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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432
20 章 メニューバー
ラジオボタンフォームが用意できました。あとはすべての入力を選択し、変更を引き起こすボタ
ン押下に対応するコールバック関数を追加するだけです。
d3.selectAll('#metric-radio input').on('change', function() {
var val = d3.select(this).property('value');
nbviz.valuePerCapita = parseInt(val); #
❶
nbviz.onDataChange();
});
❶
onDataChange
を呼び出して視覚要素の再描画を開始する前に
valuePerCapita
の値を更新する。
ボタンの現在の状態を
valuePerCapita
整数に格納します。ユーザがラジオボックスを選択する
とこの値が変わり、
onDataChange
によって新しい受賞者数スケールで再描画されます。
これで
Nobel-viz
にメニューバー要素を追加できたので、ユーザが表示するデータセットを精査
して最も関心があるサブセットに絞り込むことができます。
20.3
まとめ
本章では、ノーベル賞可視化にセレクタやラジオボタン要素を追加する方法を説明しました。ボ
タングループ、チェックボックスのグループ、時間選択、普通のボタンなど、他にも多くのユーザ
インタフェース
HTML
タグがあります
†
。しかし、このようなコントローラの実装には本章で示し
たものと同じパターンを利用します。データのリストを使って ...
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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.