topfunky · hwesselmann · Sep 27, 2016 · Sep 27, 2016 · Sep 27, 2016 · Sep 27, 2016
diff --git a/lib/gruff/base.rb b/lib/gruff/base.rb
@@ -120,7 +120,7 @@ class Base
 
     # Same as font but for the title.
     attr_accessor :title_font
-    
+
     # Specifies whether to draw the title bolded or not.
     attr_accessor :bold_title
 
@@ -187,6 +187,8 @@ class Base
 
     # Experimental
     attr_accessor :additional_line_values
+    attr_accessor :additional_line_labels
+    attr_accessor :additional_line_colors
 
     # Experimental
     attr_accessor :stacked
@@ -282,6 +284,7 @@ def initialize_ivars
       @label_truncation_style = :absolute
 
       @additional_line_values = []
+      @additional_line_labels = []
       @additional_line_colors = []
       @theme_options = {}
 
@@ -653,7 +656,6 @@ def draw_line_markers
       # Draw horizontal line markers and annotate with numbers
       (0..@marker_count).each do |index|
         y = @graph_top + @graph_height - index.to_f * @increment_scaled
-
         @d = @d.fill(@marker_color)
 
         # FIXME(uwe): Workaround for Issue #66
@@ -688,28 +690,37 @@ def draw_line_markers
         end
       end
 
-      # # Submitted by a contibutor...the utility escapes me
-      # i = 0
-      # @additional_line_values.each do |value|
-      #   @increment_scaled = @graph_height.to_f / (@maximum_value.to_f / value)
-      #
-      #   y = @graph_top + @graph_height - @increment_scaled
-      #
-      #   @d = @d.stroke(@additional_line_colors[i])
-      #   @d = @d.line(@graph_left, y, @graph_right, y)
-      #
-      #
-      #   @d.fill = @additional_line_colors[i]
-      #   @d.font = @font if @font
-      #   @d.stroke('transparent')
-      #   @d.pointsize = scale_fontsize(@marker_font_size)
-      #   @d.gravity = EastGravity
-      #   @d = @d.annotate_scaled( @base_image,
-      #                     100, 20,
-      #                     -10, y - (@marker_font_size/2.0),
-      #                     "", @scale)
-      #   i += 1
-      # end
+      # draw additional lines for e.g. scatterplot percentiles
+      i = 0
+      @additional_line_values.each do |value|
+        # draw lines only if they are in the visible spectrum of the diagram
+        if @maximum_value >  value && value > @minimum_value
+          coord = value - @minimum_value
+
+          if @increment > 1
+            position = @graph_height.to_f / (@maximum_value.to_f / coord)
+            y = @graph_top + @graph_height - position
+          else
+            y = @graph_top + @graph_height - coord.to_f * @increment_scaled
+          end
+
+          @d = @d.stroke(@additional_line_colors[i])
+          @d = @d.line(@graph_left, y, @graph_right, y)
+
+
+          @d.fill = @additional_line_colors[i]
+          @d.font = @font if @font
+          @d.stroke('transparent')
+          @d.pointsize = scale_fontsize(@marker_font_size)
+          @d.gravity = EastGravity
+          @d = @d.annotate_scaled( @base_image,
+                           100, 20,
+                           -10, y - (@marker_font_size/2.0),
+                           @additional_line_labels[i], @scale)
+          i += 1
+        end
+      end
+      # end draw additional lines
 
       @d = @d.stroke_antialias true
     end

diff --git a/test/output/TestLabelsForNullData.png b/test/output/TestLabelsForNullData.png
diff --git a/test/output/accum_bar.png b/test/output/accum_bar.png
diff --git a/test/output/area_keynote.png b/test/output/area_keynote.png
diff --git a/test/output/area_keynote_small.png b/test/output/area_keynote_small.png
diff --git a/test/output/area_many.png b/test/output/area_many.png
diff --git a/test/output/area_many_areas_small.png b/test/output/area_many_areas_small.png
diff --git a/test/output/area_tiny.png b/test/output/area_tiny.png
diff --git a/test/output/area_wide.png b/test/output/area_wide.png
diff --git a/test/output/bar2_wrapped_legend_16_400.png b/test/output/bar2_wrapped_legend_16_400.png
diff --git a/test/output/bar2_wrapped_legend_16_800.png b/test/output/bar2_wrapped_legend_16_800.png
diff --git a/test/output/bar2_wrapped_legend_30_400.png b/test/output/bar2_wrapped_legend_30_400.png
diff --git a/test/output/bar2_wrapped_legend_30_800.png b/test/output/bar2_wrapped_legend_30_800.png
diff --git a/test/output/bar2_wrapped_legend_4_400.png b/test/output/bar2_wrapped_legend_4_400.png
diff --git a/test/output/bar2_wrapped_legend_4_800.png b/test/output/bar2_wrapped_legend_4_800.png
diff --git a/test/output/bar2_wrapped_legend__400.png b/test/output/bar2_wrapped_legend__400.png
diff --git a/test/output/bar2_wrapped_legend__800.png b/test/output/bar2_wrapped_legend__800.png
diff --git a/test/output/bar_background_gradient_bottom_top.png b/test/output/bar_background_gradient_bottom_top.png
diff --git a/test/output/bar_background_gradient_left_right.png b/test/output/bar_background_gradient_left_right.png
diff --git a/test/output/bar_background_gradient_right_left.png b/test/output/bar_background_gradient_right_left.png
diff --git a/test/output/bar_background_gradient_top_bottom.png b/test/output/bar_background_gradient_top_bottom.png
diff --git a/test/output/bar_background_gradient_topleft_bottomright.png b/test/output/bar_background_gradient_topleft_bottomright.png
diff --git a/test/output/bar_background_gradient_topright_bottomleft.png b/test/output/bar_background_gradient_topright_bottomleft.png
diff --git a/test/output/bar_formatted_numbers.png b/test/output/bar_formatted_numbers.png
diff --git a/test/output/bar_keynote.png b/test/output/bar_keynote.png
diff --git a/test/output/bar_keynote_small.png b/test/output/bar_keynote_small.png
diff --git a/test/output/bar_long_legend_text.png b/test/output/bar_long_legend_text.png
diff --git a/test/output/bar_manual_colors.png b/test/output/bar_manual_colors.png
diff --git a/test/output/bar_marker_shadow.png b/test/output/bar_marker_shadow.png
diff --git a/test/output/bar_nearly_zero_max_10.png b/test/output/bar_nearly_zero_max_10.png
diff --git a/test/output/bar_no_legend.png b/test/output/bar_no_legend.png
diff --git a/test/output/bar_no_line_markers.png b/test/output/bar_no_line_markers.png
diff --git a/test/output/bar_no_title.png b/test/output/bar_no_title.png
diff --git a/test/output/bar_no_title_or_legend.png b/test/output/bar_no_title_or_legend.png
diff --git a/test/output/bar_object_labels.png b/test/output/bar_object_labels.png
diff --git a/test/output/bar_odeo.png b/test/output/bar_odeo.png
diff --git a/test/output/bar_one_value.png b/test/output/bar_one_value.png
diff --git a/test/output/bar_pos_neg.png b/test/output/bar_pos_neg.png
diff --git a/test/output/bar_rails_keynote.png b/test/output/bar_rails_keynote.png
diff --git a/test/output/bar_set_absolute_trunc.png b/test/output/bar_set_absolute_trunc.png
diff --git a/test/output/bar_set_label_stagger_height.png b/test/output/bar_set_label_stagger_height.png
diff --git a/test/output/bar_set_legend_box_size_lg.png b/test/output/bar_set_legend_box_size_lg.png
diff --git a/test/output/bar_set_legend_box_size_sm.png b/test/output/bar_set_legend_box_size_sm.png
diff --git a/test/output/bar_set_marker.png b/test/output/bar_set_marker.png
diff --git a/test/output/bar_set_trailing_dots_trunc.png b/test/output/bar_set_trailing_dots_trunc.png
diff --git a/test/output/bar_spacing_full.png b/test/output/bar_spacing_full.png
diff --git a/test/output/bar_spacing_half.png b/test/output/bar_spacing_half.png
diff --git a/test/output/bar_spacing_none.png b/test/output/bar_spacing_none.png
diff --git a/test/output/bar_tall_graph.png b/test/output/bar_tall_graph.png
diff --git a/test/output/bar_tall_graph_small.png b/test/output/bar_tall_graph_small.png
diff --git a/test/output/bar_themed.png b/test/output/bar_themed.png
diff --git a/test/output/bar_title_margin.png b/test/output/bar_title_margin.png
diff --git a/test/output/bar_value_labels.png b/test/output/bar_value_labels.png
diff --git a/test/output/bar_wide_graph.png b/test/output/bar_wide_graph.png
diff --git a/test/output/bar_wide_graph_small.png b/test/output/bar_wide_graph_small.png
diff --git a/test/output/bar_wrapped_legend_16_400.png b/test/output/bar_wrapped_legend_16_400.png
diff --git a/test/output/bar_wrapped_legend_16_800.png b/test/output/bar_wrapped_legend_16_800.png
diff --git a/test/output/bar_wrapped_legend_30_400.png b/test/output/bar_wrapped_legend_30_400.png
diff --git a/test/output/bar_wrapped_legend_30_800.png b/test/output/bar_wrapped_legend_30_800.png
diff --git a/test/output/bar_wrapped_legend_4_400.png b/test/output/bar_wrapped_legend_4_400.png
diff --git a/test/output/bar_wrapped_legend_4_800.png b/test/output/bar_wrapped_legend_4_800.png
diff --git a/test/output/bar_wrapped_legend__400.png b/test/output/bar_wrapped_legend__400.png
diff --git a/test/output/bar_wrapped_legend__800.png b/test/output/bar_wrapped_legend__800.png
diff --git a/test/output/bar_x_y_labels.png b/test/output/bar_x_y_labels.png
diff --git a/test/output/bar_y_increment_1.png b/test/output/bar_y_increment_1.png
diff --git a/test/output/bar_y_increment_2.0.png b/test/output/bar_y_increment_2.0.png
diff --git a/test/output/bar_y_increment_20.png b/test/output/bar_y_increment_20.png
diff --git a/test/output/bar_y_increment_5.png b/test/output/bar_y_increment_5.png
diff --git a/test/output/bar_zero_marker_count.png b/test/output/bar_zero_marker_count.png
diff --git a/test/output/bar_zero_spacing.png b/test/output/bar_zero_spacing.png
diff --git a/test/output/bezier.png b/test/output/bezier.png
diff --git a/test/output/bezier_2.png b/test/output/bezier_2.png
diff --git a/test/output/bezier_3.png b/test/output/bezier_3.png
diff --git a/test/output/bullet_greyscale.png b/test/output/bullet_greyscale.png
diff --git a/test/output/bullet_no_options.png b/test/output/bullet_no_options.png
diff --git a/test/output/dot.png b/test/output/dot.png
diff --git a/test/output/dot_manual_colors.png b/test/output/dot_manual_colors.png
diff --git a/test/output/dot_nearly_zero_max_10.png b/test/output/dot_nearly_zero_max_10.png
diff --git a/test/output/dot_no_legend.png b/test/output/dot_no_legend.png
diff --git a/test/output/dot_no_line_markers.png b/test/output/dot_no_line_markers.png
diff --git a/test/output/dot_no_title.png b/test/output/dot_no_title.png
diff --git a/test/output/dot_no_title_or_legend.png b/test/output/dot_no_title_or_legend.png
diff --git a/test/output/dot_one_value.png b/test/output/dot_one_value.png
diff --git a/test/output/dot_pos_neg.png b/test/output/dot_pos_neg.png
diff --git a/test/output/dot_set_legend_box_size_lg.png b/test/output/dot_set_legend_box_size_lg.png
diff --git a/test/output/dot_set_legend_box_size_sm.png b/test/output/dot_set_legend_box_size_sm.png
diff --git a/test/output/dot_set_marker.png b/test/output/dot_set_marker.png
diff --git a/test/output/dot_small.png b/test/output/dot_small.png
diff --git a/test/output/dot_tall_graph.png b/test/output/dot_tall_graph.png
diff --git a/test/output/dot_tall_graph_small.png b/test/output/dot_tall_graph_small.png
diff --git a/test/output/dot_themed.png b/test/output/dot_themed.png
diff --git a/test/output/dot_wide_graph.png b/test/output/dot_wide_graph.png
diff --git a/test/output/dot_wide_graph_small.png b/test/output/dot_wide_graph_small.png
diff --git a/test/output/dot_x_y_labels.png b/test/output/dot_x_y_labels.png
diff --git a/test/output/dot_y_increment_1.png b/test/output/dot_y_increment_1.png
diff --git a/test/output/dot_y_increment_2.0.png b/test/output/dot_y_increment_2.0.png
diff --git a/test/output/dot_y_increment_20.png b/test/output/dot_y_increment_20.png
diff --git a/test/output/dot_y_increment_5.png b/test/output/dot_y_increment_5.png
diff --git a/test/output/enhancements.png b/test/output/enhancements.png
diff --git a/test/output/enhancements_dot.png b/test/output/enhancements_dot.png
diff --git a/test/output/line_all_neg.png b/test/output/line_all_neg.png
diff --git a/test/output/line_all_neg_400.png b/test/output/line_all_neg_400.png
diff --git a/test/output/line_all_neg_no_max.png b/test/output/line_all_neg_no_max.png
diff --git a/test/output/line_baseline.png b/test/output/line_baseline.png
diff --git a/test/output/line_dot_style_square.png b/test/output/line_dot_style_square.png
diff --git a/test/output/line_hang_value.png b/test/output/line_hang_value.png
diff --git a/test/output/line_hide_dots.png b/test/output/line_hide_dots.png
diff --git a/test/output/line_hide_lines.png b/test/output/line_hide_lines.png
diff --git a/test/output/line_jruby_error.png b/test/output/line_jruby_error.png
diff --git a/test/output/line_large.png b/test/output/line_large.png
diff --git a/test/output/line_large_baseline.png b/test/output/line_large_baseline.png
diff --git a/test/output/line_legend_at_bottom.png b/test/output/line_legend_at_bottom.png
diff --git a/test/output/line_many.png b/test/output/line_many.png
diff --git a/test/output/line_many_lines_small.png b/test/output/line_many_lines_small.png
diff --git a/test/output/line_many_numbers.png b/test/output/line_many_numbers.png
diff --git a/test/output/line_marker_label_accuracy.png b/test/output/line_marker_label_accuracy.png
diff --git a/test/output/line_more_sets_than_colors.png b/test/output/line_more_sets_than_colors.png
diff --git a/test/output/line_no_data.png b/test/output/line_no_data.png
diff --git a/test/output/line_no_data_msg.png b/test/output/line_no_data_msg.png
diff --git a/test/output/line_no_data_other.png b/test/output/line_no_data_other.png
diff --git a/test/output/line_no_hide.png b/test/output/line_no_hide.png
diff --git a/test/output/line_no_legend.png b/test/output/line_no_legend.png
diff --git a/test/output/line_no_line_markers.png b/test/output/line_no_line_markers.png
diff --git a/test/output/line_no_title.png b/test/output/line_no_title.png
diff --git a/test/output/line_nothing_but_the_graph.png b/test/output/line_nothing_but_the_graph.png
diff --git a/test/output/line_one_value.png b/test/output/line_one_value.png
diff --git a/test/output/line_one_value_array.png b/test/output/line_one_value_array.png
diff --git a/test/output/line_pos_neg.png b/test/output/line_pos_neg.png
diff --git a/test/output/line_pos_neg_400.png b/test/output/line_pos_neg_400.png
diff --git a/test/output/line_reference_lines.png b/test/output/line_reference_lines.png
diff --git a/test/output/line_similar_high_end_values.png b/test/output/line_similar_high_end_values.png
diff --git a/test/output/line_similar_high_end_values_with_floor.png b/test/output/line_similar_high_end_values_with_floor.png
diff --git a/test/output/line_small_small_zero.png b/test/output/line_small_small_zero.png
diff --git a/test/output/line_small_values.png b/test/output/line_small_values.png
diff --git a/test/output/line_small_values_small.png b/test/output/line_small_values_small.png
diff --git a/test/output/line_small_zero.png b/test/output/line_small_zero.png
diff --git a/test/output/line_some_nil_points.png b/test/output/line_some_nil_points.png
diff --git a/test/output/line_theme_37signals_.png b/test/output/line_theme_37signals_.png
diff --git a/test/output/line_theme_37signals_400.png b/test/output/line_theme_37signals_400.png
diff --git a/test/output/line_theme_keynote_.png b/test/output/line_theme_keynote_.png
diff --git a/test/output/line_theme_keynote_400.png b/test/output/line_theme_keynote_400.png
diff --git a/test/output/line_theme_odeo_.png b/test/output/line_theme_odeo_.png
diff --git a/test/output/line_theme_odeo_400.png b/test/output/line_theme_odeo_400.png
diff --git a/test/output/line_theme_rails_keynote_.png b/test/output/line_theme_rails_keynote_.png
diff --git a/test/output/line_theme_rails_keynote_400.png b/test/output/line_theme_rails_keynote_400.png
diff --git a/test/output/line_tiny.png b/test/output/line_tiny.png
diff --git a/test/output/line_transparent.png b/test/output/line_transparent.png
diff --git a/test/output/line_very_small.png b/test/output/line_very_small.png
diff --git a/test/output/line_webp.webp b/test/output/line_webp.webp
diff --git a/test/output/line_wide_graph.png b/test/output/line_wide_graph.png
diff --git a/test/output/line_wide_graph_small.png b/test/output/line_wide_graph_small.png
diff --git a/test/output/line_xy.png b/test/output/line_xy.png
diff --git a/test/output/line_xy_pairs.png b/test/output/line_xy_pairs.png
diff --git a/test/output/line_y_axis_increment.png b/test/output/line_y_axis_increment.png
diff --git a/test/output/mini_bar.png b/test/output/mini_bar.png
diff --git a/test/output/mini_pie.png b/test/output/mini_pie.png
diff --git a/test/output/mini_pie_right_legend.png b/test/output/mini_pie_right_legend.png
diff --git a/test/output/mini_side_bar.png b/test/output/mini_side_bar.png
diff --git a/test/output/mini_side_bar_multi_color.png b/test/output/mini_side_bar_multi_color.png
diff --git a/test/output/net_dots_tiny.png b/test/output/net_dots_tiny.png
diff --git a/test/output/net_large.png b/test/output/net_large.png
diff --git a/test/output/net_many.png b/test/output/net_many.png
diff --git a/test/output/net_many_nets_small.png b/test/output/net_many_nets_small.png
diff --git a/test/output/net_no_data.png b/test/output/net_no_data.png
diff --git a/test/output/net_no_data_msg.png b/test/output/net_no_data_msg.png
diff --git a/test/output/net_no_data_other.png b/test/output/net_no_data_other.png
diff --git a/test/output/net_no_legend.png b/test/output/net_no_legend.png
diff --git a/test/output/net_no_net_markers.png b/test/output/net_no_net_markers.png
diff --git a/test/output/net_no_title.png b/test/output/net_no_title.png
diff --git a/test/output/net_nothing_but_the_graph.png b/test/output/net_nothing_but_the_graph.png
diff --git a/test/output/net_similar_high_end_values.png b/test/output/net_similar_high_end_values.png
diff --git a/test/output/net_small.png b/test/output/net_small.png
diff --git a/test/output/net_small_small.png b/test/output/net_small_small.png
diff --git a/test/output/net_small_small_zero.png b/test/output/net_small_small_zero.png
diff --git a/test/output/net_small_zero.png b/test/output/net_small_zero.png
diff --git a/test/output/net_wide_graph.png b/test/output/net_wide_graph.png
diff --git a/test/output/net_wide_graph_small.png b/test/output/net_wide_graph_small.png
diff --git a/test/output/pie_adjusted_text_offset_percentage.png b/test/output/pie_adjusted_text_offset_percentage.png
diff --git a/test/output/pie_equal.png b/test/output/pie_equal.png
diff --git a/test/output/pie_grey.png b/test/output/pie_grey.png
diff --git a/test/output/pie_keynote.png b/test/output/pie_keynote.png
diff --git a/test/output/pie_keynote_small.png b/test/output/pie_keynote_small.png
diff --git a/test/output/pie_legend.png b/test/output/pie_legend.png
diff --git a/test/output/pie_legend_small.png b/test/output/pie_legend_small.png
diff --git a/test/output/pie_nearly_equal.png b/test/output/pie_nearly_equal.png
diff --git a/test/output/pie_one_val.png b/test/output/pie_one_val.png
diff --git a/test/output/pie_pastel.png b/test/output/pie_pastel.png
diff --git a/test/output/pie_simple.png b/test/output/pie_simple.png
diff --git a/test/output/pie_subclass_custom_labels.png b/test/output/pie_subclass_custom_labels.png
diff --git a/test/output/pie_wide.png b/test/output/pie_wide.png
diff --git a/test/output/pie_wrapped_legend_16_400.png b/test/output/pie_wrapped_legend_16_400.png
diff --git a/test/output/pie_wrapped_legend_16_800.png b/test/output/pie_wrapped_legend_16_800.png
diff --git a/test/output/pie_wrapped_legend_30_400.png b/test/output/pie_wrapped_legend_30_400.png
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diff --git a/test/output/pie_wrapped_legend__800.png b/test/output/pie_wrapped_legend__800.png
diff --git a/test/output/pie_zero.png b/test/output/pie_zero.png
diff --git a/test/output/scatter_all_neg.png b/test/output/scatter_all_neg.png
diff --git a/test/output/scatter_all_neg_400.png b/test/output/scatter_all_neg_400.png
diff --git a/test/output/scatter_basic.png b/test/output/scatter_basic.png
diff --git a/test/output/scatter_custom_label_format.png b/test/output/scatter_custom_label_format.png
diff --git a/test/output/scatter_many.png b/test/output/scatter_many.png
diff --git a/test/output/scatter_no_data.png b/test/output/scatter_no_data.png
diff --git a/test/output/scatter_no_data_msg.png b/test/output/scatter_no_data_msg.png
diff --git a/test/output/scatter_no_data_other.png b/test/output/scatter_no_data_other.png
diff --git a/test/output/scatter_no_hide.png b/test/output/scatter_no_hide.png
diff --git a/test/output/scatter_no_labels.png b/test/output/scatter_no_labels.png
diff --git a/test/output/scatter_no_legend.png b/test/output/scatter_no_legend.png
diff --git a/test/output/scatter_no_line_markers.png b/test/output/scatter_no_line_markers.png
diff --git a/test/output/scatter_no_title.png b/test/output/scatter_no_title.png
diff --git a/test/output/scatter_nothing_but_the_graph.png b/test/output/scatter_nothing_but_the_graph.png
diff --git a/test/output/scatter_pos_neg.png b/test/output/scatter_pos_neg.png
diff --git a/test/output/scatter_pos_neg_400.png b/test/output/scatter_pos_neg_400.png
diff --git a/test/output/scatter_wide_graph.png b/test/output/scatter_wide_graph.png
diff --git a/test/output/scatter_wide_graph_small.png b/test/output/scatter_wide_graph_small.png
diff --git a/test/output/scene_hazy_night.png b/test/output/scene_hazy_night.png
diff --git a/test/output/scene_not_hazy_day.png b/test/output/scene_not_hazy_day.png
diff --git a/test/output/scene_partly_cloudy_day.png b/test/output/scene_partly_cloudy_day.png
diff --git a/test/output/scene_stormy_day.png b/test/output/scene_stormy_day.png
diff --git a/test/output/scene_stormy_night.png b/test/output/scene_stormy_night.png
diff --git a/test/output/side_bar.png b/test/output/side_bar.png
diff --git a/test/output/side_bar_data_range.png b/test/output/side_bar_data_range.png
diff --git a/test/output/side_bar_labels.png b/test/output/side_bar_labels.png
diff --git a/test/output/side_bar_spacing_full.png b/test/output/side_bar_spacing_full.png
diff --git a/test/output/side_bar_spacing_half.png b/test/output/side_bar_spacing_half.png
diff --git a/test/output/side_bar_spacing_none.png b/test/output/side_bar_spacing_none.png
diff --git a/test/output/side_stacked_bar_keynote.png b/test/output/side_stacked_bar_keynote.png
diff --git a/test/output/side_stacked_bar_keynote_small.png b/test/output/side_stacked_bar_keynote_small.png
diff --git a/test/output/side_stacked_bar_labels.png b/test/output/side_stacked_bar_labels.png
diff --git a/test/output/side_stacked_bar_long_label.png b/test/output/side_stacked_bar_long_label.png
diff --git a/test/output/side_stacked_bar_wide.png b/test/output/side_stacked_bar_wide.png
diff --git a/test/output/spider_37signals.png b/test/output/spider_37signals.png
diff --git a/test/output/spider_equal.png b/test/output/spider_equal.png
diff --git a/test/output/spider_keynote.png b/test/output/spider_keynote.png
diff --git a/test/output/spider_legend.png b/test/output/spider_legend.png
diff --git a/test/output/spider_legend_small.png b/test/output/spider_legend_small.png
diff --git a/test/output/spider_lots_of_data.png b/test/output/spider_lots_of_data.png
diff --git a/test/output/spider_lots_of_data_normal_names.png b/test/output/spider_lots_of_data_normal_names.png
diff --git a/test/output/spider_nearly_equal.png b/test/output/spider_nearly_equal.png
diff --git a/test/output/spider_no_axes.png b/test/output/spider_no_axes.png
diff --git a/test/output/spider_no_background.png b/test/output/spider_no_background.png
diff --git a/test/output/spider_no_print.png b/test/output/spider_no_print.png
diff --git a/test/output/spider_overlay_1.png b/test/output/spider_overlay_1.png
diff --git a/test/output/spider_overlay_2.png b/test/output/spider_overlay_2.png
diff --git a/test/output/spider_rotation.png b/test/output/spider_rotation.png
diff --git a/test/output/spider_small.png b/test/output/spider_small.png
diff --git a/test/output/spider_wide.png b/test/output/spider_wide.png
diff --git a/test/output/spider_zero.png b/test/output/spider_zero.png
diff --git a/test/output/stacked_area_keynote.png b/test/output/stacked_area_keynote.png
diff --git a/test/output/stacked_area_keynote_small.png b/test/output/stacked_area_keynote_small.png
diff --git a/test/output/stacked_bar_keynote.png b/test/output/stacked_bar_keynote.png
diff --git a/test/output/stacked_bar_keynote_no_space.png b/test/output/stacked_bar_keynote_no_space.png
diff --git a/test/output/stacked_bar_keynote_small.png b/test/output/stacked_bar_keynote_small.png
diff --git a/test/test_scatter.rb b/test/test_scatter.rb
@@ -59,7 +59,9 @@ def test_custom_label_format
       DateTime.strptime(value.to_i.to_s,'%s').strftime('%d.%m.%Y')
     end
     g.y_axis_increment = 1
-
+    g.additional_line_values = Array[7, 14, 14.5]
+    g.additional_line_labels = Array['50%', '85%', '95%']
+    g.additional_line_colors = Array['#ff6600', '#f66230', '#ff0000']
     # Fake data (100 days, random times of day between 5 and 16)
     r = Random.new(269155)
     y_values = (0..100).map { 5 + r.rand(12) }