August 2017
Intermediate to advanced
500 pages
12h 3m
Japanese
Content preview from PythonとJavaScriptではじめるデータビジュアライゼーション
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.
229
10.4 図とオブジェクト指向 Matplotlib
イスは、現在の図で
set_tight_layout
メソッドを使うということです。
plt.gcf().set_tight_layout(True)
10.3.6
グラフの保存
特筆すべき
Matplotlib
の領域の
1
つは、プロットの保存において多くの出力フォーマットが
用意されていることです
†
。利用できるフォーマットはバックエンドによりますが、一般的には
PNG
、
PDF
、
PS
、
EPS
、
SVG
をサポートしています。
保存は次のように簡単です。
plt.tight_layout() #
図の寸法にプロットを押し込む
plt.savefig('mpl_3lines_custom.svg')
format="svg"
とすればフォーマットを明示的に設定できますが、未設定でも
Matplotlib
は
.svg
拡張子を判断できます。ラベルが切り捨てられないようにするには、
tight_layout
メソッドを使っ
てください
‡
。
10.4
図とオブジェクト指向
Matplotlib
先ほど述べたように、
Pyplot
のグローバル状態の対話的な操作は、データの概略を簡単に把握
したり、単一のプロットの作成ではうまくいきます。しかし、グラフを細かく制御したい場合に
は、
Matplotlib
の
figure
や
axes
の
OOP
手法が最適です。より高度なプロットのほとんどの例は
この手法で実行します。
基本的に、
OOP Matplotlib
では
figure
を扱います。
figure
は、
1
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.