July 2017
Intermediate to advanced
398 pages
11h 54m
Chinese
Content preview from Python数据处理
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展示数据
｜
211
一个文件，需要调用一个不同的方法。
pygal
提供了几个选项，对应不同的文件类型：
worldmap_chart.render_to_file('world_map.svg')
worldmap_chart.render_to_png('world_map.png')
如果在渲染地图时有任何的问题，确保所有的依赖库已经安装。如果电脑上
没有
.svg
文件查看器，你可以在浏览器中打开
.svg
文件。
强烈建议你查看除
.svg
之外
pygal
提供的其他选项。文档中有很多实例，高级的和简单的
都有，对初学者来说，它也是一个很容易使用的
.svg
库。
10.2.4
交互式元素
交互式元素通过网站交互或模拟讲故事。因为用户可以通过浏览器四处点击和探索，所以
他们可以以自己的节奏了解这个主题，从数据中得出自己的结论。这对于需要更加深入研
究才能充分理解的主题特别有用。
作为对最近在美国麻疹疫情爆发的回应，英国《卫报》制作了一个疫情爆发交互式网
页（
https://www.theguardian.com/society/ng-interactive/2015/feb/05/-sp-watch-how-measles-
outbreak-spreads-when-kids-get-vaccinated
），允许用户查看和回放拥有不同疫苗接种率的各
地区爆发潜在麻疹疫情的影响。这个交互式网页展示了《卫报》工作人员研究和编码的不
同场景。不是每一种模拟都得到相同的输出，用户可以看到有一个展示接种率的控件，并
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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.