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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96
4 章 Web 開発の基本
ます。
#chart {
background: #eee;
font-family: sans-serif;
}
#chart text{ font-size: 16px }
#chart text#title{ font-size: 18px }
■
なお、
text
要素はチャートの
CSS
から
font-family
と
font-size
を継承します。
text
要素を指
定する必要はありません。
4.7.7
パス
パスは最も複雑で強力な
SVG
要素です。閉じたり塗りつぶすことができる多線多曲線要素パス
を作成するので、ほぼすべての形を描くことができます。簡単な例として、ダミーチャートに折れ
線を追加して図
4-12
を作成します。■
図
4-12
の赤いパスは、以下の
SVG
で作成します。
<path d="M20 130L60 70L110 100L160 45"></path>
path
の
d
属性には、赤い線を作成するために必要な一連の操作を指定します。この操作を分解
してみましょう。
• M20 130
：座標
(20, 130)
に移動する
• L60 70
：
(60, 70)
に線を引く
• L110 100
：
(110, 100)
に線を引く
• L160 45
：
(160, 45)
に線を引く
d
はペンをある点に移動させる命令と考えられ、
M
はペンをキャンバスから持ち上げます。
多少の
CSS
スタイルが必要です。
fill
は
none
に設定します。そうしないと、塗りつぶし領域
を作成するために終端から開始点まで線を引いてパスを閉じ、囲まれた領域がデフォルト色の黒で ...
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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.