STA 9750 - Week 11

Michael Weylandt

STA 9750 Mini-Project #03

I spot-checked several results - look fantastic!

  • Fewer git questions - folks getting the hang of things!
  • Peer feedback assigned via GitHub
    • You give comments on other students’ repos
    • Due in 1 week

Pay attention to the rubric

STA 9750 Mini-Project #04

MP#04 released today

  • Due 2024-12-04 (\(\approx\) 3 weeks)
  • Topic: financial modeling
    • Comparison of two retirement plans
    • Historical data + Monte Carlo (“bootstrapping”)
  • Format:
    • Decision Analytics - Play the role of financial advisor
    • GitHub post AND Brightspace submission

Week 11 Pre-Assignment

Due at midnight tonight - take a moment to do it now if you haven’t already!

Going Forward

Pre-Assignments

Brightspace - Wednesdays at 11:45

  • Reading, typically on course website
  • Brightspace auto-grades
    • I have to manually change to completion grading

Next pre-assignment is November 20th

Thank you for FAQs and (honest) team feedback. Keep it coming!

Grading

We owe you:

  • MP#02 final average (Need to upload to BS)
  • MP#02 peer meta-review (Need to upload to BS)
  • Posting videos to Vocat (Need to do video splitting)
  • Mid-Term Check-In Feedback

Course Support

  • Synchronous
    • Office Hours 4x / week
      • MW Office Hours on Monday + Thursday
      • CR Tuesday + Friday
      • No OH during Thanksgiving break
  • Asynchronous
    • Piazza (\(38\) minute average response time)

Change: MW Thursday Zoom OH now 4:00pm to 5:00pm

Upcoming

Nov 20:

  • MP#03 Peer Feedback
  • Pre Assignment

Nov 27 - Thanksgiving Holiday (No Class on Nov 28)

  • Check-In Peer Feedback (Vocat)

Pre-Assignment #09 FAQs

FAQ: HTML vs CSS

What is the difference between HTML and CSS?

HTML is substance; CSS is style

Distinction can be a bit blurry & CSS can live “inside” HTML

Example

FAQ: a in SelectorGadget

Why does [SelectorGadget] display “a” in the selector when selecting a web link?

a is for anchor.

Confusingly, anchors are both links and destinations.

Anchors can reference:

  • Another page (http://URL)
  • A particular part of another page (http://URL#place)
  • A particular part of the same page (#place)

Quarto supports cross-linking with anchors

FAQ: SelectorGadget - Multiple Clicks

Why does SelectorGadget go “unique” when I click multiple elements of interest?

Can’t find a common structure:

  • Typically a problem within lists or common element types

FAQ: Selectors - Nesting

How to avoid unwanted elements such as headers or sidebars, focusing only on the main content I need?

Nest your selectors!

thing1 thing2 will select only thing2s inside a thing1

StarWars page

Try main h2

FAQ: Relationship to Markdown

Is [HTML] similar to Markdown ?

Markdown is an easier way to write (a subset of) HTML

Name is a bad joke: Markup (M in HTML) vs Markdown

HTML can (theoretically) do more, but painful to write by hand

FAQ: Messy HTML

How can we target data with CSS Selectors in messy HTML?

Pain and suffering - depends how messy.

Worst case: a little bit of HTML selection + text processing (next week)

Peer Advice

Selected Peer Advice:

  • More effort into writing, motivation, and formatting (several)
  • Be sure to push image files in addition to qmd
  • Code-folding!
  • Learning style for more experienced peers
  • More charts
  • setNames to improve table formatting. (MW: I prefer rename YMMV)
  • Table of contents
  • Be selective in outputs

My Advice

  • Most effort \(\neq\) most important

  • Reader knows less and cares less than you think

  • Summary / Abstract goes a long way

  • Cross-linking useful

  • Use suggested file names

  • “What have you tried?”

  • Help me help you

  • Print less

Today

Agenda

  • Review of HTML / CSS Structure
  • Pre-Assignment Examples
    • Star Wars
    • CUNY Table
    • Baruch GPS
  • Exercise
    • CUNY Map
    • Cocktails (Part 1)

HTML Review

  • HTML Structure
  • CSS Selectors (SelectorGadget)
  • Introduction rvest

Pre-Assignment Exercises

main h2

table or tbody

.geo

Exercise 1: CUNY Map

Recall Lab 1. Goal: extend map to all CUNYs

Steps:

  1. Read CUNY table and extract links
  2. Follow links and pull coordinates
    • To read geo class, use this:
COORDS <- html_element(".geo") |> html_text() |> str_split_1(";")
LAT <- as.numeric(COORDS[1])
LON <- as.numeric(COORDS[2])
  1. Adapt Lab 1 leaflet to show all locations

Breakout Rooms

Order Team Order Team
1 Rat Pack 6 Ca$h VZ
2 Subway Surfers 7 Listing Legends
3 Chart Toppers 8 TDSSG
4 Metro Mindset 9 Broker T’s
5 Apple Watch 10 EVengers

Exercise 2: Cocktails

Goal: create a cocktail data frame from Hadley’s Recipies

Today: - How to find them all? - How to extract individual recepies? - How to pull items from each recipie?

Next time: - How to convert text to numeric values + column info - Data wrangling