add option to add "select" mode on any figure (specifically, Heatmap)

It doesn't seem possible to add a "select" dragmode to a figure with a go.Heatmap object. You can specify the starting dragmode as "select", in which case you can immediately drag and select. But if I wanted to pan, I can't choose to select afterwards. I cannot add it to the modebar. I would like to be able to do this so I can select a region of interest on my heatmap, and setup a callback to set this region of interest in my code. I don't care about actually selecting the points in the heatmap, just the bounds of the selection box.

My workaround to this is to add a go.Scatter to my figure:

layout =  go.Layout(
        showlegend=False,
        autosize=False,
        xaxis=dict(
            showgrid=False,
            zeroline=False,
            visible=False,
            range=[0, images.shape[2] - 1],
        ),
        yaxis=dict(
            showgrid=False,
            zeroline=False,
            visible=False,
            range=[images.shape[1] - 1, 0],
            scaleanchor="x",
            scaleratio=1,
        ),
        dragmode="zoom",
        modebar=go.layout.Modebar(remove=["lasso"]),
    )

heat = go.FigureWidget(
    data=[
        go.Scatter(
            x=[0],
            y=[0],
        ),
        go.Heatmap(z=current_image, colorscale="Viridis"),
    ],
    layout=layout,
)

This works, but is kind of silly...

Commencez par l’exemple de go.FigureWidget, en vous concentrant sur layout.dragmode, les options de la modebar et l’interaction avec go.Heatmap décrite dans l’issue. Vérifiez comment les callbacks de sélection et les limites de sélection sont exposés lorsque la figure contient uniquement un Heatmap. C’est terminé lorsqu’il est possible de basculer entre pan ou zoom et select via la modebar sans ajouter de go.Scatter factice.