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Tableau Dashboard Cookbook by Jen Stirrup

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Using parameters in dashboards

Parameters are dynamic "placeholders" that can help to control the dashboards' appearance by storing information to drive the flexibility of the dashboard.

Parameters make our visualizations more accurate by controlling which data is to be displayed and which is to be hidden in response to user input. In this recipe, we will look at using parameters to drive the display and look at enhancing the accuracy of the presentation by controlling the inclusion of NULL values on the dashboard.

If NULL values are present in the data, the resulting representation may be misleading. On the other hand, NULL values may be useful because they could tell us about the quality of the data itself. Sometimes, the data visualization project ...

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