Week 6 videos

Surface analysis

Introduction

• Introduction to surface analysis 1m29s
• Many more things than elevation 6m58s

What is a surface?

• Surface representations in geospatial 6m40s
• A bit more about trianulated irregular networks (TINs) 3m29s

Got surface, now what?

This first video got interrupted… which is why it is so short…

• Introduction to surface analysis methods 1m23s

And here’s part II

• More introduction to surface analysis methods 2m15s
• Focal methods 5m40s
• More complex methods: e.g., hydrology 2m25s

Wrap up

• Summary 2m54s

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terra package ‘cheatsheet’

Note that in the current versions of R and the terra and tmap packages the complaints about projections seem no longer to occur.

Basics

• Introduction to the ‘cheatsheet’ 2m19s
• Reading a simple dataset 3m46s
• tmap and terra raster data 4m12s

More layers in a raster stack

• Reading a set of layers into a stack 6m17s
• The layers in the example data 1m18s

Raster calculations

• Local operations 3m26s
• Raster overlay 4m51s
• Focal operations 7m11s (there is a slight glitch in this video around 6min where I had to cut out a terrible cough…)
• Zonal calculations 12m15s
• Surface analysis 4m13s

Interoperation between raster and vector and close

• Combining raster and vector and close 12m47s