Merge pull request #30 from greimel/gre/ggplot2

Improving ggplot2 theme

src/ggplot2.jl

@@ -23,14 +23,42 @@
 #           fglegend = :lightgray,
 #           fgguide  = :black)
 
+const _ggplot_colors = Dict(
+    :gray92 => RGB(fill(0.92, 3)...),
+    :gray20 => RGB(fill(0.2, 3)...),
+    :gray30 => RGB(fill(0.3, 3)...)
+    )
+
+
 _themes[:ggplot2] = PlotTheme(
+    ## Background etc
     bg = :white,
-    bginside = :lightgray,
-    bglegend = plot_color(:lightgray, 0.8),
-    framestyle = :grid,
-    gridcolor = :white,
-    gridalpha = 1,
-    fgtext = :grey,
+    bginside = _ggplot_colors[:gray92],
+    bglegend = _ggplot_colors[:gray92],
     fglegend = :white,
     fgguide = :black,
-)
+    widen=true,
+    ## Axes / Ticks
+    #framestyle = :grid,
+    #foreground_color_tick = _ggplot_colors[:gray20], # tick color not yet implemented
+    foreground_color_axis = _ggplot_colors[:gray20], # tick color
+    tick_direction=:out,
+    foreground_color_border =:white, # axis color
+    foreground_color_text = _ggplot_colors[:gray30], # tick labels
+    gridlinewidth = 1,
+    #tick label size = *0.8,
+    ### Grid
+    foreground_color_grid = :white,
+    gridalpha = 1,
+    ### Minor Grid
+    minorgrid = true,
+    minorgridalpha = 1,
+    minorgridlinewidth=0.5, # * 0.5
+    foreground_color_minor_grid=:white,
+    #foreground_color_minortick=:white, ## not yet implemented
+    minorticks = 2,
+    ## Lines and markers
+    markerstrokealpha = 0,
+    markerstrokewidth = 0
+    #showaxis= :false
+    )