make_datapoint_text (SVG::Graph::Graph)

    # File temp/Graph/Graph.rb, line 499
          def make_datapoint_text( x, y, value, style="" )
            if show_data_values
              @foreground.add_element( "text", {
                "x" => x.to_s,
                "y" => y.to_s,
                "class" => "dataPointLabel",
                "style" => "#{style} stroke: #fff; stroke-width: 2;"
              }).text = value.to_s
              text = @foreground.add_element( "text", {
                "x" => x.to_s,
                "y" => y.to_s,
                "class" => "dataPointLabel"
              })
              text.text = value.to_s
              text.attributes["style"] = style if style.length > 0
            end
          end