Offline plot: Invalid value of type 'numpy.int64' received for the 'name' property of scatter3d

[NTNguyen13]

I have made a python script to draw a 3D scatter map. Usually I can draw it online by the code:

x = []
y = []
z = []
hover = []
trace = {}
layout = {}

#creating trace
for i in range(len(np.unique(y_le))):
    name = np.unique(y_random)[i]
    # color = range(len(X_tsne['Name'].unique))[i]
    color = c[i]
    x = X_tsne[y_random == name][:, 0]
    y = X_tsne[y_random == name][:, 1]
    z = X_tsne[y_random == name][:, 2]
    hover = filename_random[y_random == name]

    trace = dict(
        name=name,
        x=x, y=y, z=z,
        type="scatter3d",
        mode='markers',
        # colorscale='Viridis'
        text=hover,
        marker=dict(size=2, color=color, line=dict(width=0)))
    data.append(trace)

#creating fig
layout = dict(
    width=1600,
    height=1200,
    autosize=False,
    title='t-SNE embedding - hover',
    scene=dict(
        xaxis=dict(
            gridcolor='rgb(255, 255, 255)',
            zerolinecolor='rgb(255, 255, 255)',
            showbackground=True,
            backgroundcolor='rgb(230, 230,230)'
        ),
        yaxis=dict(
            gridcolor='rgb(255, 255, 255)',
            zerolinecolor='rgb(255, 255, 255)',
            showbackground=True,
            backgroundcolor='rgb(230, 230,230)'
        ),
        zaxis=dict(
            gridcolor='rgb(255, 255, 255)',
            zerolinecolor='rgb(255, 255, 255)',
            showbackground=True,
            backgroundcolor='rgb(230, 230,230)'
        ),
        aspectratio=dict(x=1, y=1, z=0.7),
        aspectmode='manual'
    ),
)

fig = dict(data=data, layout=layout)
url = py.plot(fig, filename='tSNE embedding')

However, when I tried to draw them offline by this:
plotly.offline.plot(fig)

it raises the error
ValueError:
Invalid value of type 'numpy.int64' received for the 'name' property of scatter3d
Received value: 0
The 'name' property is a string and must be specified as:
- A string
- A number that will be converted to a string

I tried to replace the line name = name in making trace by using name = '%d' % name but it still the same error

How can I draw offline plot by plotly in this case?

[jonmmease]

Hi @NTNguyen13 ,

The error message is talking about about the name property that you specify on this line:

trace = dict(
        name=name,  # <- Here
        x=x, y=y, z=z,
        ...
)

This property must be a Python string or a Python number (int or float) and it's receiving a numpy int64 object. Try casting the numpy int to a Python int like this:

trace = dict(
        name=int(name),  # <- Here
        x=x, y=y, z=z,
        ...
)

[NTNguyen13]

thank you, by using name = int(name) the offline plot works properly now.
I also tried with name = str(name), it also works in case the parameter is a string

[Tatooin3]

Thanks @jonmmease. I had the same problem and casting the variable as a Python int fixed the error.