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Expression Extensions

Document ID: DQ297
Relevant to following products: WorkOut 2.5
Document description: Extensions to simplify writing expressions referring to replicates across plates

To increase the flexibility of the expression language used in the software we have added additional functionality available as an optional download for WorkOut 2.5.

These extensions include the ability to reference all replicates of a particular type on each plate and to reference the replicates on all plates read. For example, you can calculate the mean of all Unknowns on each plate using the expression “Unknown” and the mean of all Unknowns on all plates using “mean ({Unknown}) “

These features are current only available as an additional download for WorkOut 2.5:


  1. Unzip and download the file from here.
  2. Ensure WorkOut 2.5 is not running
  3. Copy the MParse.DLL to your program installation directory (e.g. c:\Program Files\Dazdaq\WorkOut 2.5) overwriting the existing file (you may prefer to rename the old MParse.DLL in case you want to go back to it)
New Features

Refer to all samples of a type:

If you omit the group number of a group reference this now refers to all samples of that group (on the current plate) e.g.


Refers to all Unknown wells on the current plate.

Group numbering local reference

For well associated expressions n refers to the “globally scoped” group number of the current well being evaluated. However, when you write expressions they are written using “locally scoped” reference, now m obtains the locally scoped.  e.g.

Unknown (m)


Replicates on all plates

You can now refer to all the replicates of a particular group using curly brackets, e.g.

Mean ({Control1})

Refers to the mean of the Control groups on all plates.

You can combine this with the group number omission, e.g.

mean ({Control})

To find the mean of all controls on all plates. (This can only be used if there are Control groups defined on every plate)

Expression in group numbering

You can use expressions to define the group number part of a group reference  e.g.

Control (platenum ())

refers to the Control group whose number equals the plate. (Do not forget that group references are made local to each plate)

Related articles:
DQ268: How To: Setup an assay with replicates on different plates
How To: Setup an assay with replicates on different plates

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