This is my program:

from mpl_toolkits.mplot3d import Axes3D
import matplotlib.pyplot as plt

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

x =[1,2,3,4,5,6,7,8,9,10]
y =[5,6,2,3,13,4,1,2,4,8]
z =[2,3,3,3,5,7,9,11,9,10]

ax.scatter(x, y, z, c='r', marker='o')

ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')
ax.set_zlabel('Z Label')

plt.show()

I don't know why my graph is fixed in one position.It is difficult to check every point when my data become larger.
So,I want to make my graph rotating automatically since it is easy to view every point.
Does anyone can help me?

Thank you guys! I solved my problem by importing numpy! Thanks again!

I got a file of 100 line, each line contains 5 elements such as

Aberdeen,City,189120,57.14369,-2.09814

Corresponse to places,type,population,latitude,longitude respectively

I splited them in 5 arrays and want to use function sorted(population) to rewrite this file ordered by increasing population size.

However, I can't match them in a right order when I sorted(population),eg.Aberdeen,City,59122,57.14369,-2.09814
I just made population in a increasing order.

Thank you guys! I do have a blank line in my file but now it's gone!

Stake:

print('x =',splitUP[0],'and y =',splitUP[1]);
IndexError: list index out of range

This is my data

2 1.69
3 3.25
4 2.44
5 3.45
6 6.29
7 3.94
8 5.23
9 5.78
10 6.31
11 8.25
12 7.84

Stake:

---------------------------below is my program----------------------------

import matplotlib.pyplot as plt;

x = [ ];
y = [ ];

readFile = open('xy.txt','r');

for line in readFile:

print(line);

splitUP = line.split();

print('x =',splitUP[0],'and y =',splitUP[1]);

x.append(splitUP[0]);
y.append(splitUP[1]);

readFile.close();

plt.plot(x,y);

plt.show();

import matplotlib.pyplot as plt;

x = [ ];
y = [ ];

readFile = open('xy.txt','r');

for line in readFile:
# file is open with a line in variable 'line'
# do something with this line
print(line);
# split the line based on whitespace
splitUP = line.split();

print('x = ',splitUP[0],'and y = ',splitUP[1]);
# add x and y to the arrays
x.append(splitUP[0]);
y.append(splitUP[1]);

When I run it , it shows IndexError: list index out of the range