Expression using Rangesum

[#1]

Hi,

My requirement is do do sum of below rows which I am able to achieve partially using following expression.

Expression for 'Sum Amount' is

=rangesum(Before(sum(Amount),0,4))

Product	Month	201102	201103	201104	201105	201106	201107	201108	201109
001801	Amount	125464	152019	139180	143548	153559	137264	164853	314758
001801	Sum Amount	125464	277483	416663	560211	588306	573551	599224	770434

But this expression considers only those months which are selected in the report. For ex if I select months from 201103 to 201109, expression doesn't consider month 201102.

Product	Month	201103	201104	201105	201106	201107	201108	201109
001801	Amount	152019	139180	143548	153559	137264	164853	314758
001801	Sum Amount	152019	291199	434747	588306	573551	599224	770434

My requirement is to get following even if selection is made on month

Product	Month	201103	201104	201105	201106	201107	201108	201109
001801	Amount	152019	139180	143548	153559	137264	164853	314758
001801	Sum Amount	277483	416663	560211	588306	573551	599224	770434

Can some explain me if I can achieve this at front end level, if not how to define this at script level.

rangesum(Before(sum(Amount),0,4)) doesn't work at script level.

Thanks a lot for your help

Regards

Shilpa

[#2]

Hello,

Can you provide some pointers on how to calculate cumulative sum of previous rows at script level.

Thanks and Regards

Shilpa

[Miguel_Angel_Baeyens]

Hi Shilpa,

This thread and this other one have some working examples on how to get accumulations in the script based on current record values against previous record values. Basically you will need to do a ordered load based on your criteria and create a new field that stores the accumulated value and is aclled using Peek()

Hope that helps.

Miguel Angel Baeyens

BI Consultant

Comex Grupo Ibérica

[#4]

Thanks a lot for the prompt response. I will look into the threads you suggested.

Thanks

Shilpa