From e16464efb60cfdcb0c17479b4956538aeaabf057 Mon Sep 17 00:00:00 2001
From: Jakob Krigovsky <jakob@krigovsky.com>
Date: Wed, 13 Apr 2022 16:19:26 +0200
Subject: [PATCH] Update reference to ggplot2 book (#1007)

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 communicate-plots.Rmd | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/communicate-plots.Rmd b/communicate-plots.Rmd
index 4fa2033..ba8ca7b 100644
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@@ -683,9 +683,8 @@ The chunk label is used to generate the file name of the graphic on disk, so nam
 
 ## Learning more
 
-The absolute best place to learn more is the ggplot2 book: [*ggplot2: Elegant graphics for data analysis*](https://amzn.com/331924275X).
+The absolute best place to learn more is the ggplot2 book: [*ggplot2: elegant graphics for data analysis*](https://ggplot2-book.org).
 It goes into much more depth about the underlying theory, and has many more examples of how to combine the individual pieces to solve practical problems.
-Unfortunately, the book is not available online for free, although you can find the source code at <https://github.com/hadley/ggplot2-book>.
 
 Another great resource is the ggplot2 extensions gallery <https://exts.ggplot2.tidyverse.org/gallery/>.
 This site lists many of the packages that extend ggplot2 with new geoms and scales.