Total Mode: Expression Total - How to get accurate average

[#1]

I have a Chart of calculated averages. I wanted to have a Total Row at the bottom and I'm not sure what 'Expression Total' is calculating but it isn't what I need. Since each calculated value uses a different denominator I need to sum the numerators and divide that by the sum of denominators. Merely Averaging the averages will not work. Am I only able to accomplish this by creating my own Total Row with some complicated expressions? If so how do you reference values from other parts of the Chart.

[diegofcaivano]

I guess you may find useful the DIMENSIONALITY() function.

Add it as a expression to see the relationship between cells. The total cells have a zero dimensionality value, so you can then ask IF(DIMENSIONALITY()=0, ...) and set your own total expression.

Hope this helps.

[#3]

So that might work if I'm calculating an average accross rows but what if I'm calculating averages within each column?

[diegofcaivano]

In that case maybe you'll need to AGGR() the average expression.

Please attach a mock application with this issue so we can help you further.

[whiteline]

Hi.

If it possible with your data model: =Sum(Numerator)/Sum(Denominator)

This usually is a correct way to aggregate on both dimension and total levels.