nv.models.line = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0},
      width = 960,
      height = 500,
      color = d3.scale.category20().range(), // array of colors to be used in order
      id = Math.floor(Math.random() * 10000), //Create semi-unique ID incase user doesn't select one
      getX = function(d) { return d.x }, // accessor to get the x value from a data point
      getY = function(d) { return d.y }, // accessor to get the y value from a data point
      defined = function(d,i) { return !isNaN(getY(d,i)) && getY(d,i) !== null }, // allows a line to be not continous when it is not defined
      isArea = function(d) { return d.area }, // decides if a line is an area or just a line
      clipEdge = false, // if true, masks lines within x and y scale
      x, y, //can be accessed via chart.scatter.[x/y]Scale()
      interpolate = "linear"; // controls the line interpolation


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var scatter = nv.models.scatter()
                  .id(id)
                  .size(16) // default size
                  .sizeDomain([16,256]), //set to speed up calculation, needs to be unset if there is a cstom size accessor
      x0, y0,
      timeoutID;


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);

      x = scatter.xScale();
      y = scatter.yScale();

      x0 = x0 || x;
      y0 = y0 || y;


      var wrap = container.selectAll('g.wrap.line').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'wrap nvd3 line');
      var defsEnter = wrapEnter.append('defs');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g')

      gEnter.append('g').attr('class', 'groups');
      gEnter.append('g').attr('class', 'scatterWrap');

      var scatterWrap = wrap.select('.scatterWrap');//.datum(data);


      scatter
        .width(availableWidth)
        .height(availableHeight)

      d3.transition(scatterWrap).call(scatter);



      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      defsEnter.append('clipPath')
          .attr('id', 'edge-clip-' + id)
        .append('rect');

      wrap.select('#edge-clip-' + id + ' rect')
          .attr('width', availableWidth)
          .attr('height', availableHeight);

      g   .attr('clip-path', clipEdge ? 'url(#edge-clip-' + id + ')' : '');
      scatterWrap
          .attr('clip-path', clipEdge ? 'url(#edge-clip-' + id + ')' : '');




      var groups = wrap.select('.groups').selectAll('.group')
          .data(function(d) { return d }, function(d) { return d.key });
      groups.enter().append('g')
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6);
      d3.transition(groups.exit())
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6)
          .remove();
      groups
          .attr('class', function(d,i) { return 'group series-' + i })
          .classed('hover', function(d) { return d.hover })
          .style('fill', function(d,i){ return color[i % color.length] })
          .style('stroke', function(d,i){ return color[i % color.length] });
      d3.transition(groups)
          .style('stroke-opacity', 1)
          .style('fill-opacity', .5);



      var areaPaths = groups.selectAll('path.area')
          .data(function(d) { return [d] }); // this is done differently than lines because I need to check if series is an area
      areaPaths.enter().append('path')
          .filter(isArea)
          .attr('class', 'area')
          .attr('d', function(d) {
            return d3.svg.area()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x0(getX(d,i)) })
                .y0(function(d,i) { return y0(getY(d,i)) })
                .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                .apply(this, [d.values])
          });
      d3.transition(groups.exit().selectAll('path.area'))
          .attr('d', function(d) {
            return d3.svg.area()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x0(getX(d,i)) })
                .y0(function(d,i) { return y0(getY(d,i)) })
                .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                .apply(this, [d.values])
          });
      d3.transition(areaPaths.filter(isArea))
          .attr('d', function(d) {
            return d3.svg.area()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x0(getX(d,i)) })
                .y0(function(d,i) { return y0(getY(d,i)) })
                .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                .apply(this, [d.values])
          });



      var linePaths = groups.selectAll('path.line')
          .data(function(d) { return [d.values] });
      linePaths.enter().append('path')
          .attr('class', function(d) { return 'line' })
          .attr('d',
            d3.svg.line()
              .interpolate(interpolate)
              .defined(defined)
              .x(function(d,i) { return x0(getX(d,i)) })
              .y(function(d,i) { return y0(getY(d,i)) })
          );
      d3.transition(groups.exit().selectAll('path.line'))
          .attr('d',
            d3.svg.line()
              .interpolate(interpolate)
              .defined(defined)
              .x(function(d,i) { return x(getX(d,i)) })
              .y(function(d,i) { return y(getY(d,i)) })
          );
      d3.transition(linePaths)
          .attr('d',
            d3.svg.line()
              .interpolate(interpolate)
              .defined(defined)
              .x(function(d,i) { return x(getX(d,i)) })
              .y(function(d,i) { return y(getY(d,i)) })
          );



      //store old scales for use in transitions on update
      x0 = x.copy();
      y0 = y.copy();

    });

    return chart;
  }


  //============================================================
  // Global getters and setters
  //------------------------------------------------------------

  chart.dispatch = scatter.dispatch;

  d3.rebind(chart, scatter, 'interactive', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin = _;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    scatter.x(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    scatter.y(_);
    return chart;
  };

  chart.clipEdge = function(_) {
    if (!arguments.length) return clipEdge;
    clipEdge = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = _;
    scatter.color(_);
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  chart.interpolate = function(_) {
    if (!arguments.length) return interpolate;
    interpolate = _;
    return chart;
  };

  chart.defined = function(_) {
    if (!arguments.length) return defined;
    defined = _;
    return chart;
  };

  chart.isArea = function(_) {
    if (!arguments.length) return isArea;
    isArea = d3.functor(_);
    return chart;
  };

  return chart;
}