracking changes in computer files and coordinating work on those files among multiple people."

Git history

  • Git was created by Linus Torvalds in 2005 for development of the Linux OS, with other developers contributing to its development.

  • The web platform (owned by Microsoft) that uses Git to host collaborative coding and design projects.

Git is a DVCS

  • Distributed
    • local <=> remote projects synched (the backup)
  • Version Control
    • create snapshots of project at anytime
    • branch project to multiple versions
  • System
    • can scale up to many collaborators.

This is killer 🗡️

  • We can work on our own computer (with all of its resources)
  • while synchronizing with other remote collaborators.
  • Discover what others are making.

Git jargon

  • repository – the project
  • local – the computer you are at now
  • remote – a computer you do not have physical access to
  • clone – create a local synched copy from remote repo
  • commit – make snapshot of your project
  • push – put your changes to the remote
  • pull – get new changes from the remote

Install GitHub Desktop

  • Install GitHub Desktop.
  • Sign in to GitHub Desktop with your account.
    • Preferences > Accounts (macOS)
    • File > Options > Accounts (Windows OS)

Our workflow

  • Find invitation to lesson on Canvas
  • Accept invite and clone remote repo
  • Commit changes as you work
  • Push changes when you are finished
  • Pull changes when I request



  • A simple markup language (a method to style text) created in 2004 that looks good in source code form
  • uses the .md file extension
  • widely used in README files, common project documentation.
  • Use these examples as a guide editing Markdown.




  • Can undo almost anything
  • in GitHub Desktop
    • before commit: Discard changes
    • after commit: Revert last commit
  • Command line options provide more control.

Git tips

  • Add @UKy-GIS to your profile
  • Fetch and pull before you start
  • Commit and push often
  • Never store a repo inside another repo
  • 100 MB file size limit 🐉 NEVER store downloaded data in a repo

In-class task

  • Clone down module repo
  • to root GIS folder.
  • Makes changes
  • commit and push up changes.

Mobile mapping

  • Avenza Maps
  • Geospatial PDFs (and TIFFs)
  • on your device
  • without cellular service.

In-class task

  • Load a map into Avenza Maps
  • from your repo.
  • Or, from the lesson.