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require 'date'
require 'ostruct'
require 'rexml/document'
require 'rexml/formatters/default'
require 'pp'
require 'rubyvis/internals'
require 'rubyvis/vector'
require 'rubyvis/sceneelement'
require 'rubyvis/property'
require 'rubyvis/nest'
require 'rubyvis/flatten'
require 'rubyvis/javascript_behaviour'
require 'rubyvis/format'
require 'rubyvis/mark'
require 'rubyvis/scale'
require 'rubyvis/histogram'
require 'rubyvis/color/color'
require 'rubyvis/color/colors'
require 'rubyvis/layout'
require 'rubyvis/dom'
require 'rubyvis/scene/svg_scene'
require 'rubyvis/transform'
require 'rubyvis/mark/shorcut_methods'
# = Rubyvis
# Ruby port of Protovis
#
module Rubyvis
@@nokogiri=nil
# Rubyvis version
VERSION = '0.6.1'
# Protovis API on which current Rubyvis is based
PROTOVIS_API_VERSION='3.3'
# You actually can do it! http://snipplr.com/view/2137/uses-for-infinity-in-ruby/
Infinity=1.0 / 0
#
# :section: basic methods
#
# Returns the passed-in argument, +x+; the identity function. This method
# is provided for convenience since it is used as the default behavior for a
# number of property functions.
#
# @param [Object] x, a value.
# @return [Object] the value +x+.
def self.identity
lambda {|x,*args| x}
end
def self.has_nokogiri?
if @@nokogiri.nil?
begin
require 'nokogiri'
@@nokogiri=true
rescue LoadError
@@nokogiri=false
end
end
@@nokogiri
end
def self.xml_engine
if has_nokogiri? and !$rubyvis_no_nokogiri
:nokogiri
else
:rexml
end
end
def self.nokogiri_document(v=nil)
if !v.nil?
@@nokogiri_document=v
end
@@nokogiri_document
end
# Returns <tt>self.index</tt>. This method is provided for convenience for use
# with scales. For example, to color bars by their index, say:
#
# <pre>.fill_style(Rubyvis::Colors.category10().by(Rubyvis.index))</pre>
#
# This method is equivalent to <tt>lambda {self.index}</tt>, but more
# succinct. Note that the <tt>index</tt> property is also supported for
# accessor functions with {@link Rubyvis.max}, {@link Rubyvis.min} and other array
# utility methods.
#
# @see Rubyvis::Scale
# @see Rubyvis::Mark#index
def self.index
lambda {|*args| self.index}
end
def self.child
lambda {|*args| self.child_index}
end
def self.parent
lambda {|*args| self.parent.index}
end
end
# Alias for Rubyvis module
# @return [Module] Rubyvis module
def pv
Rubyvis
end
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