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.
175
7.3 まとめ
7.3
まとめ
本章では
NumPy
の基礎を学び、基本要素の
NumPy
配列（
ndarray
）を重点的に取り上げま
した。
NumPy
を使いこなすことは、
Python
らしくデータを扱うために重要です。
NumPy
は
Python
の本格的なデータ処理の基本ツールなので、その理由だけからも
NumPy
の配列操作に慣
れるようにしておきます。
NumPy
に慣れると
pandas
の作業がそれだけ容易になり、
pandas
のワークフローで科学、工
学、機械学習、統計アルゴリズムに関する豊富な
NumPy
エコシステムを利用できます。
pandas
は
NumPy
配列を
DataFrame
や
Series
などのデータコンテナに隠しますが（データコンテナは異
種データを扱えるように構成されます）、このようなデータコンテナはほとんど
NumPy
配列のよ
うに振る舞い、一般に必要時に適切な動作をします。
ndarray
が中心であることを知っていれば、
課題に
pandas
を適用したいときにも役立ちます。最終的には、要求したデータ操作が
NumPy
と
相性がよくなければいけません。基本要素が得られたので、
pandas
がどのように同種の
NumPy
配列をデータ可視化作業の多くで扱う異種データの領域に広げるかを調べてみましょう。
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.