Eval has an advanced capability that lets you get at the individual Data Cells in any Data Unit created while processing an api.Data.Calculate script. It allows Eval() to be wrapped around a subset of the formula’s math in order to evaluate the Data Buffer that was just created by running that math.
Prior to the 5.0 version and the introduction of the RemoveNoData function, Eval was commonly used to evaluate individual data cells in a source data buffer to process based on cell amount or cell status. Evaluating the number of No Data Cells for a Data Unit is an important factor for performance and calculation efficiencies.
Eval was initially an important function to evaluate individual data cells but it has been replaced with newer techniques such as GetDataBuffer and GetDataBufferUsingFormula, and looping through cells within the data buffer, as well as the Remove functions.
Eval Function Usage
Example using Eval in a working formula:
