power bi desktop calculate current cell from previous cell in same column

[Nathan__Mox]

Hi all,

I'm trying to figure out forecast stock level for the quarter by weeks. I have done this by doing this calculation in a new column (on hand + inbound item qty) - max sales qty = forecast stock level. An example is below:

item code.	on hand.	inbound items.	max sales.	date.	forecast stock level.
A	500	200	250	8/7/22	450
A	500	400	250	15/7/22	650
A	500	0	250	22/7/22	250
A	500	500	250	29/7/22	750
A	500	150	250	5/8/22	400

However, I want the Later Dates to be calculated by (previous stock level row + inbound items) - max sales = forecast stock level. I also want this for multiple item code but for it to be unique to each item code. An example of what i want it to look like below:

item code.	on hand.	inbound items.	max sales.	date.	forecast stock level.
A	500	200	250	8/7/22	450
A	500	400	250	15/7/22	600
A	500	0	250	22/7/22	350
A	500	500	250	29/7/22	600
A	500	150	250	5/8/22	500

If anyone can help me out I would be very grateful.

Thanks

[amitchandak · Accepted solution]

@Nathan__Mox , Suggesting a measure with help from date table

Inventory / OnHand
CALCULATE(firstnonblankvalue('Date'[Month]),sum(Table[On Hand),all('Date')) + CALCULATE(SUM(Table[In Bound]),filter(date,date[date] <=maxx(date,date[date]))) - CALCULATE(SUM(Table[outbound]),filter(date,date[date] <=maxx(date,date[date])))

a new column

[on Hand] + sumx(filter(Table, [date] <= earlier([Date]) && [Item code] = earlier([item code]) ), [Inbound] - [outbound ] )

[Nathan__Mox]

have you managed to figure out a calculation for my previous issue?

[Nathan__Mox]

hey @amitchandak, thank you for giving me a solution. After puuting the calculation in I realised that the current week or first date (In my example 8/7/22) should actually just equal the on hand value as the on hand value has already had the current weeks (8/7/22) inbound items added and sales subtracted. so at the moment with current calculation im sort of adding twice to current week and subtracting twice. I was hoping you could give me a new calculation to include this please.

If any more context is need let me know.

Thank you