{"version":"1.0","type":"rich","title":"shiftFFT-tremor-analysis-hz","description":"This visualization displays a tremor analysis by plotting the frequency spectrum of heart rate data sampled at 62.5 Hz. It shows a line chart of raw magnitude versus frequency in Hertz, with the DC and Nyquist components excluded and the spectrum shifted to center around zero frequency. The code implements a custom FFT class using a radix-4 algorithm to transform 512 data points, then calculates magnitude and phase arrays. It uses D3 for rendering with `scaleLinear`, `line`, and `extent`, alongside responsive axes from `@drbagwell/responsive-viz-axes`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6ec57773390d417595ac3858d09578d3?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}