Thanks @mcmcclur but I don’t think I was clear in my explanation.
What I’m looking for is a chart that scales when you resize the browser window. Yes, Plot does that by default. But the problem is that a chart can become very small in height. And what I’d like to have a min-height for a chart.
Update
Using Plot.plot({ width: Math.max(width, 550), … }) pretty much solved it for me. Found the solution over here.