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Derived variables with BMS-specified calulations calculations are highlighted green within the measurements observations tab. The input variables are visible in the trait summary. (See more on adding Formulas to traits in the Ontology).
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Click Actions and select execute calculated variable.
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The first row, HM11, contains input data for two derived traits. For example, dry grain yield (kg/plot) or GY_DW_kgPlot can be used with plot size variable, PlotArea_m2, from Environments tab to calculate dry grain yield (t/h) or GY_DW_tha using this formula, ({{GY_DW_kgPlot}}* 1000/{{PlotArea_m2}}).
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Select the appropriate dataset where the derived variable is located. Continue.
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Select the derived variable, GY_DW_tha, and instance(s) to execute calculation. All instances are selected by default. Execute.
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The calculated value(s) for the derived variable, GY_DW_tha, now populate the observation. Only a single plot had enough data entered to calculate GY_DW_tha. A warning message alerts you to that the other plots have missing data, preventing the calculation.
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