A python module for scientific analysis and visualization of эd objects
To visualize a file from a web URL (or from your Dropbox!), simply type in your terminal:
pip install vedo vedo https://vedo.embl.es/examples/data/panther.stl.gz
To visualize a full 3D interactive scene, type:
Let's create an interactive 3D scene with a simple cone, in 3 lines of python code:
from vedo import Cone # Create a simple cone c = Cone() # Show it (with axes) c.show(axes=1) # Now you can interact with the 3D scene, # Press "h" and explore the possibilities!
Let's write a simple python script that loads a polygonal Mesh and generates a cool rendering by adding some custom light sources to the scene:
from vedo import * # Load a polygonal mesh, make it white and glossy: man = Mesh('https://vedo.embl.es/example/data/man.vtk') man.c('white').lighting('glossy') # Create two points: p1 = Point([ 1,0,1], c='yellow') p2 = Point([-1,0,2], c='red') # Add colored light sources at the point positions: l1 = Light(p1, c='yellow') l2 = Light(p2, c='red') # Show everything in one go: show(man, l1, l2, p1, p2, "Hello World", axes=True)
Let's create a Volume - a volumetric dataset - from a numpy object:
import numpy as np from vedo import * # Create a scalar field: the distance from point (15,15,15) X, Y, Z = np.mgrid[:30, :30, :30] scalar_field = ((X-15)**2 + (Y-15)**2 + (Z-15)**2)/225 # Create the Volume from the numpy object vol = Volume(scalar_field) # Generate the surface that contains all voxels in range [1,2] lego = vol.legosurface(1,2).addScalarBar() show(lego, axes=True)
Draw 3D scatter plot plot of oriented wind speed directions:
import numpy as np import pandas as pd from vedo import Cone, Glyph, show # Read cvs data df = pd.read_csv("https://raw.githubusercontent.com/plotly/datasets/master/vortex.csv") pts = np.c_[df['x'], df['y'], df['z']] vecs= np.c_[df['u'], df['v'], df['w']] # Create a mesh to be used like a symbol (a "glyph") to be attached to each point cone = Cone().scale(0.3).rotateY(90) # make it smaller and orient tip to positive x glyph = Glyph(pts, cone, vecs, scaleByVectorSize=True, colorByVectorSize=True) glyph.cmap('Blues').addScalarBar(title='wind speed').show(axes=True)
vedo: plotting in FEniCS with python", Poster at FEniCS'2019, SDTM, Washington DC, June 2019.
vedo, a python module for scientific analysis and visualization of 3D objects and point clouds", Zenodo, 2021, doi.org/10.5281/zenodo.4287635.