added density type

src/Plots.jl

@@ -35,6 +35,8 @@ export
   bar!,
   histogram,
   histogram!,
+  density,
+  density!,
   heatmap,
   heatmap!,
   hexbin,
@@ -135,10 +137,12 @@ bar(args...; kw...)        = plot(args...; kw...,  linetype = :bar)
 bar!(args...; kw...)       = plot!(args...; kw..., linetype = :bar)
 histogram(args...; kw...)  = plot(args...; kw...,  linetype = :hist)
 histogram!(args...; kw...) = plot!(args...; kw..., linetype = :hist)
+density(args...; kw...)    = plot(args...; kw...,  linetype = :density)
+density!(args...; kw...)   = plot!(args...; kw..., linetype = :density)
 heatmap(args...; kw...)    = plot(args...; kw...,  linetype = :heatmap)
 heatmap!(args...; kw...)   = plot!(args...; kw..., linetype = :heatmap)
-hexbin(args...; kw...)    = plot(args...; kw...,  linetype = :hexbin)
-hexbin!(args...; kw...)   = plot!(args...; kw..., linetype = :hexbin)
+hexbin(args...; kw...)     = plot(args...; kw...,  linetype = :hexbin)
+hexbin!(args...; kw...)    = plot!(args...; kw..., linetype = :hexbin)
 sticks(args...; kw...)     = plot(args...; kw...,  linetype = :sticks, marker = :ellipse)
 sticks!(args...; kw...)    = plot!(args...; kw..., linetype = :sticks, marker = :ellipse)
 hline(args...; kw...)      = plot(args...; kw...,  linetype = :hline)

src/args.jl

@@ -10,7 +10,7 @@ const _allAxes = [:auto, :left, :right]
 const _3dTypes = [:path3d, :scatter3d]
 const _allTypes = vcat([
                         :none, :line, :path, :steppre, :steppost, :sticks, :scatter,
-                        :heatmap, :hexbin, :hist, :bar, :hline, :vline, :ohlc, :contour
+                        :heatmap, :hexbin, :hist, :density, :bar, :hline, :vline, :ohlc, :contour
                        ], _3dTypes)
 @compat const _typeAliases = Dict(
     :n             => :none,
@@ -29,10 +29,15 @@ const _allTypes = vcat([
     :stems         => :sticks,
     :dots          => :scatter,
     :histogram     => :hist,
+    :pdf           => :density,
     :contours      => :contours,
     :line3d        => :path3d,
   )
 
+ishistlike(lt::Symbol) = lt in (:hist, :density)
+islinelike(lt::Symbol) = lt in (:line, :path, :steppre, :steppost)
+isheatmaplike(lt::Symbol) = lt in (:heatmap, :hexbin)
+
 
 const _allStyles = [:auto, :solid, :dash, :dot, :dashdot, :dashdotdot]
 @compat const _styleAliases = Dict(
@@ -91,12 +96,12 @@ const _allScales = [:identity, :log, :log2, :log10, :asinh, :sqrt]
     :ln   => :log,
   )
 
-supportedAxes(::PlottingPackage) = _allAxes
-supportedTypes(::PlottingPackage) = _allTypes
-supportedStyles(::PlottingPackage) = _allStyles
-supportedMarkers(::PlottingPackage) = _allMarkers
-supportedScales(::PlottingPackage) = _allScales
-subplotSupported(::PlottingPackage) = true
+supportedAxes(::PlottingPackage) = [:left]
+supportedTypes(::PlottingPackage) = []
+supportedStyles(::PlottingPackage) = [:solid]
+supportedMarkers(::PlottingPackage) = [:none]
+supportedScales(::PlottingPackage) = [:identity]
+subplotSupported(::PlottingPackage) = false
 
 supportedAxes() = supportedAxes(backend())
 supportedTypes() = supportedTypes(backend())

src/backends/pyplot.jl

@@ -126,6 +126,7 @@ function getPyPlotFunction(plt::Plot, axis::Symbol, linetype::Symbol)
   # ax[:set_ylabel](plt.plotargs[:yrightlabel])
   fmap = @compat Dict(
       :hist       => :hist,
+      :density    => :hist,
       :sticks     => :bar,
       :bar        => :bar,
       :heatmap    => :hexbin,
@@ -246,13 +247,14 @@ function _add_series(pkg::PyPlotPackage, plt::Plot; kw...)
   plotfunc = getPyPlotFunction(plt, d[:axis], lt)
 
   # we have different args depending on plot type
-  if lt in (:hist, :sticks, :bar)
+  if lt in (:hist, :density, :sticks, :bar)
 
     # NOTE: this is unsupported because it does the wrong thing... it shifts the whole axis
     # extra_kwargs[:bottom] = d[:fill]
 
-    if lt == :hist
+    if ishistlike(lt)
       extra_kwargs[:bins] = d[:nbins]
+      extra_kwargs[:normed] = lt == :density
     else
       extra_kwargs[:linewidth] = (lt == :sticks ? 0.1 : 0.9)
     end
@@ -312,7 +314,7 @@ function _add_series(pkg::PyPlotPackage, plt::Plot; kw...)
   end
 
   # do the plot
-  d[:serieshandle] = if lt == :hist
+  d[:serieshandle] = if ishistlike(lt)
     plotfunc(d[:y]; extra_kwargs...)[1]
   elseif lt == :contour
     # NOTE: x/y are backwards in pyplot, so we switch the x and y args (also y is reversed), 
@@ -607,7 +609,7 @@ end
 function addPyPlotLegend(plt::Plot, ax)
   if plt.plotargs[:legend]
     # gotta do this to ensure both axes are included
-    args = filter(x -> !(x[:linetype] in (:hist,:hexbin,:heatmap,:hline,:vline,:contour, :path3d, :scatter3d)), plt.seriesargs)
+    args = filter(x -> !(x[:linetype] in (:hist,:density,:hexbin,:heatmap,:hline,:vline,:contour, :path3d, :scatter3d)), plt.seriesargs)
     if length(args) > 0
       leg = ax[:legend]([d[:serieshandle] for d in args],
                   [d[:label] for d in args],

src/backends/supported.jl

@@ -57,7 +57,9 @@ supportedArgs(::GadflyPackage) = [
     :nlevels,
   ]
 supportedAxes(::GadflyPackage) = [:auto, :left]
-supportedTypes(::GadflyPackage) = [:none, :line, :path, :steppre, :steppost, :sticks, :scatter, :heatmap, :hexbin, :hist, :bar, :hline, :vline, :contour]
+supportedTypes(::GadflyPackage) = [:none, :line, :path, :steppre, :steppost, :sticks, 
+                                   :scatter, :heatmap, :hexbin, :hist, :bar,
+                                   :hline, :vline, :contour]
 supportedStyles(::GadflyPackage) = [:auto, :solid, :dash, :dot, :dashdot, :dashdotdot]
 supportedMarkers(::GadflyPackage) = vcat(_allMarkers, Shape)
 supportedScales(::GadflyPackage) = [:identity, :log, :log2, :log10, :asinh, :sqrt]
@@ -136,7 +138,9 @@ supportedArgs(::PyPlotPackage) = [
     :markeralpha,
   ]
 supportedAxes(::PyPlotPackage) = _allAxes
-supportedTypes(::PyPlotPackage) = [:none, :line, :path, :steppre, :steppost, :sticks, :scatter, :heatmap, :hexbin, :hist, :bar, :hline, :vline, :contour, :path3d, :scatter3d]
+supportedTypes(::PyPlotPackage) = [:none, :line, :path, :steppre, :steppost, :sticks,
+                                   :scatter, :heatmap, :hexbin, :hist, :density, :bar,
+                                   :hline, :vline, :contour, :path3d, :scatter3d]
 supportedStyles(::PyPlotPackage) = [:auto, :solid, :dash, :dot, :dashdot]
 # supportedMarkers(::PyPlotPackage) = [:none, :auto, :rect, :ellipse, :diamond, :utriangle, :dtriangle, :cross, :xcross, :star5, :hexagon]
 supportedMarkers(::PyPlotPackage) = vcat(_allMarkers, Shape)