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
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
レシピ
7.2
注釈に数式を使う
173
図7-4 プロット領域の端にテキストを配置
関連項目
テキストを用いた散布図を作成するためには、「レシピ5.11 散布図の点にラベルを付ける」を参照
してください。
テキストの体裁を制御するための詳細は、「レシピ9.2 テキストの体裁を変更する」を参照してくだ
さい。
レシピ
7.2
注釈に数式を使う
問題
数式表記を含むテキスト注釈を追加したい。
解決策
annotate(geom = "text")
を使用し、
parse = TRUE
を設定します（図7-5）。
#
正規曲線
p <- ggplot(data.frame(x = c(-3,3)), aes(x = x)) +
stat_function(fun = dnorm)
p +
annotate("text", x = 2, y = 0.3, parse = TRUE,
label = "frac(1, sqrt(2 * pi)) * e ^ {-x^2 / 2}")
174
7
章 注釈
図7-5 数式表現を含む注釈
解説
ggplot2
の
parse = TRUE
を用いて作成された数式表現は、
R
の
base
パッケージに含まれる
plotmath
や
expression
に近いフォーマットを持っていますが、
ggplot2
では数式
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.