Find Previous Value for a measure with multiple conditions

[Iamnvt]

hi,

I have a model with 2 facts table: Plan and Actual

Four dimension tables: Date, Hour, Product, Line

I need to write a measure (not column) to show the previous value of HC, where for the same line, same product, any date, any hour, if the Plan is blank(), or Plan is 0, and Actual >0, then Previous HC = the most recent HC, where Plan >0

Like this:

here is the PBI file: link

I wrote a measure: 

VAR
__Filtertable  = FILTER(ADDCOLUMNS(CROSSJOIN('Date', Line, 'Product', 'Hour'), "Act", [Sum of Actual], "Pl", [Sum of Plan], "HC", [Sum of HC]),
[Act] + [Pl] <> BLANK())
VAR
__Table1 = ADDCOLUMNS(__Filtertable,
"Previous HC",
  VAR
        __currentdate = FIRSTNONBLANK('Date'[Date],1)
  VAR
        __currentline = FIRSTNONBLANK(Line[Line], 1)
  VAR
        __currentproduct = FIRSTNONBLANK('Product'[Product],1)
  VAR
        __previousdate = CALCULATE(LASTNONBLANK('Date'[Date],1), FILTER(__Filtertable, 'Date'[Date] < __currentdate && Line[Line] = __currentline && 'Product'[Product] = __currentproduct))
   RETURN
        CALCULATE([Sum of HC], FILTER(__Filtertable, Line[Line] = __currentline && 'Product'[Product] = __currentproduct && 'Date'[Date] = __previousdate)
))
RETURN
SUMX(FILTER(__Table1, [Act] > 0 && [Pl] = 0), [Previous HC])

but it doesn't give the result.

please help on this.

Thanks very much

@OwenAuger  : please take a look

[AlB]

Hi @Iamnvt 

why is the second value hand-written in blue 5 and not 10? You're not considering the current date as valid for the "most recent value"? 

[Iamnvt]

Because I am looking the most recent value of line A, Product Apple, where it has Plan > 0 of previous date —> which is the HC value in row#1

[AlB · Accepted solution]

Try this, although I believe it's overly complex due to the structure you are using (swap the ";" for "," if necessary)

Sum of Previous HC =
IF (
    [Sum of Actual] > 0 && ( ISBLANK ( [Sum of Plan] ) || [Sum of Plan] = 0);
    VAR AuxTable_ =
        ADDCOLUMNS (
            CROSSJOIN (
                DISTINCT ( Line[Line] );
                CALCULATETABLE (
                    DISTINCT ( 'Date'[Date] );
                    FILTER ( ALL ( 'Date'[Date] ); 'Date'[Date] < SELECTEDVALUE ( 'Date'[Date] ) )
                );
                DISTINCT ( 'Product'[Product] );
                ALL ( 'Hour'[Hour] )
            );
            "AuxPlan_"; [Sum of Plan];
            "AuxHC_"; [Sum of HC];
            "SumActual_"; [Sum of Actual]
        )
    RETURN
        SUMX ( AuxTable_; [AuxHC_] )
)

[Iamnvt]

@AlB  this looks ok, but how can I make the Grand Total correct as sum of the row?