Treatment of missing data in a mask

DataGraph Forums Technical Support Support Desk Treatment of missing data in a mask

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  • #4648
    AKro1
    Participant

      Hello,

      I have data tables containing empty cells. In a plot these are ignored – that’s fine.

      In a mask I want these cells to be treated as zero-values.

      I tried to use the expression function and checked the box “Missing”=”Set to 0”,

      but it has no effect: Missing data are still missing.

      Is there any other solution for this problem?

      here is an example

      Thanks Andreas

       

      #4651
      dgteam
      Moderator

        The Missing set to 0 will only be triggered when the number is being used in a calculations.  That was the original purpose of the setting was to deal with a scenario where you have an empty row.

        Missing_empty

        Changing that setting, and now you have the value calculated even with the empty row.

        Missing_empty2

         

        In your case, you could create a column of zeros and use that in the expression.  Or use a column that has the length that you want and include that in the expression, where you multiply it by zero.  That will return a value for PbO in every row as zero, even when it is empty.

        Missing1

         

        FYI – There is also a quick way to fill all the empty values with 0.

        Highlight all the columns in your group, including the ones that don’t have empty values.

        Select Data > Change Empty rows to zero.

        It will change the empty values to zero in all the rows where there is data, from the selected columns, up to the length of the longest column selected.

        Does that help?

         

         

         

        #4652
        AKro1
        Participant

          That works. Many thanks!

          (I have tried to add  or multiply with a constant -and failed)

          Andreas

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        DataGraph Forums Technical Support Support Desk Treatment of missing data in a mask