[BUG] FigureResampler, FigureWidgetResampler, and register_plotly_resampler do not work for box traces

[joshua-xia]

My original figure is about 20MB, I try the three methods in dash callback to return the figure to web frontend, but it seems the figure is not compressed

code as the following:

@callback( Output("dd-figure-container", "children"), Input("demo-dropdown", "value"), State("sessionStore", "data"), ) def update_output(value, sessionID): data = query_data(sessionID) fig = plot_box(data, value)

return dcc.Graph(figure=fig)

register_plotly_resampler(mode='auto')

def plot_box(data, select_column): fig = FigureWidgetResampler(go.Figure()) fig.add_trace( go.Box( x=data[select_column], y=data.iloc[:, 1], boxpoints="outliers", ) )

return fig

the data is same

[jonasvdd]

@joshua-xia,

In order to create dash-app's it is considered best practice to use the plain FigureResampler class instead of using the register_plotly_resampler method.

I suggest you take a look at our

• dash app docs
• dash app examples

Hope this helps you further, Jonas

[joshua-xia]

@joshua-xia,

In order to create dash-app's it is considered best practice to use the plain FigureResampler class instead of using the register_plotly_resampler method.

I suggest you take a look at our

• dash app docs
• dash app examples

Hope this helps you further, Jonas

Thanks Jonas very much for your answer.

I reference the https://github.com/predict-idlab/plotly-resampler/blob/main/examples/dash_apps/01_minimal_global.py sample to modify my code, but the figure push to web frontend (browser) still be 20MB.

I wonder the FigureResampler does work for Box figure or not

I update figure as following:

global fig

fig.replace(go.Figure())
fig.add_trace(
    go.Box(
        x=data[value],
        y=data.iloc[:, 1],
        name="Box Diagram By Label",
        boxpoints="outliers",
    )
)

return fig

fig.register_update_graph_callback done "graph-id" and "trace-updater" also be set

[jonasvdd]

@joshua-xia,

My bad, I looked over the line that you use go.Box in your example. Indeed, plotly-resampler only supports the aggregation of scatter[gl] traces; as outlined #229

Some references: possible workaround: https://stackoverflow.com/questions/54128082/how-to-plot-a-boxplot-using-aggregates-in-plotly reason why box-plot sends all data to js: https://github.com/plotly/plotly.py/issues/2456

[joshua-xia]

@joshua-xia,

My bad, I looked over the line that you use go.Box in your example. Indeed, plotly-resampler only supports the aggregation of scatter[gl] traces; as outlined #229

Some references: possible workaround: https://stackoverflow.com/questions/54128082/how-to-plot-a-boxplot-using-aggregates-in-plotly reason why box-plot sends all data to js: plotly/plotly.py#2456

I got it and close this issue please, Thanks!