Tableau：如果在 for 循环中，如何进行计数？

Question

I'm just starting off Tableau and would like to do a count if in a for loop.

I have the following variables:

• City
• User
• Round: takes values of either A or B
• Amount

I would like to have a countif function that shows how many users received any positive amount in both round A and round B in a given city.

In my dashboard, each row represents a city, and I would like to have a column that shows the total number of users in each city that received amounts in both rounds.

Thanks!

Answer 1

You can go for a simple solution that works.

1. Create a calculated field called "Positive Rounds per User" using the below formula:

// counts the number of unique rounds that had positive amounts per user in a city

{ FIXED [User], [City]: COUNTD(IIF([Amount]>0, [Round], NULL))}

2. You can use the above to create another calculated field called "unique users":

// unique number of users that have 2 in "Positive Rounds per User" field

COUNTD(IIF([Positive Rounds per User]=2, [User], NULL))

You can combine the calculation of 1 and 2 into one but it gets complex to read so better to split them up