import numpy as np

import qplot as qp

xy = np.array([

[0.72584, -0.559],

[0.11131, -.38611],

[-.27279, .31731],

[-0.36819, -0.36485],

[.53813, 0.46068]])

qp.figure('eg_circ', 3, 2.5)

# Draw the circular "axes"

phi = qp.arange(0, 2*np.pi, 0.01)

qp.pen('777', 0.5, pattern='dash')

qp.plot(0.5*np.cos(phi), 0.5*np.sin(phi))

qp.pen(pattern='solid')

qp.plot(np.cos(phi), np.sin(phi))

qp.plot(1.05*np.array([-1, 1]), [0, 0])

qp.plot([0, 0], 1.05*np.array([-1, 1]))

# Draw the data

qp.pen()

qp.marker('o', 4, 'solid')

qp.mark(xy[:,0], xy[:,1])

# Label the data

for k, (x,y) in enumerate(xy):

qp.at(x, y)

qp.align('left', 'top')

qp.text(chr(ord('a') + k), dx=5, dy=5)

# Label the axes

qp.at(1, 0)

qp.align('left', 'middle')

qp.text('0°', dx=10)

qp.at(-1, 0)

qp.align('right', 'middle')

qp.text('180°', dx=-10)

qp.at(0, 1)

qp.align('center', 'bottom')

qp.text('90°', dy=-10)

qp.at(0, -1)

qp.align('center', 'top')

qp.text('270°', dy=10)

# Ensure annotations fit inside bounding box while preserving aspect ratio

qp.shrink(ratio=1)