A spectrogram of simple oscillators over varying periods.
Oscillator periods increase from bottom to top.
Color indicates the value of the oscillator, with fuchsia indicating a negative value, black indicating a value around 0, and lime green indicating a value greater than 0.
The oscillators are simply the percentage of positive movement within a lookback period, with 50 percent centered at 0.
Vertical lines along the spectrogram indicate that multiple oscillators of different periods are changing values, indicating a shift in market character.