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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403
18.5 地図の更新
/*
ノーベル賞用の地図のスタイル
*/
#nobel-map {
background: azure;
}
.graticule {
fill: none;
stroke: #777;
stroke-width: .5px;
stroke-opacity: .5;
}
.land {
fill: #ddd;
}
.boundary {
fill: none;
stroke: #fff;
stroke-width: .5px;
}
SVG
地図が作成できたので、受賞者データセットを使って受賞国と受賞数を示す赤い丸印を描
画してみましょう。
18.5
地図の更新
ノーベル賞地図を最初に更新するのは、可視化を初期化するときです。この時点では選択した
データセットはフィルタリングされておらず、全受賞者が含まれます。その後のユーザのフィルタ
適用に応じて（化学賞受賞者全員やフランスの化学賞受賞者など）、データセットが変化し、それ
図
18-4
基本地図
404
18 章 D3 を使った地図の作成
を反映して地図も変化します。
そのため、地図の更新には、ユーザが適用したフィルタに対応した受賞国と各国の現在の受賞者
数のデータセットを地図に送る必要があります。これを行うには
updateMap
メソッドを使用できま ...
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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.
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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.