""" Label Points ~~~~~~~~~~~~ Use string arrays in a point set to label points """ # sphinx_gallery_thumbnail_number = 3 import numpy as np import pyvista as pv from pyvista import examples # %% # The :func:`pyvista.Plotter.add_point_labels` method makes it easy to add # point labels to a scene. help(pv.Plotter.add_point_labels) # %% # Label Point Cloud # ++++++++++++++++++ # # Let's make a random point cloud and label each point in 3D space # Make some random points poly = pv.PolyData(np.random.rand(10, 3)) # %% # Add string labels to the point data - this associates a label with every # node: poly["My Labels"] = [f"Label {i}" for i in range(poly.n_points)] poly # %% # Now plot the points with labels using :func:`pyvista.Plotter.add_point_labels` # (your code here, answer below) # %% plotter = pv.Plotter() plotter.add_point_labels(poly, "My Labels", point_size=20, font_size=36) plotter.show() # %% # Label Node Locations # ++++++++++++++++++++ # # This example will label the nodes of a mesh with their coordinate locations # Load example beam file grid = pv.UnstructuredGrid(examples.hexbeamfile) # %% # Create plotting class and add the unstructured grid plotter = pv.Plotter() plotter.add_mesh(grid, show_edges=True, color="tan") # Add labels to points on the yz plane (where x == 0) points = grid.points mask = points[:, 0] == 0 plotter.add_point_labels(points[mask], points[mask].tolist(), point_size=20, font_size=36) plotter.camera_position = [(-1.5, 1.5, 3.0), (0.05, 0.6, 1.2), (0.2, 0.9, -0.25)] plotter.show() # %% # Label Scalar Values # +++++++++++++++++++ # # This example will label each point with their scalar values mesh = examples.load_uniform().slice() # %% pl = pv.Plotter() # Add the mesh: pl.add_mesh(mesh, scalars="Spatial Point Data", show_edges=True) # Add the points with scalar labels: pl.add_point_scalar_labels(mesh, "Spatial Point Data", point_size=20, font_size=36) # Use a nice camera position: pl.camera_position = [(7, 4, 5), (4.4, 7.0, 7.2), (0.8, 0.5, 0.25)] pl.show() # %% # .. raw:: html # # # #

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