input structure for custom functions

[peendebak]

What is the reason for the npts argument of custom functions? E.g.

    def sine(freq, ampl, off, SR, npts):
        time = np.linspace(0, npts/SR, npts)
        freq *= 2*np.pi
        return (ampl*np.sin(freq*time)+off)

A format more user friendly seems to be:

    def sine(freq, ampl, off, times):
        freq *= 2*np.pi
        return (ampl*np.sin(freq*times)+off)

@WilliamHPNielsen @lucblom

[WilliamHPNielsen]

The short answer: It eases things on the backend when forging (converting to arrays) that the sample rate and number of points are explicitly put in. I don't want to derive a sample rate from the times nor do I want to make sure that the times are well-behaved.

[WilliamHPNielsen]

Aaaaand... I'm not so sure anymore. I actually think it's a good idea.