在python中用多个参数绘制f（X，Y）

Question

I have pretty specific task here. Lets say I have function of 5 variables. I want to make a 3d plot, where Ill take 2 variables as variables and 3 variables as fixed parameters. Here is an example:

import matplotlib.pyplot as plt
import matplotlib
from mpl_toolkits.mplot3d import axes3d

import numpy

#desired function is for example f(x, y, {a,b,c}) = x*a/((y+b)*(y+c))
a = 3
b = 8.5
c = 3.1
x = [i for i in range(-10,10,1)]
y = x

X, Y = numpy.meshgrid(x, y)

#this part of code is wrong
Z = X*a / ((Y+b)*(Y+c))

Lets plot it as in here .

fig = plt.figure()
ax = fig.add_subplot(111, projection = '3d')
surf = ax1.plot_surface(X, Y, Z, rstride = 5, cstride = 5, 
       cmap = matplotlib.cm.jet)
fig.colorbar(surf)
plt.show()

Thank you for any hints or helps!

Answer 1

You have an error on ax1 which is undefined. This edited code should work:

import matplotlib.pyplot as plt
import matplotlib
from mpl_toolkits.mplot3d import axes3d
import numpy

#desired function is for example f(x, y, {a,b,c}) = x*a/((y+b)*(y+c))
a = 3
b = 8.5
c = 3.1
x = [i for i in range(-10,10,1)]
y = x

X, Y = numpy.meshgrid(x, y)
Z = X*a / ((Y+b)*(Y+c))

fig = plt.figure()
ax = fig.add_subplot(111, projection = '3d')
surf = ax.plot_surface(X, Y, Z, rstride = 5, cstride = 5, \
       cmap = matplotlib.cm.jet)

fig.colorbar(surf)
plt.show()