我有一个代码，我根据变量的值绘制了一些箭头，但有时这些值很大，例如 9000，有时值较小，例如 400。那么我怎样才能以对数形式对图表进行刻度坐标轴比例根据箭头的值而变化。
from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt
import numpy as np
from itertools import product, combinations, cycle
from numpy import sin, cos
from matplotlib.patches import Rectangle, Circle, PathPatch
import mpl_toolkits.mplot3d.art3d as art3d
import wave
import sys
import matplotlib as mpl
fig = plt.figure()
ax = fig.gca(projection='3d')
ax.set_aspect("auto")
ax.set_autoscale_on(True)
font = {'family' : 'broadway',
'color' : 'blue',
'weight' : 'normal',
'size' : 16,
'horizontalalignment': 'right',
}
#dibujar cubo
r = [-10000, 10000]
for s, e in combinations(np.array(list(product(r,r,r))), 2):
if np.sum(np.abs(s-e)) == r[1]-r[0]:
ax.plot3D(*zip(s,e), color="b")
#dibujar punto
ax.scatter([0],[0],[0],color="g",s=100)
#dibujar vector
from matplotlib.patches import FancyArrowPatch
from mpl_toolkits.mplot3d import proj3d
class Arrow3D(FancyArrowPatch):
def __init__(self, xs, ys, zs, *args, **kwargs):
FancyArrowPatch.__init__(self, (0,0), (0,0), *args, **kwargs)
self._verts3d = xs, ys, zs
def draw(self, renderer):
xs3d, ys3d, zs3d = self._verts3d
xs, ys, zs = proj3d.proj_transform(xs3d, ys3d, zs3d, renderer.M)
self.set_positions((xs[0],ys[0]),(xs[1],ys[1]))
FancyArrowPatch.draw(self, renderer)
#print "ingrese coordenada inicial: "
a1 = 120
b1 = -410
c1 = 200
d1 = -652
e1 = 800
f1 = -500
a1=0.3
b1=-1
c1=0.5
d1=-0.6
e1=0.2
f1=-0.4
a = Arrow3D([0,0],[0,a1],[0,0], mutation_scale=20, lw=1, arrowstyle="-|>", color="k")
b = Arrow3D([0,b1],[0,0],[0,0], mutation_scale=20, lw=1, arrowstyle="-|>", color="r")
c = Arrow3D([0,0],[0,0],[0,c1], mutation_scale=20, lw=1, arrowstyle="-|>", color="b")
d = Arrow3D([0,0],[0,0],[0,d1], mutation_scale=20, lw=1, arrowstyle="-|>", color="g")
e = Arrow3D([0,e1],[0,0],[0,0], mutation_scale=20, lw=1, arrowstyle="-|>", color="c")
f = Arrow3D([0,0],[0,f1],[0,0], mutation_scale=20, lw=1, arrowstyle="-|>", color="m")
ax.add_artist(a)
ax.add_artist(b)
ax.add_artist(c)
ax.add_artist(d)
ax.add_artist(e)
ax.add_artist(f)
ax.set_xlabel("Amplitud en X", size = 18, color = 'r', family = 'verdana')
ax.set_ylabel("Amplitud en Y", size = 18, color = 'r', family = 'verdana')
ax.set_zlabel("Amplitud en Z", size = 18, color = 'r', family = 'verdana')
ax.text2D(0.05, 0.95, "Intensimetro de Audio", fontsize=16, transform=ax.transAxes)
#plt.title('Intensimetro de Audio',fontdict=font)
lista = [a1,f1]
list.sort(lista, key=abs, reverse=True)
print lista
lista1 = [b1,e1]
list.sort(lista1, key=abs, reverse=True)
print lista1
lista2 = [c1,d1]
list.sort(lista2, key=abs, reverse=True)
print lista2
if abs(b1)>abs(e1):
h=b1
else:
h=e1
if abs(a1)>abs(f1):
j=a1
else:
j=f1
if abs(c1)>abs(d1):
k=c1
else:
k=d1
a = [0, 0, 0]
b = [h, j, k]
xs,ys,zs = zip(a,b)
print (xs,ys,zs)
res = Arrow3D(xs, ys, zs, mutation_scale=20, lw=1, arrowstyle="simple", color='y')
ax.add_artist(res)
plt.show()
我放了所有代码只是为了让您确定我必须在哪里更改比例以使其记录。
谢谢！