Tableau Prep - The Cleaning Step
The Context for Cleaning Data can be unready for analysis for a lot of reasons. If you need to do things that have nothing to do with shaping the data (like pivoting or aggregating) or combining it (through joins or unions), then it’s likely you’ll need to perform some cleaning operations. Cleaning in Tableau Prep covers everything from removing fields, changing data types, creating calculated fields, and more. How to Clean Cleaning data in Tableau Prep is done in a Cleaning step in the flow. From the previous step, click the plus icon and choose “Add Step”. The “ default ” step is a cleaning step, which appears in the flow as a bar. When we’re on a clean step, below we see the profile pane and data grid. Each field in the data is represented as a card in the profile pane. We can rename fields or change their data type by interacting directly on a card. If we open a card’s menu, we see many other options. Let’s go through brief examples of each of these. Remove Field : First...
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