Module: R::SVG

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

Class Method Summary collapse

Class Method Details

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



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# File 'lib/rbbt/util/R/plot.rb', line 105

def self.ggplot(data, script = nil, width = nil, height = nil, options = {})
  width ||= 2
  height ||= 2
  values = []

  options = options.dup

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

  entity_geom = options.delete :entity_geom

  field_classes = options[:field_classes]

  fast = options[:fast]

  if fast
    save_method = "rbbt.SVG.save.fast"
  else
    save_method = "rbbt.SVG.save"
  end

  if data

    field_classes = R.field_classes(data) if field_classes.nil?

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

    TmpFile.with_file nil, true, :extension => 'svg' do |tmpfile|

      if entity_geom
        data.R <<-EOF, sources, options
  plot = { #{script} }
  #{save_method}('#{tmpfile}', plot, width = #{R.ruby2R width}, height = #{R.ruby2R height}, entity.geom=#{R.ruby2R(entity_geom)}, data=data)
  data = NULL
        EOF
      else
        data.R <<-EOF, sources, options
  plot = { #{script} }

  #{save_method}('#{tmpfile}', plot, width = #{R.ruby2R width}, height = #{R.ruby2R height})
  data = NULL
        EOF
      end

      Open.read(tmpfile).gsub(/(glyph\d+-\d+)/, '\1-' + File.basename(tmpfile))
    end
  else

    TmpFile.with_file nil, true, :extension => 'svg' do |tmpfile|
      R.run <<-EOF, sources, options
  plot = { #{script} }

  #{save_method}('#{tmpfile}', plot, width = #{R.ruby2R width}, height = #{R.ruby2R height})
  data = NULL
      EOF
      Open.read(tmpfile).gsub(/(glyph\d+-\d+)/, '\1-' + File.basename(tmpfile))
    end
  end
end

.ggplotSVG(*args) ⇒ Object 



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# File 'lib/rbbt/util/R/plot.rb', line 101

def self.ggplotSVG(*args)
  ggplot(*args)
end

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



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# File 'lib/rbbt/util/R/plot.rb', line 40

def self.plot(filename, data = nil, script = nil, width = nil, height = nil, options = {}, &block)
  width ||= 600
  height ||= 600
  values = []

  script ||= ""
  if block_given?
    s = StringIO.new
    class << s
      def method_missing(name, *args)
        name = name.to_s
        if name[-1] == '='
          arg = args.first
          value = if String === arg
                    arg
                  else
                    R.ruby2R arg
                  end
          add("" << name[0..-2] << "=" << value)
        else
          args_strs = []
          args.each do |arg|
            value = if String === arg
                      arg
                    else
                      R.ruby2R arg
                    end
            args_strs << value
          end
          add("" << name << "(" << args_strs * ", " << ")")
        end
      end

      def add(line)
        self.write line << "\n"
      end
    end
    block.call(s)
    s.rewind
    script << "\n" << s.read
  end
  sources = [:plot, options[:source]].flatten.compact

  field_classes = options[:field_classes]

  if data
    field_classes = R.field_classes(data) if field_classes.nil?

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

    data.R <<-EOF, :plot, options
  rbbt.svg_plot("#{ filename }", width=#{ width }, height = #{ height }, function(){ #{script} })
  data = NULL
    EOF
  else
    R.run <<-EOF, :plot, options
  rbbt.svg_plot("#{ filename }", width=#{ width }, height = #{ height }, function(){ #{script} })
    EOF
  end
end