spFRF is started from the MATLAB Command Window by typing spfrf. If there is an output argument, the handle to the application figure is returned. spFRF can also be launched with any combination of the following optional input arguments: time response functions (imat_fn) or coordinate traces (imat_ctrace or cell of imat_ctraces).
More than one instance of spFRF can be running concurrently. The number of copies running at any one time is only limited by the available IMAT licenses and the memory and other resources of the computer.
spFRF is organized into two modules, denoted by tabs at the lower left corner of the GUI. Once you are finished with the Setup module, you will progress to the Results module.