Class: Gruff::SideStackedBar

Inherits:
SideBar show all
Includes:
BarValueLabelMixin, StackedMixin
Defined in:
lib/gruff/side_stacked_bar.rb

Overview

New gruff graph type added to enable sideways stacking bar charts (basically looks like a x/y flip of a standard stacking bar chart)

Here’s how to set up a Gruff::SideStackedBar.

g = Gruff::SideStackedBar.new
g.title = 'SideStackedBar Graph'
g.labels = {
  0 => '5/6',
  1 => '5/15',
  2 => '5/24',
  3 => '5/30',
}
g.data :Art, [0, 5, 8, 15]
g.data :Philosophy, [10, 3, 2, 8]
g.data :Science, [2, 15, 8, 11]
g.write('side_stacked_bar.png')

Constant Summary

Constants inherited from Base

Base::DEFAULT_MARGIN, Base::DEFAULT_TARGET_WIDTH, Base::LABEL_MARGIN, Base::LEGEND_MARGIN

Instance Attribute Summary collapse

Attributes inherited from SideBar

#bar_spacing, #group_spacing, #hide_labels, #label_formatting, #show_labels_for_bar_values

Attributes inherited from Base

#bold_title, #bottom_margin, #center_labels_over_point, #colors, #font_color, #has_left_labels, #hide_legend, #hide_line_markers, #hide_line_numbers, #hide_title, #label_max_size, #label_stagger_height, #label_truncation_style, #labels, #left_margin, #legend_at_bottom, #legend_box_size, #legend_font_size, #legend_margin, #marker_color, #marker_font_size, #marker_shadow_color, #maximum_value, #minimum_value, #no_data_message, #right_margin, #sort, #sorted_drawing, #title, #title_font, #title_font_size, #title_margin, #top_margin, #use_data_label, #x_axis_increment, #x_axis_label, #y_axis_increment, #y_axis_label

Instance Method Summary collapse

Methods inherited from Base

#add_color, #data, #font=, #initialize, #margins=, #replace_colors, #theme=, #theme_37signals, #theme_greyscale, #theme_keynote, #theme_odeo, #theme_pastel, #theme_rails_keynote, #to_blob, #to_image, #write

Constructor Details

This class inherits a constructor from Gruff::Base

Instance Attribute Details

#bar_spacing=(value) ⇒ Object (writeonly)

Spacing factor applied between bars.



27
28
29
 
# File 'lib/gruff/side_stacked_bar.rb', line 27

def bar_spacing=(value)
  @bar_spacing = value
end

#hide_labels=(value) ⇒ Object (writeonly)

Prevent drawing of column labels left of a side stacked bar graph. Default is false.



41
42
43
 
# File 'lib/gruff/side_stacked_bar.rb', line 41

def hide_labels=(value)
  @hide_labels = value
end

#label_formatting=(value) ⇒ Object (writeonly)

Set the number output format for labels using sprintf. Default is “%.2f”.



34
35
36
 
# File 'lib/gruff/side_stacked_bar.rb', line 34

def label_formatting=(value)
  @label_formatting = value
end

#segment_spacing=(value) ⇒ Object (writeonly)

Number of pixels between bar segments.



30
31
32
 
# File 'lib/gruff/side_stacked_bar.rb', line 30

def segment_spacing=(value)
  @segment_spacing = value
end

#show_labels_for_bar_values=(value) ⇒ Object (writeonly)

Output the values for the bars on a bar graph. Default is false.



38
39
40
 
# File 'lib/gruff/side_stacked_bar.rb', line 38

def show_labels_for_bar_values=(value)
  @show_labels_for_bar_values = value
end

Instance Method Details

#draw ⇒ Object 



53
54
55
56
57
 
# File 'lib/gruff/side_stacked_bar.rb', line 53

def draw
  @has_left_labels = true
  calculate_maximum_by_stack
  super
end