Merge f7c06da93e569b90cf88f9805185f25ed4dc60c2 into b232410d25da9618bd9f123e2beddb5fd5a16279

src/recipes.jl

@@ -719,8 +719,21 @@ end
 
     # create a list of shapes, where each shape is a single boxplot
     shapes = Shape[]
-    groupby = extractGroupArgs(d[:x])
 
+    legend --> false
+
+    if length(d[:x])==1
+        widths, centers = violin_coords(d[:y], trim=trim)
+        # normalize
+        widths = _box_halfwidth * widths / maximum(widths)
+
+        # make the violin
+        xcenter = discrete_value!(d[:subplot][:xaxis], d[:x][1])[1]
+        xcoords = vcat(widths, -reverse(widths)) + xcenter
+        ycoords = vcat(centers, reverse(centers))
+        push!(shapes, Shape(xcoords, ycoords))
+    else
+        groupby = extractGroupArgs(d[:x])
         for (i, glabel) in enumerate(groupby.groupLabels)
 
             # get the edges and widths
@@ -736,6 +749,8 @@ end
             ycoords = vcat(centers, reverse(centers))
             push!(shapes, Shape(xcoords, ycoords))
         end
+    end
+
 
     # d[:plotarg_overrides] = KW(:xticks => (1:length(shapes), groupby.groupLabels))
     seriestype := :shape