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NIKKI YU

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Category: Tableau Tips

Posted on March 3, 2022March 3, 2022

How to String Agg a Dimension in Tableau?

Tableau does not have string_agg() function like SQL. I'd like to show list instead of asterisk when multiple values are present. Use Case: my company works with vendors to manufacture products. One product might be manufactured by different vendors . I'd like to show vendors associated with each product. If there are multiple vendors associated …

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Posted on July 28, 2017July 28, 2017

How to Create a Donut Chart in Tableau?

Pie chart might be boring. If you would like to present percentage of total by categories, I highly recommend the donut chart. Based on the different data structures, I will show you how to create a donut chart in two scenarios.

Posted on July 5, 2017July 6, 2017

How to create a stacked bar chart that adds up to 100% in Tableau?

Bar char is probably one of the simplest charts that every data analyst uses all the time. It is simple but very effective. I am working on a web traffic report, which needs to compare website visits by device category (desktop, mobile and tablet) over time. I think a stacked bar chart could be applied …

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Posted on June 21, 2017June 21, 2017

How to create a YoY line graph in Tableau?

Line graph is simple, neat and one of the most popular charts that I use in my work. Today, I want to create a line graph to compare daily revenue with the same day last year. The challenge is that Tableau does not have Month/Day date format. See below: I have been tried several ways. …

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About Me

Nikki Yu

Nikki Yu

Senior Data Analyst in Santa Monica, CA • Story Teller • Data Viz Guru • Data Ninja • Traveller • Master's in Engineering Management • Bachelor's in Computer Science

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