Plot 2D array of (x,y,z) points in 3D space (Matplotlib)
I'm a beginner in Python and specially in Matplotlib. I have a 22797x3 array, built from a multiplication between two other arrays, one 22797x400 long and the other 400x3 long. In the resulted array (22797x3),each line represents a point with (x,y,z) coordinates, hence the 3 columns. How could I plot that resulted array in a 3D surface, where I can see all the 22797 points spread in 3D space? This data is for future Kmeans clustering, so I need to visualise it.
So far I've tried:
import numpy as np
from matplotlib import pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
#building the 22797x3 array:
#loading the first array from .txt file, 22797x400 long.
array = np.loadtxt('C:UsersScripts/final_array.txt', usecols=range(400))
array = np.float32(array)
#loading the second array from .txt file, 400x3 long.
small_vh2 = np.loadtxt('C:UsersScripts/small_vh2.txt', usecols=range(3))
small_vh2 = np.float32(small_vh2)
#multiplying and getting result array 22797x3 long:
Y = np.array(np.matmul(array,small_vh2))
#I've checked Y dimensions, it's 22797x3 long, working fine.
#now I must plot it in 3D:
fig = plt.figure()
ax = Axes3D(fig)
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2])
plt.show()
I keep getting the result shown in the image below:
https://i.stack.imgur.com/jRyHM.jpg
What I need is to get is the 22797 points, and I keep getting only 4 points plotted. Does anybody know what is wrong with the code?
numpy matplotlib mplot3d
asked Nov 14 '18 at 14:31
L'utilisatriceL'utilisatrice
88119
add a comment |
I'm a beginner in Python and specially in Matplotlib. I have a 22797x3 array, built from a multiplication between two other arrays, one 22797x400 long and the other 400x3 long. In the resulted array (22797x3),each line represents a point with (x,y,z) coordinates, hence the 3 columns. How could I plot that resulted array in a 3D surface, where I can see all the 22797 points spread in 3D space? This data is for future Kmeans clustering, so I need to visualise it.
So far I've tried:
import numpy as np
from matplotlib import pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
#building the 22797x3 array:
#loading the first array from .txt file, 22797x400 long.
array = np.loadtxt('C:UsersScripts/final_array.txt', usecols=range(400))
array = np.float32(array)
#loading the second array from .txt file, 400x3 long.
small_vh2 = np.loadtxt('C:UsersScripts/small_vh2.txt', usecols=range(3))
small_vh2 = np.float32(small_vh2)
#multiplying and getting result array 22797x3 long:
Y = np.array(np.matmul(array,small_vh2))
#I've checked Y dimensions, it's 22797x3 long, working fine.
#now I must plot it in 3D:
fig = plt.figure()
ax = Axes3D(fig)
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2])
plt.show()
I keep getting the result shown in the image below:
https://i.stack.imgur.com/jRyHM.jpg
What I need is to get is the 22797 points, and I keep getting only 4 points plotted. Does anybody know what is wrong with the code?
numpy matplotlib mplot3d
asked Nov 14 '18 at 14:31
L'utilisatriceL'utilisatrice
88119
add a comment |
I'm a beginner in Python and specially in Matplotlib. I have a 22797x3 array, built from a multiplication between two other arrays, one 22797x400 long and the other 400x3 long. In the resulted array (22797x3),each line represents a point with (x,y,z) coordinates, hence the 3 columns. How could I plot that resulted array in a 3D surface, where I can see all the 22797 points spread in 3D space? This data is for future Kmeans clustering, so I need to visualise it.
So far I've tried:
import numpy as np
from matplotlib import pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
#building the 22797x3 array:
#loading the first array from .txt file, 22797x400 long.
array = np.loadtxt('C:UsersScripts/final_array.txt', usecols=range(400))
array = np.float32(array)
#loading the second array from .txt file, 400x3 long.
small_vh2 = np.loadtxt('C:UsersScripts/small_vh2.txt', usecols=range(3))
small_vh2 = np.float32(small_vh2)
#multiplying and getting result array 22797x3 long:
Y = np.array(np.matmul(array,small_vh2))
#I've checked Y dimensions, it's 22797x3 long, working fine.
#now I must plot it in 3D:
fig = plt.figure()
ax = Axes3D(fig)
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2])
plt.show()
I keep getting the result shown in the image below:
https://i.stack.imgur.com/jRyHM.jpg
What I need is to get is the 22797 points, and I keep getting only 4 points plotted. Does anybody know what is wrong with the code?
numpy matplotlib mplot3d
asked Nov 14 '18 at 14:31
L'utilisatriceL'utilisatrice
88119
I'm a beginner in Python and specially in Matplotlib. I have a 22797x3 array, built from a multiplication between two other arrays, one 22797x400 long and the other 400x3 long. In the resulted array (22797x3),each line represents a point with (x,y,z) coordinates, hence the 3 columns. How could I plot that resulted array in a 3D surface, where I can see all the 22797 points spread in 3D space? This data is for future Kmeans clustering, so I need to visualise it.
So far I've tried:
import numpy as np
from matplotlib import pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
#building the 22797x3 array:
#loading the first array from .txt file, 22797x400 long.
array = np.loadtxt('C:UsersScripts/final_array.txt', usecols=range(400))
array = np.float32(array)
#loading the second array from .txt file, 400x3 long.
small_vh2 = np.loadtxt('C:UsersScripts/small_vh2.txt', usecols=range(3))
small_vh2 = np.float32(small_vh2)
#multiplying and getting result array 22797x3 long:
Y = np.array(np.matmul(array,small_vh2))
#I've checked Y dimensions, it's 22797x3 long, working fine.
#now I must plot it in 3D:
fig = plt.figure()
ax = Axes3D(fig)
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2])
plt.show()
I keep getting the result shown in the image below:
https://i.stack.imgur.com/jRyHM.jpg
What I need is to get is the 22797 points, and I keep getting only 4 points plotted. Does anybody know what is wrong with the code?
numpy matplotlib mplot3d
numpy matplotlib mplot3d
asked Nov 14 '18 at 14:31
L'utilisatriceL'utilisatrice
88119
asked Nov 14 '18 at 14:31
L'utilisatriceL'utilisatrice
88119
edited Nov 14 '18 at 15:01
L'utilisatrice
asked Nov 14 '18 at 14:31
L'utilisatriceL'utilisatrice
88119
asked Nov 14 '18 at 14:31
L'utilisatriceL'utilisatrice
88119
asked Nov 14 '18 at 14:31
L'utilisatriceL'utilisatrice
88119
88119
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
from matplotlib import pyplot as plt
# made 2 random arrays of the same size as yours
array = np.random.rand(22797, 400)
small_vh2 = np.random.rand(400,3)
Y = np.matmul(array,small_vh2)
#now I must plot it in 3D:
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2], alpha = 0.1)
ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')
ax.set_zlabel('Z Label')
plt.show()
answered Nov 14 '18 at 20:44
anotheroneanotherone
409417
Thank you very very much!!!
– L'utilisatrice
Nov 14 '18 at 21:39
@L'utilisatrice you are welcome.
– anotherone
Nov 15 '18 at 8:53
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53302574%2fplot-2d-array-of-x-y-z-points-in-3d-space-matplotlib%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
from matplotlib import pyplot as plt
# made 2 random arrays of the same size as yours
array = np.random.rand(22797, 400)
small_vh2 = np.random.rand(400,3)
Y = np.matmul(array,small_vh2)
#now I must plot it in 3D:
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2], alpha = 0.1)
ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')
ax.set_zlabel('Z Label')
plt.show()
answered Nov 14 '18 at 20:44
anotheroneanotherone
409417
Thank you very very much!!!
– L'utilisatrice
Nov 14 '18 at 21:39
@L'utilisatrice you are welcome.
– anotherone
Nov 15 '18 at 8:53
add a comment |
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
from matplotlib import pyplot as plt
# made 2 random arrays of the same size as yours
array = np.random.rand(22797, 400)
small_vh2 = np.random.rand(400,3)
Y = np.matmul(array,small_vh2)
#now I must plot it in 3D:
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2], alpha = 0.1)
ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')
ax.set_zlabel('Z Label')
plt.show()
answered Nov 14 '18 at 20:44
anotheroneanotherone
409417
Thank you very very much!!!
– L'utilisatrice
Nov 14 '18 at 21:39
@L'utilisatrice you are welcome.
– anotherone
Nov 15 '18 at 8:53
add a comment |
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
from matplotlib import pyplot as plt
# made 2 random arrays of the same size as yours
array = np.random.rand(22797, 400)
small_vh2 = np.random.rand(400,3)
Y = np.matmul(array,small_vh2)
#now I must plot it in 3D:
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2], alpha = 0.1)
ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')
ax.set_zlabel('Z Label')
plt.show()
answered Nov 14 '18 at 20:44
anotheroneanotherone
409417
from mpl_toolkits.mplot3d import Axes3D
import numpy as np
from matplotlib import pyplot as plt
# made 2 random arrays of the same size as yours
array = np.random.rand(22797, 400)
small_vh2 = np.random.rand(400,3)
Y = np.matmul(array,small_vh2)
#now I must plot it in 3D:
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter(Y[:, 0], Y[:, 1], Y[:, 2], alpha = 0.1)
ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')
ax.set_zlabel('Z Label')
plt.show()
answered Nov 14 '18 at 20:44
anotheroneanotherone
409417
answered Nov 14 '18 at 20:44
anotheroneanotherone
409417
answered Nov 14 '18 at 20:44
anotheroneanotherone
409417
answered Nov 14 '18 at 20:44
anotheroneanotherone
409417
409417
Thank you very very much!!!
– L'utilisatrice
Nov 14 '18 at 21:39
@L'utilisatrice you are welcome.
– anotherone
Nov 15 '18 at 8:53
add a comment |
Thank you very very much!!!
– L'utilisatrice
Nov 14 '18 at 21:39
@L'utilisatrice you are welcome.
– anotherone
Nov 15 '18 at 8:53
Thank you very very much!!!
– L'utilisatrice
Nov 14 '18 at 21:39
Thank you very very much!!!
– L'utilisatrice
Nov 14 '18 at 21:39
@L'utilisatrice you are welcome.
– anotherone
Nov 15 '18 at 8:53
@L'utilisatrice you are welcome.
– anotherone
Nov 15 '18 at 8:53
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53302574%2fplot-2d-array-of-x-y-z-points-in-3d-space-matplotlib%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
