Monitor variables without model influence in SIMCA-online (Q914)
To monitor a variable in SIMCA-online it needs to be either (A) part of the model or (B) part of a generated variable that is part of the model.
In case (B) you can exclude the variable and still monitor it in SIMCA-online. Case (A) is described in Workaround below.
To make an original variable lack influence on the model and predictions, both in SIMCA and in SIMCA-online, and still keep it in the model:
- Open the Workset and click the Scale tab.
- Mark the variable.
- In the Modifier field, enter 0 and click Set.
- Close the Workset dialog and make sure that you click No to not remove the modified variable that now lacks variance.
Note that down weighting a variable using a very small weight in order to make it lack influence may result in unexpected behavior in the DModX plot in SIMCA-online. We therefore advise against this method.