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Lew_14's avatar
Lew_14
Frequent Visitor
4 years ago

Populate missing data using last populated row

I'm looking for some help!   I have a table that shows minute-by-minute data logs for machines in a production environment. Each row should have a 'RefNo' value however i'm finding that the last se...
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Lew_14's avatar
Lew_14
Frequent Visitor
4 years ago

Hi v-easonf-msft,

 

Thankyou for your reply, this works perfectly...almost!

 

I mentioned that there were blank RefNo's at the start of the run and this wasn't an issue however it seems i was wrong now i've impemented your suggestion. Once the count resets to 0 i'd like the RefNo to be remain blank (as it is currently bringing across the previous RefNo and this is altering some of my visuals incorrectly), however it would be perfect if the code could look forward and grab the next available RefNo once the 'Value' count resets to 0 and the RefNo is blank, if that's possible?

 

Many thanks,

Lewis

v-easonf-msft's avatar
v-easonf-msft
Community Support
4 years ago

Hi, Lew_14 

Not fully sure what your want. Is this the result you want?

If so, please modify the formula of 'Index (amended)' as below:

Index (amended) = 
VAR a =
    CALCULATE (
        MAX ( 'Table 2'[Index] ),
        FILTER (
            'Table 2',
            'Table 2'[Index] <= EARLIER ( 'Table 2'[Index] )
                && 'Table 2'[RefNo] <> BLANK ()
        )
    ) 
VAR b =
    CALCULATE (
        MIN ( 'Table 2'[Index] ),
        FILTER (
            'Table 2',
            'Table 2'[Index] >= EARLIER ( 'Table 2'[Index] )
                && 'Table 2'[RefNo] <> BLANK ()
        )
    ) 
RETURN
    IF (
        ISBLANK ( 'Table 2'[RefNo] ),
        IF ( 'Table 2'[Valuew] = 0, b, a ),
        'Table 2'[Index]
    )

Please check 'Table 2' in my attachment.

 

Best Regards,
Community Support Team _ Eason
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

 

  • Lew_14's avatar
    Lew_14
    Frequent Visitor
    4 years ago

    Apologies, it's a little tricky to explain! Once the value resets to 0 a new count will begin for the next production run however the count can sometimes climb (to 10, for example) before the RefNo is allocated. In these cases i need the calculation to look forward and grab the next RefNo but i think your suggestion only does this where the value is 0, if i'm correct?

     

    I'm struggling to verify this as i'm receiving an error that there isn't enough available memory to add the amended index column. My table only has 20k rows and around 10 columns and i have 8GB RAM available so if there's anything you can think of to make the code more efficient that would be extremely helpful.

     

    Many thanks 

    • v-easonf-msft's avatar
      v-easonf-msft
      Community Support
      4 years ago

      Hi, Lew_14 

      Sorry, the question is a bit beyond my ability. I have no idea how to optimize this code of mine 😞.

      I think there may be other more convenient ideas, but I haven't thought of it at the moment.

       

      Best Regards,
      Community Support Team _ Eason