我正在尝试在Gadfly. 为此，我正在使用free_y_axis = true，它确实有效。但是，当我添加颜色美学 ( color=:product) 时，free_y_axis 似乎不再起作用。有任何想法吗？
绘图的代码是：
using Gadfly
using DataFrames
plot(flow, ygroup=:rawmat_type, x=:period, y=:quantity, color=:product,
Geom.subplot_grid(Geom.bar(position=:stack), free_y_axis=true),
Theme(background_color="white", bar_spacing=2mm, key_title_font_size=9pt),
Scale.y_continuous(format=:plain))
流数据帧为：
Row │ product rawmat type period quantity rawmat_type
─────┼──────────────────────────────────────────────────────────────
1 │ lemon_pie cookies cheap 1 10000.0 cookies_cheap
2 │ lemon_pie cookies cheap 2 10000.0 cookies_cheap
3 │ lemon_pie cookies cheap 3 10000.0 cookies_cheap
4 │ lemon_pie cookies cheap 4 10000.0 cookies_cheap
5 │ lemon_pie cookies cheap 5 10000.0 cookies_cheap
6 │ brownie sugar cane 1 100.0 sugar_cane
7 │ brownie sugar cane 2 100.0 sugar_cane
8 │ brownie sugar cane 3 100.0 sugar_cane
9 │ brownie sugar cane 4 100.0 sugar_cane
10 │ brownie sugar cane 5 100.0 sugar_cane
11 │ lemon_pie lemon cheap 1 1000.0 lemon_cheap
12 │ lemon_pie lemon cheap 2 1000.0 lemon_cheap
13 │ lemon_pie lemon cheap 3 1000.0 lemon_cheap
14 │ lemon_pie lemon cheap 4 1000.0 lemon_cheap
15 │ lemon_pie lemon cheap 5 1000.0 lemon_cheap
16 │ brownie cacao bitter 1 250.0 cacao_bitter
17 │ brownie cacao bitter 2 250.0 cacao_bitter
18 │ brownie cacao bitter 3 250.0 cacao_bitter
19 │ brownie cacao bitter 4 250.0 cacao_bitter
20 │ brownie cacao bitter 5 250.0 cacao_bitter
21 │ lemon_pie lemon premium 1 500.0 lemon_premium
22 │ lemon_pie lemon premium 2 500.0 lemon_premium
23 │ lemon_pie lemon premium 3 500.0 lemon_premium
24 │ lemon_pie lemon premium 4 500.0 lemon_premium
25 │ lemon_pie lemon premium 5 500.0 lemon_premium
我附上了我得到的图，我想在其中释放 y 轴，同时仍然对产品变量使用颜色美学。 面包房地块
谢谢！