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Power Platform Community / Forums / Power Apps / How to calculate Media...
Power Apps
Answered

How to calculate Median for a column in Gallery?

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Posted on by acepeda 133

Hi, 

I have a Gallery in which i'm applying these formulas and the output is correct:

 

Sum(Gallery8.AllItems,lbl_PriceUSD)

Average(Gallery8.AllItems,lbl_PriceUSD)

 

But when Median is applied, the formula is not recognized, the error is: Invocation of Unknown or unsupported function.

 

Median(Gallery8.AllItems,lbl_PriceUSD)

 

Could anyone give me some tip on how to solve it?

 

Thanks in advance.

 

image.png

Categories:
Building Power Apps
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  • Verified answer
    MF-12051538-0 Profile Picture
    MF-12051538-0 406 on at

    Hi @acepeda ,

    There's a chance that a less complicated way exists -- but this is how I would solve this problem. Copy and paste the following code. I left notes in there that should hopefully make things a little easier to understand in there.

    Note that there are three places where I have "Price USD" in quotes that will need to be replaced with the name of the column in your table that is being referenced in the gallery label lbl_PriceUSD.

    Good luck.

    With(
    {rowcount: CountRows(Gallery8.AllItems)}, //define rowcount as the number of rows in Gallery8
    If(
    Mod(
    rowcount,
    2
    ) = 0, //does Gallery8 have even number of rows?
    Average( //if even # of rows, get average of two middle numbers
    Value(
    Last(
    FirstN(
    SortByColumns(
    Gallery8.AllItems,
    "Price USD", //this should be the name of the column in your table that is being referenced by lbl_PriceUSD
    Ascending
    ),
    rowcount / 2 //to get first middle number
    )
    ).lbl_PriceUSD.Text
    ),
    Value(
    Last(
    FirstN(
    SortByColumns(
    Gallery8.AllItems,
    "Price USD", //this should be the name of the column in your table that is being referenced by lbl_PriceUSD
    Ascending
    ),
    (rowcount / 2) + 1 //to get second middle number
    )
    ).lbl_PriceUSD.Text
    )
    ),
    Value( //if odd # of rows, get value of middle number
    Last(
    FirstN(
    SortByColumns(
    Gallery8.AllItems,
    "Price USD", //this should be the name of the column in your table that is being referenced by lbl_PriceUSD
    Ascending
    ),
    RoundUp(
    rowcount / 2, //to get middle number
    0
    )
    )
    ).lbl_PriceUSD.Text
    )
    )
    )


    If this solved your problem, please click Accept as solution.

  • acepeda Profile Picture
    acepeda 133 on at

    Excellent... thanks so much!.   I really appreciate your help.

    I never thought the formula was so complex.

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