I am using dash and have some very large heatmaps which are not possible to be rendered. But since most computer monitors only have 1920x1080 pixels it doesn’t seem necessary to render the entire heatmap. I have a workaround where using the (figure,react) callback I monitor the x and y ranges and then supply an interpolated heatmap with fewer points.
It would be nice if this feature could be added.
If you like I could supply an example, but I don’t think that it will be particularly helpful.