Hi, I’m trying to make a “dotplot”, e.g. see here, with `Plots.jl`

. It mostly works, but I would like to order the categorical values that are shown on the y-axis.

Here is what I have so far,

It is produced by

```
@df d2d scatter(:when, :volume, xrotation=30, markersize=4, markeralpha=0.01, legend=nothing, group=:mover)
```

`:volume`

is a categorical column. I have sorted the levels, …

```
> levels(d2d[:volume])
14-element Array{String,1}:
"VPD430(GM2)"
"VPD434(GM2)"
"VPD435(GM2)"
"VPD436(GM2)"
"VPD440(GM2)"
"VPD441(GM2)"
"VPD442(GM2)"
...
```

But the plot does not honor this sorting. I even sorted the whole `DataFrame`

by `:volume`

and that didn’t change the ordering of the values on the y-axis. Does anyone know how to order the categorical values on the y-axis? Thanks! – Adam