Module: R::PNG

Defined in:
lib/rbbt/util/R/plot.rb

Class Method Summary collapse

Class Method Details

.ggplotPNG(filename, data, script = nil, width = nil, height = nil, options = {}) ⇒ Object 



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# File 'lib/rbbt/util/R/plot.rb', line 82

def self.ggplotPNG(filename, data, script = nil, width = nil, height = nil, options = {})
  width ||= 3
  height ||= 3
  values = []

  sources = [:plot, options[:source]].flatten.compact

  data.each do |k,v|
    v = Array === v ? v : [v]
    next if v == "NA" or v.nil? or v.include? "NA" or v.include? nil
    values = v
    break
  end
  values = [values] unless Array === values
  field_classes = values.collect do |v| 
    case v
    when FalseClass, TrueClass
      "'logical'"
    when Fixnum, Float
      "'numeric'"
    when String
      if v.strip =~ /^[-+]?[\d\.]+$/
        "'numeric'"
      else
        "'character'"
      end
    when Symbol
      "'factor'"
    else
      ":NA"
    end
  end
  options[:R_open] ||= "colClasses=c('character'," + field_classes * ", " + ')'

  data.R "plot = { \#{script} }\n\nggsave('\#{filename}', plot, width = \#{R.ruby2R width}, height = \#{R.ruby2R height})\ndata = NULL\n  EOF\nend\n", :plot, options

.plot(filename, data, script = nil, width = nil, height = nil, options = {}) ⇒ Object 



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# File 'lib/rbbt/util/R/plot.rb', line 124

def self.plot(filename, data, script = nil, width = nil, height = nil, options = {})
  width ||= 200
  height ||= 200
  values = []

  sources = [:plot, options[:source]].flatten.compact

  data.each do |k,v|
    v = Array === v ? v : [v]
    next if v == "NA" or v.nil? or v.include? "NA" or v.include? nil
    values = v
    break
  end

  values = [values] unless Array === values

  field_classes = values.collect do |v| 
    case v
    when FalseClass, TrueClass
      "'logical'"
    when Fixnum, Float
      "'numeric'"
    when String
      if v.strip =~ /^[-+]?[\d\.]+$/
        "'numeric'"
      else
        "'character'"
      end
    when Symbol
      "'factor'"
    else
      ":NA"
    end
  end

  options[:R_open] ||= "colClasses=c('character'," + field_classes * ", " + ')' if field_classes.any?

  data.R "png(\"\#{ filename }\", \#{ width }, \#{ height })\n{ \#{script} }\ndev.off()\ndata = NULL\n  EOF\nend\n", :plot, options