August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
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118
｜
第
14
章
图
14
-
1
：可视化单一度量数据字段
图
14-2
所示为我们要实现的可视化。
图
14
-
2
：从行到列转换后的数据可视化效果
14.2
如何将行转为列
我们来看看如何将行转为列。
1
．
在转换步骤中，使用
Pivoted Fields
（转换字段）窗格右上方的下拉菜单，选择
Rows to Column
（行到列）转换选项（见图
14-3
）。
｜
119
将行转为列
图
14
-
3
：选择 Rows to Column（行到列）转换选项
2
．
在
Pivoted Fields
（转换字段）窗格中添加
Measures
（度量）字段，将显示数据
中的每个类别（见图
14-4
），并在该字段中创建一个新的列。
图
14
-
4
：设置字段以创建新的列头
3
．
在
Field to aggregate for new columns
（新列汇总字段）的列头下，将包含新列
头值的字段添加到
Pivoted Fields
（转换字段）窗格的下半部分（见图
14-5
）。
这里需要选择如何汇总多行数据。汇总操作将发生在该步骤左侧窗格中所显示的这
个层次的内容上，其相当于左侧窗格中字段的
Group By
（分组，见第
15
章）。
现在我们有了一个更容易分析的数据形式，图
14-6
展示了结果的散点图。
120
｜
第
14
章
图
14
-
5
：设置新的列头值
图
14
-
6
：转换后数据的散点图 ...
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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.