Document angle convention in style mapping is from the horizontal

[ahuang11]

With all the conventions out there, I think style mapping should explicitly state it's from the horizontal, turning counterclockwise, or show the plot below.

I had to do this experiment to figure it out:

import holoviews as hv
import numpy as np

data = {
    "angle": np.arange(0, 360, 45),
    "x values": np.arange(0, 360, 45),
    "y values": np.zeros(8),
    "l values": np.zeros(8) + 1,
}

hv.Points(data, kdims=['x values','y values'] , vdims=['angle']).opts(
    angle=hv.dim('angle'), marker='dash'
) * hv.Labels(data, ['x values', 'l values'], 'angle').opts(ylim=(-0.5, 2), text_font_size='8px')

https://holoviews.org/user_guide/Style_Mapping.html

[ahuang11]

Converting it to aviation navigation from ChatGPT:

[hoxbro]

Your own experience likely gets to you here, as this is just using Cartesian coordinates.

Clarifying this is in the docs would be a good addition.