August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
数据准备规划
｜
35
这样我们就得到了一个漂亮的、干净的数据集，当我们在第四步也就是最后一步输
出数据集时，就可以对数据进行分析了（见图
3-8
）。
我们可以用几种方式输出数据集，但如果要在
Tableau Desktop
中进行分析，那么
Hyper
文件是一个不错的选择。输出选项将在第四部分详细介绍。
如果想自己进行练习，可参考本书的网站，访问所有使用到的文件。
图
3
-
8
：重新组织后的数据
3.5
小结
通过规划数据准备工作，不仅能更专注于数据准备的任务，而且如果准备分析这些
数据时，你也能够有一个坚实的工作基础。其中一些技术是具有挑战性的，特别是
第一次应用这些技术时，但理解和实践这些技术将能提高你成功的概率。输入和输
36
｜
第
3
章
出数据集可能是庞大而复杂的，因此在规划过程中可能需要投入大量的时间，然后
才能开始在数据处理过程中取得进展。想要直接深入了解这些数据是很正常的，并
且从长远来看，这种规划过程中付出的努力都将得到回报，它能减少你在数据分析
中遇到的障碍，或降低使用其他偏离正轨方式带来的操作风险。
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.