Class: Gruff::Dot

Inherits:

Base

• Object
• Base
• Gruff::Dot

Defined in:

lib/gruff/dot.rb

Overview

Graph with dots and labels along a vertical access. see: ‘Creating More Effective Graphs’ by Robbins

Here’s how to set up a Gruff::Dot.

g = Gruff::Dot.new
g.title = 'Dot Graph'
g.data :Art, [0, 5, 8, 15]
g.data :Philosophy, [10, 3, 2, 8]
g.data :Science, [2, 15, 8, 11]
g.write('dot.png')

Constant Summary

Constants inherited from Base

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

Instance Attribute Summary

• #hide_labels ⇒ Object writeonly

  Prevent drawing of column labels below a stacked bar graph.

Attributes inherited from Base

#bottom_margin, #colors, #hide_legend, #hide_line_markers, #hide_line_numbers, #hide_title, #label_margin, #label_max_size, #label_truncation_style, #left_margin, #legend_at_bottom, #legend_box_size, #legend_margin, #marker_color, #marker_shadow_color, #maximum_value, #minimum_value, #no_data_message, #right_margin, #sort, #sorted_drawing, #title_margin, #top_margin, #x_axis_increment, #x_axis_label_format, #y_axis_increment, #y_axis_label_format

Instance Method Summary

• #initialize ⇒ Dot constructor

  A new instance of Dot.

Methods inherited from Base

#add_color, #bold_title=, #data, #draw, #font=, #font_color=, #label_rotation=, #label_stagger_height=, #labels=, #legend_font_size=, #margins=, #marker_font_size=, #replace_colors, #theme=, #theme_37signals, #theme_greyscale, #theme_keynote, #theme_odeo, #theme_pastel, #theme_rails_keynote, #title=, #title_font=, #title_font_size=, #to_blob, #to_image, #transparent_background=, #write

Constructor Details

#initialize ⇒ Dot

Returns a new instance of Dot.

# File 'lib/gruff/dot.rb', line 20

def initialize(*)
  super
  @has_left_labels = true
  @dot_style = 'circle'
end

Instance Attribute Details

#hide_labels=(value) ⇒ Object (writeonly)

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

# File 'lib/gruff/dot.rb', line 18

def hide_labels=(value)
  @hide_labels = value
end