Add a lot of shapes to dash graph

Dash Python
1

Hi there,

I am trying to draw a lot of rectangular shapes onto my dcc.Graph. I was doing that by first creating the shapes and then setting them to fig.layout.shapes:

shapes = [go.layout.Shape(r) for r in rectangles]
        fig.update_layout(shapes=shapes)

where each retangle is just a dictionary as follows:

dict(
                    type="rect",
                    layer='below',
                    fillcolor=fill_color,
                    x0=x0,
                    x1=x1,
                    y0=y_min,
                    y1=y_max,
                    opacity=0.5,
                    xref='x1',
                    yref=yref,
                    line=dict(width=1)
                )

This however seems to be very slow when trying to plot around 1000 (or more) shapes. The reason is probably that it does not support WebGL.

So what other options do i have? My graph is displaying some time-series data with go.Scattergl that already has some annotations, which I want to display with such rectangular shapes.

Thanks a lot for any advice!