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FastRet comes with a GUI for easy and intuitive use. However, sometimes it’s preferable to use FastRet programmatically. This vignette will show you how to use FastRet from the R command line.

The four modes that are available via the FastRet GUI are Train new Model, Predict Retention Times, Selective Measuring and Adjust existing Model. Each of these modes has a corresponding function, which can be called from the command line. The mode-function mapping is as follows:

Mode Function
Train new Model train_frm
Predict Retention Times predict.frm
Selective Measuring selective_measuring
Adjust existing Model adjust_frm

For details about each function, like parameter descriptions, usage examples and return values, click on the function name to open the corresponding help page.