##### How to draw rectangles in pyplot?
 How to draw rectangles in pyplot? SuchtyTV Programmer named Tim Posts: 6 Threads: 2 Joined: Jul 2019 Reputation: Jul-08-2019, 11:15 AM Hey, ```from mpl_toolkits.mplot3d import Axes3D import numpy as np from mpl_toolkits.mplot3d import Axes3D from mpl_toolkits.mplot3d.art3d import Poly3DCollection import matplotlib.pyplot as plt zs = [] xs = [] ys = [] fig = plt.figure() axrec = Axes3D(fig) ax = fig.add_subplot(111, projection='3d') points = [ (1.2,5,6), (1.2,7,6), (1.2,5,6), (1.2,8,6), (7,8,5), (5,7,6), (1,2,3), (4,5,6), (2,1,1), ] rectangle = [ ((1,1,1),(2,2,2),(1,3,4)), ((2,3,4),(9,9,9),(3,4,5)), ] for val in points: (x,y,z) = val xs.append(x) ys.append(y) zs.append(z) for val in rectangle: (a,b,c) = val verts = [a,b,c] axrec.add_collection3d(Poly3DCollection(verts)) ax.scatter(xs, ys, zs, marker='o') plt.show()```this code is supposed to draw all rectangles and points. However, I am not sure how to command the library to draw rectangles. Thanks for your help! Reply SuchtyTV Programmer named Tim Posts: 6 Threads: 2 Joined: Jul 2019 Reputation: Jul-10-2019, 07:25 AM Hey, I am still looking for help. Thank you! Reply SuchtyTV Programmer named Tim Posts: 6 Threads: 2 Joined: Jul 2019 Reputation: Jul-14-2019, 09:53 AM bump Thank you! Reply Posts: 818 Threads: 1 Joined: Mar 2018 Reputation: Jul-14-2019, 10:07 AM You need to be sure about points that forms a rectangle. Look at the simplest example below: ```from mpl_toolkits.mplot3d import Axes3D import numpy as np from mpl_toolkits.mplot3d import Axes3D from mpl_toolkits.mplot3d.art3d import Poly3DCollection import matplotlib.pyplot as plt fig = plt.figure() ax = fig.add_subplot(111, projection='3d') rects = [[[0, 0, 0], [0, 0, 1], [0, 1, 1], [0, 1, 0 ], [0, 0, 0]]] # Each rectangle is presented as a set of points # array rects consist of rectangles ax.add_collection3d(Poly3DCollection(rects)) vv = np.array(rects) ax.scatter(vv[0][:, 0], vv[0][:, 1], vv[0][:, 2], color='r') plt.show()``` Reply SuchtyTV Programmer named Tim Posts: 6 Threads: 2 Joined: Jul 2019 Reputation: Jul-14-2019, 02:41 PM Uff, my fault !!! I confused triangle with a rectangle! I would like to draw triangles... Sorry, not a foreigner... Reply

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