enable zooming of any rectangular shape on a Plotly heatmap

Currently there are 2 “zooming” behaviours in Plotly.JS heatmaps:

• Demo here : Here you can take any rectangular shape for the zoom (click, drag and drop). But then the pixels are not square, which is not ok for some applications (the aspect ratio is not preserved, and sometimes it should be preserved):

• Demo here : Here the pixels are square thanks to {'yaxis': {'scaleanchor': 'x'}}, but then you can zoom only with a certain aspect ratio rectangular shape, which is sometimes a limiting factor for the UX/UI:

But often, it is useful to have both, i.e. being able to draw a rectangle selection zoom of any shape + keep square-shape pixels.

Eric found a solution here: https://stackoverflow.com/a/76142244/1422096

IMHO this feature should be available directly in Plotly heatmaps (because it's the standard expected behaviour, which is common in Matplotlib etc.), what do you think? @lvlte @archmoj

Commencez par reproduire les deux démos de cartes thermiques liées et par lire la solution Stack Overflow liée. Comparez leur comportement en matière de zoom et de rapport d’aspect, puis déterminez comment l’interaction proposée devrait s’intégrer aux Plotly heatmaps ; le travail sera considéré comme terminé lorsqu’un zoom rectangulaire arbitraire préservera les pixels carrés et sera couvert par des tests appropriés.