Create a custom static table using DAX

[fnyameino]

I am trying to design this chart in powerbi. The x axis contains different time limits. 

Currently this is design in excel and the table below is the source of data

Average Tests
March	2
April 1 - 28	4
April 29 - July 17	56
July 20 - Oct 9, 2020	63
Oct 12 2020-Nov 11, 2022	15

This table is created after getting average test from the same column on a different table below

Date	Number of Tests
03/09/20	1
03/10/20	2
03/11/20	1
03/12/20	0

Currently powerbi has access to the primary dataset below

Date | Name| Race/Ethnicity | Result

My inital thought was using DAX ROW or DATATABLE to create a Virtual or static table and use the average function to get the numbers. I am stuck!!! I will honestly appreciate any help provided.

[FreemanZ · Accepted solution]

hi @fnyameino

If your categorization is static, the easiest way would be to add a category column in your record table. Then you could  pull the category column to your plotting x-axis. 

the code to add the column looks like this:

Category =

SWICH(

    TRUE(),

    "March", TableName[Date]<=DATE(2020,3,31),

    "April 1- 28", TableName[Date]<=DATE(2020,4,28),

    "April 29- July 17", TableName[Date]<=DATE(2020,7,17),

    "July 20- Oct 9 2020", TableName[Date]>=DATE(2020,7,20)&&TableName[Date]<=DATE(2020,10,9),

    "Oct 12 2020- Nov 11, 2022", TableName[Date]>=DATE(2020,10,12)&&TableName[Date]<=DATE(2022,11,11)

)

if you have a dynamic grouping, say the way of categorization changes periodically and you find the change in DAX code is an issue, you may import the category table into Power BI and related with the record table. 

[fnyameino]

This worked the magic

Category =

VAR DateNow = TODAY()

RETURN

SWITCH(

    TRUE(),

    CovidTesting[Date]<=DATE(2020,3,31),"1. March" ,

    CovidTesting[Date]<=DATE(2020,4,28), "2. April 1-28",

    CovidTesting[Date]<=DATE(2020,7,17), "3. April 29-July 17",

    CovidTesting[Date]>=DATE(2020,7,20)&&CovidTesting[Date]<=DATE(2020,10,9), "4. July 20-Oct 9 2020",

    CovidTesting[Date]>=DATE(2020,10,12)&&CovidTesting[Date]<= TODAY(),"5. Oct 12 2020-Dec 13 2022"