Variance column for Dynamically selected columns

[bjackson2760]

Greetings,

I have a matix that consist of dynamic columns. The data consist of reports that are Jan-Dec.  Each month has it's own Jan thru Dec totals in each file, see below left side.  Currently I am testing Jan-Mar first.   I would like for whichever columns are selected by the user to equal a measure which is the "variance" column.  Is this possible?  See below picture.  Any assistance would be greatly appreciated.  I need a "variance" column to replace the "Total" column.

[bjackson2760 · Accepted solution]

Thanks everyone.  I found it on another thread.  I found this code and used it, but it only worked once I have a sum total next to it.

var mmax = CALCULATE(max(DataProfile[Units]),allselected(Contacts[Name]))
var mmin = CALCULATE(min(DataProfile[Units]),allselected(Contacts[Name]))
return mmax-mmin

I will come return to give credit.  Thanks. 

[bjackson2760]

His user name is "Ibenlin".

[lbendlin]

Option 1. Remember that your measure is calculated four times in a matrix visual. Change the formula for the column totals to variance

Option 2. Alternatively consider using visual calculations.

[bjackson2760]

Thank you, I will try that and get back to you.  Besides just changing the option to variance which looks crazy, it gives me zeros.

[bjackson2760]

yeah, that's not going to work.  I need a variance for 2 selected months.  I'll just let him know that is the limit and makes sense.

[Ashish_Mathur]

Hi,

So if you have selected 3 months (as shown in the picture), then how should variance be calculated?

[bjackson2760]

Thanks Ashish.  I need a variance for 2 selected months.  I'll just let him know that is the limit and makes sense.

[bjackson2760]

I am suggesting to my client that they only compare 2 at a time or do a visual.  Two is difficult enough,also it would make any sense to try to get a variance from 3 or more.  

Thank you, I have posed that very question to him, I am awaiting feedback. 🙂