Being able to create custom calculations is a very useful functionality of any tool. It gives the user an immense flexibility and power to do a lot of things. However, there are times when we would want to go beyond the calculations that are based on static hard coded conditions. So, for example, in the Logic statement that we saw earlier, we had hard coded the Sales Target value to 100K. Now the problem is that as we continue with our business, the 100K target may soon become redundant and the calculations will soon have to be revisited. Plus, hard coding the Target at the development stage may not be a good idea as the end user may have some different values in mind. In this case, it makes sense to have the option where, the end user can pass certain values at the viewing level.
To address the preceding requirement, we will use the parameter functionality provided by Tableau. Parameters are controls that can be given to the end user to dynamically...
