Lecture 3.1 - Colors and Color maps, Types of viz
How do colors work? What are the different ways we can map colors to values? What should we keep in mind when doing this?
Types of Viz and Choosing Colors
This week, we will cover a bit about colors, and more about data transformations, and how we can choose colors and transforms to better suit our data.
We also did some basics of Pandas last week and we’ll continue this week.
Note there are a variety of notebooks from previous iterations of this course listed under the Materials subsection of today’s lecture. The “furtherExamples” notebooks are just there as reference, we will not be going through them by hand.
References
- Pandas vs. Matplotlib
- IS452’s Dictionary week
- Colors: RGB color triplets
- While we won’t be using Whole Tale for this lecture, it was used for the last iteration of this course and you should feel free to go through the code walk-throughs presented there by Matt Turk - just search for “IS590” under the Browse Tales header.
Optional Reading List
- VAD, Ch. 10: Map Color and Other Channels
- FDV, Ch. 4: Color scales
- VAD, Ch. 5: Marks and Channels
- Perception in Visualization (pay extra attention to the parts about color)
- Palettable Docs
Lectures
Examples
Prep Notebook, Week 3 - (download)
Prep notebook for this week
In class notebook, Week 3 - (download)
Prep notebook for this week
Past Notebook: fall2019_prep_notebook_furtherExamples_01.ipynb - (download)
Past Notebook: fall2019_prep_notebook_furtherExamples_02.ipynb - (download)
Past Notebook: fall2019_prep_notebook_furtherExamples_03.ipynb - (download)
Past Notebook: spring2019_prep_notebook_furtherExamples_week03.ipynb - (download)
Past Notebook: spring2019_prep_notebook_week03_part1.ipynb - (download)
Past Notebook: spring2019_prep_notebook_week03_part2.ipynb - (download)
Python Libraries
Palette Colors (palette_colors.py)
Python library, save to notebook folder or modify your path if you know how to do that
Data
Illinois buildings dataset
Measurments taken from around Lake Michigan (https://www.ngdc.noaa.gov/mgg/greatlakes/michigan.html)
MRI scan of a brain