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"""Build polar histograms and place them on a 3D surface."""
from vedo import Hyperboloid, show
from vedo.pyplot import histogram
import numpy as np
np.random.seed(1)
##################################################################
radhisto = histogram(
np.random.rand(200)*6.28,
mode='polar',
title="random orientations",
bins=10,
c=range(10), #'orange', #uniform color
alpha=0.8,
labels=["label"+str(i) for i in range(10)],
)
show(radhisto, at=0, N=2, axes=0, sharecam=False)
##################################################################
hyp = Hyperboloid(res=20).cut_with_plane().rotate_y(-90)
hyp.color('grey').alpha(0.3)
# select 10 random indices of points on the surface
idx = np.random.randint(0, hyp.npoints, size=10)
radhistos = []
for i in idx:
#generate a random histogram
rh = histogram(
np.random.randn(100),
mode='polar',
bins=12,
r1=0.2, # inner radius
phigap=1.0, # leave a space btw phi bars
cmap='viridis_r',
show_disc=False,
show_angles=False,
show_errors=False,
)
rh.scale(0.15) # scale histogram to make it small
rh.pos(hyp.points[i]) # set its position on the surface
radhistos.append(rh)
show(hyp, radhistos, at=1).interactive().close()
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