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Advanced Data Wrangling and Analysis
- Overview
- Importing Data
- Tidy Data
- Reshaping Data
- Dealing with Missing Data
- Changing Variable Types
- Advanced Variable Creation
- Advanced Summarizing
- Binding Data Frames
- Functions
- Merging Data
- Renaming Variables
- Quick Interlude to Reorganize our Code
- Exporting Data
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Advanced Data Visualization
- Data Visualization Best Practices
- Tidy Data
- Pipe Data Into ggplot
- Reorder Plots to Highlight Findings
- Line Charts
- Use Color to Highlight Findings
- Declutter
- Use the scales Package for Nicely Formatted Values
- Use Direct Labeling
- Use Axis Text Wisely
- Use Titles to Highlight Findings
- Use Color in Titles to Highlight Findings
- Use Annotations to Explain
- Tweak Spacing
- Customize Your Theme
- Customize Your Fonts
- Try New Plot Types
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Advanced RMarkdown
- Advanced Markdown Text Formatting
- Tables
- Advanced YAML
- Inline R Code
- Making Your Reports Shine: Word Edition
- Making Your Reports Shine: HTML Edition
- Making Your Reports Shine: PDF Edition
- Presentations
- Dashboards
- Other Formats
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Wrapping Up
- You Did It!
Going Deeper with R (v1)
Use Annotations to Explain
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This lesson is called Use Annotations to Explain, part of the Going Deeper with R (v1) course. This lesson is called Use Annotations to Explain, part of the Going Deeper with R (v1) course.
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Transcript
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Your Turn
Add an annotation somewhere on your chart to help the reader understand it better
Learn More
The best place to learn about the annotate()
function is the ggplot documentation website. The online version of Hadley Wickham’s book ggplot2: Elegant Graphics for Data Analysis also has a chapter on annotations. And the website R Graph Gallery shows some examples of annotations in practice.
Placing annotations precisely can be challenging. The experimental package gganotate
attempts to make it easier by enabling you to click on your plot and returning the x/y location to put in your code.
If you want to see the example plot used in this lesson, it is on the Financial Times website.
If you want to learn more about the importance of annotation in data visualization, check out this article from Elijah Meeks titled Making Annotations First-Class Citizens in Data Visualization. Also check out this article from Alberto Cairo discussing another example of work from the Financial Times that uses annotations well (folks at the FT are experts at annotations, in case you haven’t yet picked that up!).
I talk a lot in this lesson about colors. If you want to find lighter or darker shades, or just look for colors in general, check out the website coolors.co.
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Vuk Sekicki
May 20, 2021
I wonder how did financial times place those curved arrows, they look so cool.
Hatem Kotb
January 15, 2023
How does x = 2.02 work with a character variable?