Understanding the basics of parameters
Parameters and using them are considered an intermediate to advanced Tableau function. Parameters are workbook variables that require a calculation, a filter, or a reference line to have value at the worksheet or dashboard level. Parameters can be boosted further with nearly unlimited use cases when actions are utilized.
The data types that can be used for a parameter are floats (numbers with a decimal point), integers (whole numbers), strings, Booleans (true/false), dates, and date and time values.
Parameters can be fixed based on user input values or be dynamic based on fields coming in from a data source. For example, a common parameter that is dynamic is Date, where you can modify the dates available based on a date field in your data source – when that data updates, so do the available options.
Parameters can be shown on dashboards and worksheets, but can only be used if they are incorporated with a worksheet. When appearing...
