matplotlib 3d 线框图
是的,所以我有一个 x 值、y 值和 z 值的列表(我想我将其转换为数组?),我想制作一个曲面图,但它不起作用。
这就是我想要做的,你可以忽略大部分代码,因为它们非常无关紧要 - 只需看看最后的 xdis
、ydis
和 dist
以及我试图绘制 atm 的位置,我收到 ValueError: need more than 1 value to unpack :(。非常感谢您的帮助。
from math import *
from numpy import *
import pylab
def sweep (v,p,q,r,s):
a=.98
for i in range (1, len(v)-1):
for j in range (1, len(v)-1):
c =0.0
if i==p and j==q: c =1.0
if i==r and j==s: c= -1.0
v[i,j]=(v[i -1,j]+v[i+1,j]+v[i,j -1]+v[i,j+1]+c-a*v[i,j])/(4-a)
def main():
from mpl_toolkits.mplot3d import Axes3D
from matplotlib import cm
from matplotlib.ticker import LinearLocator, FormatStrFormatter
import matplotlib.pyplot as plt
ydis=[]
xdis=[]
resis=[]
for j in range(2,18):
for i in range(2,18):
v= zeros ((20,20),float )
p=q=9
r=i
s=j
dv =1.0e10
lastdv =0
count =0
while (fabs(dv - lastdv)>1.0e-7*fabs(dv)):
lastdv =dv
sweep(v,p,q,r,s)
dv=v[p,q]-v[r,s]
resis.append(dv)
xdis.append(r-p)
ydis.append(s-q)
X=array(xdis)
Y=array(ydis)
Z=array(resis)
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.plot_wireframe(X,Y,Z)
plt.show()
main()
Right, so I've got a list of x values, y values and z values (which I think I converted into arrays?) which I want to make a surface plot, but it's not working.
Here's what I'm trying to do, you can ignore most of the code as it is pretty irrelevant - just look at the end where I have xdis
, ydis
and dist
and where I'm trying to plot atm I'm getting ValueError: need more than 1 value to unpack :(. Help much appreciated.
from math import *
from numpy import *
import pylab
def sweep (v,p,q,r,s):
a=.98
for i in range (1, len(v)-1):
for j in range (1, len(v)-1):
c =0.0
if i==p and j==q: c =1.0
if i==r and j==s: c= -1.0
v[i,j]=(v[i -1,j]+v[i+1,j]+v[i,j -1]+v[i,j+1]+c-a*v[i,j])/(4-a)
def main():
from mpl_toolkits.mplot3d import Axes3D
from matplotlib import cm
from matplotlib.ticker import LinearLocator, FormatStrFormatter
import matplotlib.pyplot as plt
ydis=[]
xdis=[]
resis=[]
for j in range(2,18):
for i in range(2,18):
v= zeros ((20,20),float )
p=q=9
r=i
s=j
dv =1.0e10
lastdv =0
count =0
while (fabs(dv - lastdv)>1.0e-7*fabs(dv)):
lastdv =dv
sweep(v,p,q,r,s)
dv=v[p,q]-v[r,s]
resis.append(dv)
xdis.append(r-p)
ydis.append(s-q)
X=array(xdis)
Y=array(ydis)
Z=array(resis)
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.plot_wireframe(X,Y,Z)
plt.show()
main()
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plot_wireframe 需要三个二维数组(X, Y,Z) 作为输入。所以,
在:之后
添加:
plot_wireframe expects three 2D-arrays (X,Y,Z) as input. So,
after:
add:
“sweep”函数似乎没有修改“v”,所以你得到一个空列表。
It doesn't seem like the "sweep" function is modifying 'v' so you're getting an empty list.