Plotter and SoundFileView can be exploited in several ways, but they are not really efficient for scoping real-time audio signals. SuperCollider features dedicated built-in visualizers that we use to easily scope signals in both time and frequency domains.
As far as signals are concerned, we can easily plot their waveforms in real time by means of simply invoking scope on UGen graphs and instances of Bus or Server. The scopemethod is a convenient one too, which creates an instance of Stethoscope in the background; the latter being a fully featured virtual oscilloscope. An example of this is shown in the following code:
( // Stethoscope Example Server.default.waitForBoot({ // wait for server to boot {SinOsc.ar}.scope; ...No credit card required