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Cumulative sum?
posted

Hi - Is there any way to do a cumulative sum?

e.g. in QLIK Sense I can do

rangesum(above( sum(BaseTotalPL), 0, rowno() ))

and what this does is give me a cumulative sum for every row.

Why would I want this? Very simply: I need to be able to show cumulative P&L day by day. e.g. $10 on 1/1, $20 on 1/2, so I would show $10 on 1/1 and $30 on 1/2.

In addition I need to show geometric cumulative ROR day by day, which could be expressed as sum of logarithms.