November 2019
Intermediate to advanced
472 pages
9h 23m
Japanese
Content preview from Rグラフィックスクックブック 第2版 ―ggplot2によるグラフ作成のレシピ集
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レシピ
10.5
凡例のタイトルを変更する
261
scale_fill_hue(guide = guide_legend(reverse = TRUE))
レシピ
10.5
凡例のタイトルを変更する
問題
凡例のタイトルテキストを変更したい。
解決策
labs()
を使い、
fill
、
colour
、
shape
など、凡例に適切なエステティック属性の値を設定します（図
10-8）。
#
基本プロットを作成
pg_plot <- ggplot(PlantGrowth, aes(x = group, y = weight, fill = group)) +
geom_boxplot()
pg_plot
#
凡例のタイトルを
"Condition"
に設定
pg_plot + labs(fill = "Condition")
図10-8 凡例タイトルを"Condition"に設定
解説
スケール指定時に凡例のタイトルを設定することもできます。凡例と軸はどちらもガイドなので、
x
軸や
y
軸のタイトルと同じように凡例のタイトルも設定できます。
このコードは前のものと同じ効果があります。
262
10
章 凡例
pg_plot + scale_fill_discrete(name = "Condition")
エステティック属性にマッピングする凡例付 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.