Add colour to point?

[edent]

Is it possible to change the colours of individual points in a pointcloud? For example, having a different RGB value assigned to specific points.

Thanks for the library, BTW, has been very useful.

[daavoo]

If you know the index of the points that you want to change, you can assign RGB values to individual points as follows:

import numpy as np
from pyntcloud import PyntCloud

cloud = PyntCloud.from_file("tests/data/diamond.ply")

# Should show 4 red points, 1 blue, 1 green.
cloud.plot()

point_to_change = 0
new_rgb = np.array([255, 255, 255], dtype=np.uint8)

cloud.points.loc[point_to_change, ["red", "green", "blue"]] = new_rgb

# Should show 3 red points, 1 blue, 1 green and 1 white.
cloud.plot()

Is that what you meant?

[edent]

That's perfect! For anyone else searching for the error KeyError: "['red' 'green' 'blue'] not in index", I fixed this by starting with a DataFrame like:

`df = pd.DataFrame(np.random.uniform(0.1,1.0, size=(1024, 6)),columns=['x', 'y', 'z',"red","green","blue"])