I know that Plotly can create great heatmaps, and I want to know how to draw a heatmap on my own background image (png)
Hi @Kesqqq ,
You can use fig.add_layout_image to add background image .
Hello,
What’s particularly interesting here is the blending of static and dynamic content—your background image acts as a static reference or canvas, while the heatmap adds interactive, data-driven layers on top. This could be especially powerful in scenarios like mapping temperature distribution on a floor plan or visualizing data overlaid on a geographic map. A key point to consider is how you’ll align the heatmap with the background image. Plotly allows you to control axis ranges, so if your background image corresponds to specific coordinates or dimensions (e.g., a map or schematic), you’d want to match your heatmap data’s coordinate system to the image. You might need to set the xaxis and yaxis properties in Plotly to position the heatmap accurately on the image. Another cool idea could be to use a transparent PNG for the background so you could change the opacity of the heatmap or even animate it, providing a rich, interactive experience.
Thank you very much for the ideas and links you provided! I will try it later
1 Like