topic Re: Using RangeSum and Aggr with 3 dimensions in QlikView

Using RangeSum and Aggr with 3 dimensions

Anonymous — Tue, 13 Feb 2018 21:18:06 GMT

Good evening all,

I'm hoping someone will be able to help resolve a conundrum I currently have....

I'm successfully using the below expression to calculate a daily value

sum(aggr(sum({< ReportingDate ={"<=$(=vMaxStockMovementDate)"}, labour_cost -={'0'}, transaction_type ={'COMP','DKIT','RWRK'} >} movement_quantity * usage_quantity*labour_cost),%WHComponent, %WHProduct, ReportingDate))

I'm now looking to apply a rolling average calculation to this using RangeSum and above where vRollingDays is a variable set by a slider (so the user can determine over how many days they want to average the data).

sum(aggr(RangeAvg(above(sum({<ReportingDate ={"<=$(=vMaxStockMovementDate)"}, labour_cost -={'0'}, transaction_type ={'COMP','DKIT','RWRK'} >} movement_quantity * usage_quantity * labour_cost),0,vRollingDays)),%WHComponent, %WHProduct, ReportingDate))

I can't get this to work, nor can I understand the output, however when I've used this structure before but with a single dimension in the aggr it works perfectly.

Any help would be greatly appreciated,

Thanks!

Re: Using RangeSum and Aggr with 3 dimensions

marcus_sommer — Wed, 14 Feb 2018 12:37:24 GMT

I think it should rather look like:

RangeAvg(above(

,0,$(vRollingDays)))

- Marcus

Re: Using RangeSum and Aggr with 3 dimensions

Anonymous — Thu, 15 Feb 2018 10:45:44 GMT

Thanks Marcus, that seems to have done the trick in terms of calculating correctly.

It has thrown out an additional issue....

the date field (ReportingDate) contains data for 5 days rather than 7 in a week (i.e. no data over a weekend), and now the average is taking the blank days.

For example....

Is there anyway to remove this? I assume not as 'ReportingDate' comes from a calendar that includes all dates in the year, and the above calculation includes all dates, not just those with values?

Thanks,

Alex

Re: Using RangeSum and Aggr with 3 dimensions

marcus_sommer — Sat, 17 Feb 2018 10:54:58 GMT

It's not easy to say without deeper insights in your datamodel how it could be solved and which way would be the most elegant. Personally I use for such things a flag within the master-calendar which is 0 or 1 and which I could just aggregate with a sum-function to get the number of working days for the used selection. This could then be used in a logic like sum(value) / sum(workingdayFlag) to get the appropriate average.

Another way of using this flag is as condition within the set analysis, like:

... workingdayFlag = {1} ...

whereby in your case you might need this condition within the inner- and the outer-aggregation. This meant to apply it in this way:

...

sum({< workingdayFlag = {1} >} aggr(sum({< workingdayFlag = {1} ...

...

More to this could you find here: Set Analysis in the Aggr function‌.

- Marcus