Fig. 3: Continuous wavelet spectrum.
From: The relation between football clubs and economic growth: the case of developed countries
The frequency is denoted on the vertical axis, while the time period is represented along the horizontal axis. The thin black curve pertains to the cone of influence (COI), signifying the region affected by edge effects. On the spectrum, the color bar to the right transitions from blue to yellow, indicating a shift from low to high power levels.
