Class: Gruff::Pie

Inherits:
Base
  • Object
show all
Defined in:
lib/gruff/pie.rb

Overview

Here's how to make a Gruff::Pie.

g = Gruff::Pie.new
g.title = "Visual Pie Graph Test"
g.data 'Fries', 20
g.data 'Hamburgers', 50
g.write("pie_keynote.png")

To control where the pie chart starts creating slices, use #start_degree=.

Direct Known Subclasses

Mini::Pie

Constant Summary collapse

DEFAULT_TEXT_OFFSET_PERCENTAGE =
0.1

Constants inherited from Base

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

Instance Attribute Summary collapse

Attributes inherited from Base

#bottom_margin, #colors, #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_margin, #marker_color, #marker_shadow_color, #maximum_value, #minimum_value, #no_data_message, #right_margin, #sort, #sorted_drawing, #title, #title_margin, #top_margin, #x_axis_increment, #x_axis_label_format, #y_axis_increment, #y_axis_label_format

Instance Method Summary collapse

Methods inherited from Base

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

Constructor Details

This class inherits a constructor from Gruff::Base

Instance Attribute Details

#hide_labels_less_than=(value) ⇒ Object (writeonly)

Do not show labels for slices that are less than this percent. Use 0 to always show all labels. Defaults to 0.


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# File 'lib/gruff/pie.rb', line 26

def hide_labels_less_than=(value)
  @hide_labels_less_than = value
end

#label_formatting=(value) ⇒ Object (writeonly)

Set the number output format lambda.


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# File 'lib/gruff/pie.rb', line 22

def label_formatting=(value)
  @label_formatting = value
end

#show_values_as_labels=(value) ⇒ Object (writeonly)

Use values instead of percentages.


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# File 'lib/gruff/pie.rb', line 33

def show_values_as_labels=(value)
  @show_values_as_labels = value
end

#sort=(value) ⇒ Object (writeonly)

Set to true if you want the data sets sorted with largest avg values drawn first. Default is true.


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# File 'lib/gruff/pie.rb', line 37

def sort=(value)
  @sort = value
end

#start_degree=(value) ⇒ Object (writeonly)

Can be used to make the pie start cutting slices at the top (-90.0) or at another angle. Default is -90.0, which starts at 3 o'clock.


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# File 'lib/gruff/pie.rb', line 19

def start_degree=(value)
  @start_degree = value
end

#text_offset_percentage=(value) ⇒ Object (writeonly)

Affect the distance between the percentages and the pie chart. Defaults to 0.1.


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# File 'lib/gruff/pie.rb', line 30

def text_offset_percentage=(value)
  @text_offset_percentage = value
end

Instance Method Details

#zero_degree=(value) ⇒ Object

Deprecated.

Please use start_degree attribute instead.

Can be used to make the pie start cutting slices at the top (-90.0) or at another angle. Default is -90.0, which starts at 3 o'clock.


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# File 'lib/gruff/pie.rb', line 42

def zero_degree=(value)
  warn '#zero_degree= is deprecated. Please use `start_degree` attribute instead'
  @start_degree = value
end