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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99
4.6 SVG
変換を行う順番が重要です。時計回りに 45 度回転してから x 軸に沿って平行移動すると要素は南東
方向に移動しますが、逆順に操作すると左に移動してから回転します。
4.7.9
グループ
可視化を作成しているときには、視覚要素をグループ化しておくと多くの場合で便利です。
2
つ
の特定の用途を以下に示します。
•
局所座標系が必要な場合（例えば、アイコンのテキストラベルの位置を
<svg>
キャンバス全体
ではなくアイコンに相対的に指定したい場合）。
•
拡大縮小や回転変換を視覚要素の一部に適用したい場合。
SVG
にはグループ化のためのグループタグ
<g>
があります。
<g>
は
<svg>
キャンバス内のミニ
キャンバスと考えられます。グループにグループを含めることができ、柔軟な幾何学的マッピング
が可能です
†
。
例
4-5
はキャンバスの中央に形をグループ化し、図
4-16
を作成します。
circle
、
rect
、
path
要素の位置は平行移動したグループに相対的になります。
例
4-5
SVG
形状のグループ化
<svg id="chart" width="300" height="150">
<g id="shapes" transform="translate(150,75)">
<circle cx="50" cy="0" r="25" fill="red" />
<rect x="30" y="10" width="40" height="20" fill="blue" />
<path d="M-20 ...
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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.