# Week 5 Exercise: Color scale design and implementation (due Oct 9) In this week's [_lecture_](https://ctsilva.github.io/2025-InfoVis-CSE/slides/week5-color.html#/) and [_lab_](https://ctsilva.github.io/2025-InfoVis-CSE/labs/week5-lab.html#/), we focused on the nature of color scales and why they're important for visualizations. In this week's exercise, we will take this opportunity to practice with color scales further and write our own custom legends for colors. ### _This assignment is divided as follows:_ 1. [Legends and Color Scales](#cell-263) [25%] 1. [Understanding Scale, Domain, and Range](#cell-268) [16%] 2. [Legends, Practicing with Colors](#cell-335) [9%] 2. [Heatmaps and Color Scales](#cell-11) [30%] 1. [Generating the Heatmap](#cell-78) [15%] 2. [Testing With Pre-Defined Color Scales](#cell-232) [9%] 3. [Analyzing Color Scale Effectiveness](#cell-559) [6%] 3. [Practicing with Bubble Charts and Custom Legends](#cell-572) [45%] 1. [Plotting the Bubble Chart](#cell-574) [14%] 2. [Adding Size](#cell-624) [5%] 3. [Custom Legend for Colors](#cell-732) [26%] ### _Note:_ Code-Intensive Exercise Though there are many parts to each section, note that these tasks are rather simple. Nonetheless, this exercise will be particularly code-heavy. Keep in mind of your time commitment for this, and go at a steady pace you are comfortable with. Do not hesitate to ask online or during office hours for code questions. --- ## Assignment Instructions **_Fork this notebook to make sure that you are working on your own copy!_** Work your way down the notebook, making sure to run code blocks whenever they appear. Some parts may require you to fill out markdown blocks. Others will require code work. And some are not interactive and are just for instructions! All exercises will be marked with a **[TO-DO]**, so pay attention to them throughout the notebook. **_[TO-DO]'s and [NOTES]_**: Keep an eye out not just for **[TO-DO]** but also **[NOTES]**. You MUST read these notes to fully understand what's going on in some sections. **_Academic Integrity Policies_** Please be mindful of our academic integrity policies when completing this assignment. ## Submission Instructions This assignment is due **October 9th, 2025 @ 11:59pm**. Please follow the submission instructions: 1. _Make the notebook visible to the public._ This is accomplished by clicking the "Share" button at the top of the page and changing the "Access" settings for the Public to "Can view". 2. _Copy the Notebook URL in the same "Share" panel._ Feel free to use either an automatically-generated or custom URL. 3. In the markdown block below, _please fill out the following information._ The "Notebook URL" is the URL you copied in Step 2. **Not filling out the details below will result in a 0 for this assignment!** 4. _Download the notebook as a `.tgz` zip file._ This can be done by: 1. Scroll up to the top of the notebook, and click the "..." button. 2. `Export` -> `Download Code`. This produces a `.tgz` zip file. 3. On Brightspace, _navigate to "Assignments" and locate the corresponding assignment submission page._ 4. _Upload the `.tgz` zip file._

Please make sure to:

Read ALL instructions carefully for each part of this assignment; the code should try to match exactly the requirements specified!
Check your SHARE URL link in the markdown box, alongside your Name and NetID, before submitting!