我想用 Python 和 matplotlib 将一些代表可见卫星的值绘制成极坐标图。我在 matplotlib 示例之后编写了一些代码,并表示了极坐标图,但未绘制给定点:
import matplotlib
from matplotlib.pyplot import figure, show, rc, grid
from math import pi
# radar green, solid grid lines
rc('grid', color='#316931', linewidth=1, linestyle='-')
rc('xtick', labelsize=15)
rc('ytick', labelsize=15)
# force square figure and square axes looks better for polar, IMO
width, height = matplotlib.rcParams['figure.figsize']
size = min(width, height)
# make a square figure
fig = figure(figsize=(size, size))
ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], polar=True, axisbg='#d5de9c')
# Satellite info [PRN, E, Az, Ss, Used (1 yes, 0 no)]
sat = [ [1, 62, 255, 46, 1],
[14, 62, 26, 46, 1],
[31, 42, 158, 36, 1],
[22, 40, 76, 50, 1],
[11, 29, 308, 0, 0],
[19, 26, 243, 36, 1],
[3, 13, 217, 0, 0],
[18, 10, 93, 0, 0],
[20, 6, 291, 0, 0],
[5, 1, 72, 0, 0],
[122, 43, 216, 0, 0],
[135, 47, 203, 43, 0] ]
for index in (0, len(sat)-1):
if(sat[index][4]>0):
ax.plot(sat[index][2], sat[index][1], color='green', marker='s', markersize=12)
else:
ax.plot(sat[index][2], sat[index][1], color='gray', marker='s', markersize=12)
ax.set_rmax(2.0)
grid(True)
ax.set_title("Visible satellites", fontsize=20)
show()
我究竟做错了什么?