multiply

David_Mellamphy
David_Mellamphy Registered Posts: 9 ✭
in General Discussion

Hi - I have a very simple request but I am unable to work it out.

I have 2 columns on a dataset which I need to multiply one by the other?

Example one column is in USD and then I have a rates column and I want to multiply one by the other to give a number?

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  • max
    max Dataiker Posts: 8 Dataiker
    edited July 17

    Hello @David_Mellamphy
    ,

    In a prepare recipe, you can add a new "Formula" preprocessor. If one column is named "cost" and the other is "rate", your formula would look something like 

    cost * rate

    and the result will be in whatever "Output column" is set to.

    I hope this helps,

    Max

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  • me2
    me2 Registered Posts: 50 ✭✭✭✭✭

    You can do it several ways including using SQL, Python, R, Visual Recipe, etc.

    Using a Prepare Visual Recipe:

    1. Add new step, "Formula" from the Processor Library
    2. Set the formula to numval("dollars")*numval("rate"). Numval() tells dataiku to use the number value of that row from column "x".

    You might have to do some pre-processing if some rows have null values or storage type is not an integer/double .

    Have fun!

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