-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
9523c15
commit 457890e
Showing
6 changed files
with
352 additions
and
52 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,8 +1,59 @@ | ||
| --- | ||
| title: "Chapter 20" | ||
| subtitle: "Extending ggplot2" | ||
| author: "Aditya Dahiya" | ||
| date: "2024-09-28" | ||
| format: | ||
| html: | ||
| code-fold: true | ||
| code-copy: hover | ||
| code-link: true | ||
| mermaid: | ||
| theme: neutral | ||
| execute: | ||
| echo: true | ||
| warning: false | ||
| error: false | ||
| cache: true | ||
| filters: | ||
| - social-share | ||
| share: | ||
| permalink: "https://aditya-dahiya.github.io/ggplot2book3e/Chapter20.html" | ||
| description: "Solutions Manual (and Beyond) for ggplot2: Elegant Graphics for Data Analysis (3e)" | ||
| twitter: true | ||
| facebook: true | ||
| linkedin: true | ||
| email: true | ||
| mastodon: true | ||
| editor_options: | ||
| chunk_output_type: console | ||
| bibliography: references.bib | ||
| --- | ||
|
|
||
| ::: callout-warning | ||
| Solutions for this chapter are under construction. | ||
| ::: | ||
| ::: {.callout-tip appearance="minimal"} | ||
| This chapter has no exercises. So, I will summarize the key take-aways. | ||
| ::: | ||
|
|
||
| ## 20.1 New Themes | ||
|
|
||
| - **20.1.1 Modifying themes:** | ||
| - Extending ggplot2 is easy and makes it flexible. Themes are the simplest extension type, often involving code similar to standard `ggplot2` plot styling. | ||
| - It is more practical to modify existing themes than create new ones from scratch. | ||
| - Example: `theme_minimal()` is built upon `theme_bw()` using the `%+replace%` operator to change specific elements. | ||
| - **20.1.2 Complete themes:** | ||
| - **Always define themes with `complete = TRUE` to ensure predictable behavior.** | ||
| - A complete theme helps users override settings like axis lines in a consistent manner. | ||
| - **20.1.3 Defining theme elements:** | ||
| - Themes in ggplot2 rely on an element tree, which defines each theme element and its inheritance. | ||
| - New theme elements can be added using `register_theme_elements()`. | ||
| - When defining new theme elements, include your package name as a prefix (e.g., `ggxyz.panel.annotation`) to avoid conflicts with other packages. | ||
|
|
||
| ## 20.2 New Stats | ||
|
|
||
| - **20.2.1 Creating new stats:** | ||
| - Stats offer a powerful way to extend **ggplot2** by focusing on data transformations rather than visuals. | ||
| - While users may prefer to work with geoms, many geoms differ because they utilize different stats. | ||
| - New stats are defined using ggproto objects, specifically by implementing the **`compute_group()`** method, which handles data transformation for each group. | ||
| - It's often a good idea to create both stat\_*() and geom\_*() constructors, as users are more accustomed to geoms. | ||
| - **20.2.2 Modifying parameters and data:** | ||
| - New stats may require additional setup through `setup_params()` and `setup_data()` methods to modify parameters or data before the main computation. |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.