A method, performed by a computer device, may include selecting one or more input and output points in an executable graphical model in a modeling application and simulating the executable graphical model over a plurality of time points. The method may further include generating a time domain response plot for the executable graphical model based on the simulating; obtaining matrices of partial derivatives based on the selected one or more input and output points at particular time points of the plurality of time points; generating a frequency domain response plot for the executable graphical model based on the obtained matrices of partial derivatives; and generating a bidomain simulator user interface, the bidomain simulator user interface including the generated time domain response plot and the generated frequency domain response plot.