Week 4 discussion: small improvements to answer key and instructions

[julietcohen]

The following changes are recommended:

• double check that the filepaths for importing data match where you expect students to store the data files
• delete the extra package import chunk
  • side note: If students do not already have the package spDataLarge installed, they may have to install using install.packages('spDataLarge', repos='https://nowosad.github.io/drat/', type='source')
• for the answer key under section Find Correlation Between NDWI and NDVI, it would be helpful to provide a more informative label the two plots that are currently both labeled as lyr1
• the variable peru_dem in the next section Find Distances Across All peru_dem Cells needs to be defined before it is called in the function aggregate or else the chunk errors
• similarly to the lyr1 plots, the final chunk’s output plots would also be easier to understand with distinct labels
• the wording of instruction 3 is a little confusing since it has 2 distinct parts but is organized as one task with a note and a bullet. Maybe just make this 2 parts a) and b)

[julietcohen]

I now realize that what I thought was a duplicate data import chunk is just your difference in filepaths between the data dir we use for the website repo and the data dir the students have for their repo

[avidalmeza]

Thanks for the feedback @julietcohen!

• [x] Double check filepaths for data import
• [x] Provide a more informative label for Find Correlation Between NDWI and NDVI
• [x] Define the variable peru_dem for Find Distances Across All peru_dem Cells
• [x] Add distinct labels to the final chunk’s output plots
• [x] Update wording of instruction 3. Split into Part A and Part B?
• [x] Add note about install.packages('spDataLarge', repos='https://nowosad.github.io/drat/', type='source')