Define fig size with subplot while height is deprecated in layout

When using height argument in layout, I have a warning telling that this argument is deprecated.
I can use height in plot_ly function directly which is very fine.

However, when using subplot, I did not find a convenient way to specify the total height for the assembled panels. Should subplot accept its own height and width arguments ?

If I understand correctly, subplot uses by default the layout from one of the contained plots. It seems to be the case for width and height but I find it confusing because:

• height is encouraged to be defined outside of the layout function
• it seems counterintuitive that the size of the panels assembly is controled by the size defined in one subpanel

panel1 = plot_ly(x = 1, y = rnorm(100), height = 600, width = 100) %>% 
           add_trace(type = "violin")
panel2 = plot_ly(x = 1, y = rnorm(100), height = 300, width = 300) %>% 
           add_trace(type = "violin")

# Size of individual panels are respected
panel1
panel2

# Total figure size uses size of one subpanel (one can use 'which_layout' to control which)
subplot(panel1, panel2)
subplot(panel2, panel1)

subplot と plot_ly のエントリポイントから始め、layout dimensions と which_layout が現在どのように組み立てられた figure のサイズを決定しているかを確認します。subplot がパネルとは独立して height と width を受け付けるべきかを明確にし、変更を提案する前に、パネルの寸法が競合する場合に期待される動作を定義します。