Axes3D.text() Annotate 3D Scatter Plot

Question

Can't get the 3D text working to annotate the scatter plot points.

Tried Axes3D.text, plt.text but keep getting 'missing required positional argument 's'. How do you annotate in 3D in a loop?

from mpl_toolkits.mplot3d import Axes3D 
import matplotlib.pyplot as plt
from matplotlib.patches import Ellipse
import pandas as pd
import numpy as np

df = pd.read_csv (r'J:\Temp\Michael\Python\9785.csv')

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

#Scatter plot
for i in df.index:
    x = df.at[i,'x']
    y = df.at[i,'y']
    z = df.at[i,'h']
    ax.scatter(xs=x, ys=y, zs=z, s=20,color='red',marker='^')
    label = df.at[i,'to']
    Axes3D.text(x+0.8,y+0.8,z+0.8, label, zdir=x)

TypeError: text() missing 1 required positional argument: 's'

Possible duplicate of [Matplotlib: Annotating a 3D scatter plot](https://stackoverflow.com/questions/10374930/matplotlib-annotating-a-3d-scatter-plot) — Sheldore, May 24 '19 at 13:04
[Here](https://matplotlib.org/gallery/mplot3d/text3d.html) is the official documentation — Sheldore, May 24 '19 at 13:04
@Sheldore thanks I've been checking those and trying to come right, but can't get it to work somehow... — M.Lord, May 24 '19 at 13:06
Provide some initial lines of your dataframe so that we can run your code — Sheldore, May 24 '19 at 13:27
You can post the solution as a self-answer and then accept it. This will help the potential future readers of your question. — Sheldore, May 24 '19 at 13:38

score 3 · Accepted Answer · answered May 24 '19 at 13:54

Changing: ax = fig.add_subplot(111, projection='3d')

to: ax = fig.gca(projection='3d')

solved the problem. Used ax.text.

from mpl_toolkits.mplot3d import Axes3D 
import matplotlib.pyplot as plt
from matplotlib.patches import Ellipse
import pandas as pd
import numpy as np

df = pd.read_csv (r'J:\Temp\Michael\Python\9785.csv')

fig = plt.figure()
ax = fig.gca(projection='3d')

#Scatter plot
for i in df.index:
    df.set_index('to')
    x = df.at[i,'x']
    y = df.at[i,'y']
    z = df.at[i,'h']
    ax.scatter(xs=x, ys=y, zs=z, s=20,color='red',marker='^')
    ax.text(x+0.8,y+0.8,z+0.8, df.at[i,'to'], size=10, zorder=1)

Axes3D.text() Annotate 3D Scatter Plot

1 Answers1