3D Scatter Plots in Dash syntax

Dash Python
1

Is there an example of the proper syntax for a 3D scatter plot (or 3D plotting in general) in Dash?

I have tried a few variations of plotly python syntax from the general plotly library as well as adding the “3D Scatter” and a “z” variable to a 2D scatter plot in Dash. Both did not work.

If someone has information as well on syntax for well functioning 3D surface plots I would be very grateful!

2

Some example syntax you could place in a Div or as a callback:

def scatter3D(value):
    data=[dict(
            x=df['x'],
            y=df['y'],
            z=df['z'],
            mode='markers',
            type='scatter3d',
            text=None,
            marker=dict(
                size=12,
                opacity=0.8
                )
            )
        ]
1 Like
3

Thank you! I was able to generate the graph fine, however, using Dash I am having trouble manipulating the axises. I would lie titles on the x, y, and z axis as well as different axis type as in either linear or log. I have a function set up to use radio items and drop downs to change these features, however, for 3D they do not change.

I have had success in 2D with the same goals.

4

So under layout, you want to add the scene dictionary:

layout={
        'scene': {'xaxis': {
                            'title': 'some xaxis',
                            'type': 'linear',
                            },
                }
}

This gallery example has most of what you need: https://github.com/plotly/dash-drug-discovery-demo/blob/master/app.py

5

Thank you again! It worked perfectly for me.

6

Hi Adam!

Could you please show an example of how you integrated the function scatter3D in the code of your app?

Thanks in advance!

7

Hi! Sorry for the delayed reply. What types of code examples would you like? I can paste in my example of the plot in the ‘html’ but also the logic portion of how I generate the plot.

This is my return statement for the plot. I have posted it before so it may be what you are looking for as well:

return {

‘data’: traces,
‘layout’: go.Layout(
scene = {
‘xaxis’: {
‘title’: 'X: ’ + xaxis_column_name_3d,
‘type’: ‘linear’ if xaxis_type_3d == ‘Linear’ else ‘log’,
},
‘yaxis’: {
‘title’: 'Y: ’ + yaxis_column_name_3d,
‘type’: ‘linear’ if yaxis_type_3d == ‘Linear’ else ‘log’,
},
‘zaxis’: {
‘title’: 'Z: ’ + zaxis_column_name_3d,
‘type’: ‘linear’ if zaxis_type_3d == ‘Linear’ else ‘log’,
},
},
margin={‘l’: 40, ‘b’: 40, ‘t’: 10, ‘r’: 10},
legend={‘x’: 1, ‘y’: 1},
hovermode= ‘closest’

    )

}