x/y aspect ratio

[Fil]

Sometimes I'd want an exact aspect ratio between the two spatial dimensions, for example when they're in the same physical domain (age and years, azimuth and altitude, meters and meters…).

Since the dimensions take into account the margins, the facets etc, this can be a bit difficult to set up.

I'm not sure how we can approach this task, but there must be something better than computing (y(0)-y(1))/(x(0)-x(1)) and tweaking the parameters until it's (almost) equal to 1.