Observable-Community

There's a near identical usage here that works as I would expect <https://observablehq.com/d/7ef728a12d540472#cell-186>

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`ordersByDateStateType` is a shorter list with less data per row, but I wouldn't think that would affect how `facet` works

In order for Facet to work, the data needs to be the same as was passed to the plot marks. Since you are filtering the data, it isn't the same anymore. Instead you can pass a `fy` channel to the mark
```{
  x: (d) =&gt; new Date(d.orderDate),
  y: "orders",
  stroke: "pizzaType",
  fy: "state"
}```

you are passing `facet` an object (which is correct). That object can have channels, like x or y, and it also needs a `data` key. Like this:
```facet: {
  data: ordersByDateStateType,
  y: "state"
},```


Oh :face_palm: just realized need to use `data` as prop name in facet yeah

i think your original approach would have worked, though `fy` is still a nice trick