Case Study 10: Building the past

• Case Study 10

Take 10 minutes to brainstorm with your table what the data inputs are and what visualizations you would like to create?

• What mutations or summaries will you need to do?
• What difficulties do you expect?
• Do each of the task items make sense?

Task 20: Getting in SHP

• Task 20

Tracking Progress

• Don’t forget to keep track of your tasks.
• Semester project should be moving along.
• Check out week 13 work and make sure you are working on this.

Semester Project Discussion

• If you would like to alter the project, then post a comment to the semester project issue with your update.
• Call me out and ask me to review and approve changes.

Task 20 Question

Write out in a sentence what this code is doing. Make sure to catch the key points in your sentence

pacman::p_load(downloader, sf, fs, tidyverse)
dams_path <- "https://research.idwr.idaho.gov/gis/Spatial/Hydrography/streams_lakes/c_250k/hyd250.zip"
df <- tempfile(); uf <- tempfile()
download(dams_path, df, mode = "wb")
unzip(df, exdir = uf)
rivers <- read_sf(uf)
file_delete(df); dir_delete(uf)

Convert to another projection

Chapter 6: Reprojecting geographic data

• Take a minute and look up projections that you like and get your Task 19 or 20 graphic into that projection - https://proj.org/operations/projections/index.html and https://proj.org/usage/projections.html.
• Class activity
  • http://spatialreference.org/ref/
  • https://en.wikipedia.org/wiki/List_of_map_projections