1 Reply Latest reply on Nov 22, 2017 1:44 PM by ryoboyle

    OpenLabs Intelligent Reporting Bracketing Total Area

    stuart.kain

      Hi,

       

      I have been trying to calculate the RSD of two bracketing reference standards based on the TOTAL Area of the summed peaks. I have tried a few things however none have worked.

       

      I have filtered the table to provide the 2 reference standards in question using Calibration_Level. I have tried adding a custom field and using SUM(Peak_Area), however when trying to calculate anything it gives the error about using 2 nested aggregate functions. I then tried assigning the initial Sum(Peak_Area) as an expression variable with the injection ID as key, however when I try and run the RSD on that table it is greyed out, or populates the table with "NaN".

       

      I am using OpenLab CDS Version C.01.05

      Has anyone had a similar problem or could point me in the right direction?

       

      Thanks,

       

      Stuart