Quadrant Analysis plot

[Daniel Besse]

Scatter plot with:

• x: Circumferential Pedal Velocity (CPV, m/s) = Cadence/60 * Cranklength * 2pi
• y: Average Effective Pedal Force (AEPF, N) = Power / (Cadence/60 * Cranklength * 2pi)

Additional display:

• two lines defining quadrants as CPV_avg = Cadence_avg/60 * Cranklength * 2pi AEPF_avg = Power_avg / CPV_avg using Cadence_avg = avg on ride, or fixed value such as 90rpm and Power_avg = avg on ride, or fixed value such as FTP
• Possibility to highlight data for one lap

[Daniel Besse]

Custom expressions and charts

• New functions: rand, range, array_combine, ... (see #61)
• plot_scatter and plot_line (close #51)
• example using plot_scatter for Quadrant Analysis (see #55)

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