Add :pixel to native seriestype for pyplot and gr

src/backends.jl

@@ -355,6 +355,7 @@ const _gr_seriestype = [
     :wireframe,
     :volume,
     :shape,
+    :pixel,
 ]
 const _gr_style = [:auto, :solid, :dash, :dot, :dashdot, :dashdotdot]
 const _gr_marker = _allMarkers
@@ -566,6 +567,7 @@ const _pyplot_seriestype = [
     :scatter3d,
     :surface,
     :wireframe,
+    :pixel,
 ]
 const _pyplot_style = [:auto, :solid, :dash, :dot, :dashdot]
 const _pyplot_marker = vcat(_allMarkers, :pixel)

src/backends/pyplot.jl

@@ -479,6 +479,11 @@ function py_add_series(plt::Plot{PyPlotBackend}, series::Series)
         end
     end
 
+    if st == :pixel
+        handle = ax."plot"(x, y, ",")
+        push!(handles, handle)
+    end
+
     # add markers?
     if series[:markershape] != :none && st in (:path, :scatter, :path3d,
                                           :scatter3d, :steppre, :steppost,

src/recipes.jl

@@ -174,12 +174,15 @@ end
 end
 @deps scatterpath path scatter
 
+# ---------------------------------------------------------------------------
+# pixel
+
 @recipe function f(::Type{Val{:pixel}}, x, y, z)
     x := x
     y := y
+    seriestype := :pixel
     markersize := 1
     markerstrokewidth --> 0
-    seriestype := :scatter
     ()
 end