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.
68
4
章 折れ線グラフ
図4-9 左：点の形を変えた折れ線グラフ 右：点の塗りつぶし色を変えた折れ線グラフ
折れ線の点が重なってしまうことがあります。この場合には、重複する点をずらす（ドッジ（
dodge
）
を使用する）、すなわち点同士の左右の位置を調節する方法があります（図4-10）。このとき、点の位置
に合わせて線も調節する必要があります。こうしなければ、点の位置だけが移動して点と線が揃わな
くなってしまいます。また、点と線をずらす距離の指定も必要です。
ggplot(tg, aes(x = dose, y = length, shape = supp)) +
geom_line(position = position_dodge(0.2)) + #
線を
0.2
だけずらす
geom_point(position = position_dodge(0.2), size = 4) #
点を
0.2
だけずらす
図4-10 重複を避けるために点をずらす
レシピ
4.4
線の体裁を変更する
問題
折れ線グラフの線の体裁を変更したい。
レシピ
4.4
線の体裁を変更する
69
解決策
折れ線の種類（実線、破線、点線など）は
linetype
で、太さ（ミリ単位）は
size
で、色は
colour
（ま
たは
color
）で指定し
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.