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
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223
10
章
Matplotlib
を使った
データの可視化
データ可視化を行う者として、データセットのまとめや改良につながるあらゆる種類の図やプ
ロットを、使ってデータを把握するために対話的に可視化することが理想です。これまでは、探
索段階の成果を静的な図として表していましたが、徐々にその静的な図から素晴らしい
D3
可視化
（どこかで見たことがあるでしょう）などによる、もっと魅力的なインタラクティブな
Web
ベー
スの図を作成できるようになってきました（その一部を第Ⅴ部で作ります）。
Python
の
Matplotlib
とその拡張機能群（統計に特化した
Seaborn
など）は、成熟したカスタ
マイズ可能なプロットエコシステムを形成しています。
Matplotlib
プロットは
IPython
（
Qt
や
Notebook
バージョン）で対話的に使用することで、直観的にデータ内の興味深い貴重な情報を探
すことができます。本章では、
Matplotlib
とその優れた拡張機能の
1
つ
Seaborn
を紹介します。
10.1
pyplot
とオブジェクト指向
Matplotlib
Matplotlib
は、特にオンラインで無作為にサンプルを抽出してすぐの場合には、わかりにくい
ところがあります。複雑になってしまう原因は、プロットを作成する方法が主に
2
つあり、その
2
つの方法が混乱するほど似ているのに、多くの苛立たしい間違いを引き起こすほどに異なることで
す。
1
つ目の方法では、グローバル状態マシンを使って
Matplotlib
の
pyplot
モジュールと直接や ...
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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.