Quick look ahead

• 🏀🤯

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

Virtual field trip to

Downtown Lexington

38.046354,-84.495006

Imagery

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

Goals

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

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?
  • Do I come to class, office hours, or ask questions?
• 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 investigate the data.
• Prepare to run the lab 3 Notebook.

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. 😎"

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.

Base map of Kentucky

• Should have layers clipped to the state boundary
• from module two.
• Example Notebook.

Canopy height model

• Should have layers for height and vegetation
• from module three.
• Example Notebook.

Problems?

• Temporal resolutions.
• Active vs. passive sensors.

In-class task

• Use 2010 NAIP imagery to create vegetation index
• using this Notebook.

Cartography

• 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

• Theme? Style? Color?
• Check out the David Rumsey Map Collection

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.)

Publishing

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

• Install VS Code 🔥

Sharing tools

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

Git

• "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.

GitHub.com

• 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 GitHub.com 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

Markdown

• 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.

undo

• 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 GitHub.com 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.

STOP