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Calculate Transform

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The formula transform extends data objects with new fields (columns) according to an expression.

  "transform": [
    {"calculate": ..., "as" ...} // Calculate Transform
Property Type Description
calculate String

Required. A expression string. Use the variable datum to refer to the current data object.

as String

Required. The field for storing the computed formula value.


This example uses calculate to derive a new field, and then filters the data based on the new field.