Calculated field with matrix

[c5966]

I need some support in calculated field in matrix table. Any help is much appreciated.

I have 2 columns 

CLASS_CONF and Change_class (which has 2 seperate values ClassChange and NoClassChange).

Original Table:

I need to have a calculated column as below.

Matrix and red column is expected column: 

Thank you

c5966

[Nathaniel_C]

Hi @c5966 ,

If I understand that you are looking for a Dax formula, try Accuracy = Divide([No Class Change], [Class Change] + [No Class Change]). For the first line in your matrix, you would have the result below. 

If this solves your issue, please mark this as the solution. Kudos are nice too!

Nathaniel

[c5966]

Appreciate your help.

Accuracy = Divide([NoClassChange],[ClassChange]+[NoClassChange])

This DAX formula did not give expected output ,please see below screenshot.

I would really appreciate any help on this topic.

Thank you.

[Nathaniel_C]

@c5966 

My table with measure just make sure it is formatted for percentage

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If this solves your issue, please mark this as the solution. Kudos are nice too!

Nathaniel

[c5966]

Also my NoClassChange column is calculated column:

it has one and 0 values

NoClassChange = if(export_lbj_8753[Change_Class] = "NoClassChange", 1,0)

ClassChange = if(export_lbj_8753[Change_Class] = "ClassChange",1,0)

how do we create divide formula on aggregated data? for this calculation.

[c5966]

thanks for the quick resonse. 

I have a questin, is it a caculated measure or calculated column which you have created below?

Thanks

[Nathaniel_C]

@c5966 

You are right, calculated column is what it is as opposed to a measure.  Working on another project, and was to quick with my answer.

So did this answer your issue?

[Nathaniel_C]

@c5966 

Not sure what you are asking...should be the same with 1 or 0. Just reference the column name. Divide will return a blank unless you give it an alternative return for a divide by zero. See Dax Divide on the web:

Syntax

DAXCopy

DIVIDE(<numerator>, <denominator> [,<alternateresult>])  

Parameters

Term Definition

numerator	The dividend or number to divide.
denominator	The divisor or number to divide by.
alternateresult	(Optional) The value returned when division by zero results in an error. When not provided, the default value is BLANK().

Return value

A decimal number.

Remarks

Alternate result on divide by 0 must be a constant.

If this answers you issue please mark as the solution.

Nathaniel

[c5966 · Accepted solution]

Thank you for your help

I understood how to do this, first I need to group my class confidence and then use your divide function.

Accuracy = CALCULATE(divide(sum('table'[NoClassChange]), sum('table'[ClassChange])+sum('table'[NoClassChange])), fILTER(ALL('table'), 'table'[MEDTR_FRONT_VDAC_CLASS_CONF] = EARLIER('table'[MEDTR_FRONT_VDAC_CLASS_CONF])))