topic Re: Need help with expression in QlikView

Need help with expression

Fri, 29 Apr 2016 08:59:54 GMT

Hi all!

Here is my problem: I have two dimensions, A and B, and I have data C: C=AxB (there is C value for each pair (A,B)). Also, I have a formula: KPI=A*1000/(C*10*B). So, I have to get A-values, for which KPI, calcuted with grouping by B field, is MAX.

I know how to calculate MAX KPI grouping by B field:

=aggr(max(aggr(A*1000/(C*9.81*B),A,B)),B),

but how to get B value?

Re: Need help with expression

sunny_talwar — Fri, 29 Apr 2016 17:26:59 GMT

Can you provide some sample data with expected output to try out what you are looking for?

Re: Need help with expression

Tue, 03 May 2016 11:34:55 GMT

Hi, Sunny T!

Thak you for your attention!

First thing I have to edit my question: " but how to get A value?"

Here is the data to load:

LOAD A, B, C,

A*1000/(C*9.81*B) as KPI

INLINE

[A, B, C

20, 8, 312

20.5, 8, 321

21, 8, 330

20, 8.5, 294

20.5, 8.5, 300.5

21, 8.5, 307

20, 9, 275

20.5, 9, 282

21, 9, 289]

I decided to calculated KPI already in script.

So here is what we have (pivot table for better understanding). I want to get something like this:

newA newB

20 8

21 8,5

20 9

I need newA and newB for my linear diagram.

Re: Need help with expression

sunny_talwar — Tue, 03 May 2016 12:58:51 GMT

Are you looking for this?

Expression: Max(TOTAL <B> KPI)

Re: Need help with expression

Tue, 03 May 2016 13:36:09 GMT

Exactly!

Thank you very much!

Re: Need help with expression

oknotsen — Tue, 03 May 2016 14:15:55 GMT

If your question is now answered, please flag the Correct Answer and possible Helpful Answers.

If not, please make clear what part of this topic you still want discussion on .

Re: Need help with expression

Wed, 04 May 2016 14:48:15 GMT

Hi!

Thanks for help once more:) But I still can't build what I want..

My purpose is a linear diagram: horizontal axis(dimension) - B, and expression should return optimal A (A, where we have max(KPI) grouping by B).

Output for sample data I gave above mentioned to be like this (in numeric view):

B - 8, A - 20

B - 8.5, A - 21

B - 9, A - 20.

Is it possible?

Re: Need help with expression

sunny_talwar — Wed, 04 May 2016 16:12:49 GMT

This?

Dimension: B

Expressions

1) =FirstSortedValue(A, -KPI)

2) =Max(KPI)

Re: Need help with expression

Thu, 05 May 2016 10:45:53 GMT

Thank you! Now it works!