Im trying to represent an 2 dimensional array of a pyramid in the 3d space. In matlab i could just use the function mesh(). But in python im having a hard time doing it. Answer np.meshgrid() creates the grid coordinates. ax.plot_surface() plots a 3d height field.
Tag: 3d
Ursina FirstPersonController Change Collider Not Working
My Issue I am using the Panda3D wrapper for Python to run some 1st person game tests. I would like the collider of the ursina camera type called the FirstPersonController to extend its collider over the sprite. I have tried (without really knowing how as there aren’t many tutorials on Ursina) using a Bo…
Why can’t I load a .OBJ file into Python Ursina?
I am using the python Ursina engine. I want to import a .OBJ file, but it never works, yet no errors are raised. I have tried: I have also tried it without the .obj ending. Any help? I have now tried: I get the error: Answer The issue is triangulation. The models faces must only be triangles. You can do
plotting a 3d graph of a regressor made with sklearn
I have been using this tutorial to learn decision tree learning, and am now trying to understand how it works with higher dimensional datasets. Currently my regressor predicts a Z value for an (x,y) pair that you pass to it. I want to use a 3d graph to visualise it, but I have struggled with the way regressor…
How to plot 3D points in Matplotlib
I have a question I have a dataset which contain 1200060 rows and 3 column. column contain points and I have to draw a 3D plot for it. I’m using the code below but I don’t know where is the error. error is: I tried this one too but unsuccessful this one run but didn’t show any output and usi…
How to make GUI (python, c#, c++) for a 3D calculator model? [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago. Improve this question I was told, the best option is to use GUI environments like GTK or Qt, but…
How to plot output from marching_cubes_lewiner in python?
I’ve been able to use the lewiner marching cubes algorithm in python. It outputs vertices, faces, and other attributes. I want to be sure that it is working correctly, so I’d like to plot a 3D image of what the function returns. However, I have not had any success so far. I have tried the followin…
Contourf on the faces of a Matplotlib cube
I am trying to ‘paint’ the faces of a cube with a contourf function using Python Matplotlib. Is this possible? This is similar idea to what was done here but obviously I cannot use patches. Similarly, I don’t think I can use add_collection3d like this as it only supports PolyCollection, Line…
How to make a 3D scatter plot in matplotlib
I am currently have a nx3 matrix array. I want plot the three columns as three axis’s. How can I do that? I have googled and people suggested using Matlab, but I am really having a hard time with understanding it. I also need it be a scatter plot. Can someone teach me? Answer You can use matplotlib for …
What’s the best way to calculate a 3D (or n-D) centroid?
As part of a project at work I have to calculate the centroid of a set of points in 3D space. Right now I’m doing it in a way that seems simple but naive — by taking the average of each set of points, as in: where x, y and z are arrays of floating-point numbers. I seem to recall