line3D set_data only takes in x and y data

[fragapanagos]

Bug report

I was attempting to make an interactive 3D line plot in jupyter notebook, but noticed that line3D set_data method only takes in x and y data.

Code for reproduction
The code below can be run outside of jupyter notebook to demonstrate the problem:

import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
x = [0, 1]
y = [0, 1]
z = [0, 1]
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
line = ax.plot(x,y,z)[0]
line.set_data([0,2], [0,2], [0,2])
plt.show()

Actual outcome

ValueError: too many values to unpack (expected 2)

Expected outcome

I would expect the set_data method exposed by line3D to take in 3 values.

Matplotlib version

• Matplotlib Version: 2.0.0
• Python Version: 3.6.0

[tacaswell]

I suspect you want to do this with the current set_data + set_3d_properties methods.

Exact work:

• The set_data method needs to be over-ridden in mpl_toolkits.mplot3D.art3D.Line3D
• add a test (does not raise should be enough)
• bonus: also do get_data

[WeatherGod]

You can't override set/get_data. Those methods are widely used throughout the codebase and elsewhere, and it is understood to mean the data as displayed in the 2d coordinates. This is why we really need a new set/get data method that is uniform across all artist types that refers to something slightly different: getting and setting the raw data. For most 2d artists, that would be synonymous with set/get_data.

…

On Wed, Jul 19, 2017 at 8:18 PM, Thomas A Caswell ***@***.***> wrote: I suspect you want to do this with the current set_data + set_3d_properties methods. Exact work: - The set_data method needs to be over-ridden in mpl_toolkits.mplot3D.art3D.Line3D - add a test (does not raise should be enough) - bonus: also do get_data — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#8914 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AARy-GVQGPgRX8R9FrGHu5F7Fc7txoo_ks5sPpzPgaJpZM4OdVp6> .

[eeshugerman]

@WeatherGod

You can't override set/get_data. Those methods are widely used throughout the codebase and elsewhere, and it is understood to mean the data as displayed in the 2d coordinates. This is why we really need a new set/get data method

In the meantime, should a set_data_3d method be added to mpl_toolkits.mplot3D.art3D.Line3D? I'm new, looking for something to get started with.