I am learning Tableau using sample dataset Sample Superstore. I am trying to find out, For a given period let us say January 2012, what percentage of sales were shipped using a specific product container (e.g. Jumbo Box)
When containers are in Rows, I get 2.22% and when I flip row to column and vice-versa I get 9.17%. Would appreciate some inputs to clarify this.
2.22%
9.17%
When you use table calculation the values will differ according to the viz and what type of calculation you have used. For example table down will calculate from top to bottom and table across will calculate from left to right. Like this you will see many other options for calculations.
In below example I have used running total with table across that is direction from Left to Right column values (2014,2015,2016,2017,2018).
Example:
Image1 - Original Data(without table calculation)
Data with table calculation - running total(table across)
In below image, Left to Right values are Ship Dates against Segments. Look at the Yellow color highlighted row. Year 2015 for Consumer Segment the sales value is 40,656 but in the original data(Image1) it is 24,635. The reason it is showing 40,656 is because table calculation is performed with running total by table across(left to right), so the original value 24,635 is added with previous Year's(2014) value 16,021. Hence 16021 + 24635 = 40656. It means Left value(16021) is added with the Right value(24635). This pattern will continue till the right most value.
Image2
Columns and rows are switched
In below image(Image3) Left to Right values are Segments against Ship Dates. The Columns and rows are switched. The value of Corporate Segment for the Year 2014 is changed to 25950(blue circle) because the left side value 16021 is added with the original value 9929(Image1).
Image3
