--- /dev/null
+
+nv.models.line = function() {
+ "use strict";
+ //============================================================
+ // Public Variables with Default Settings
+ //------------------------------------------------------------
+
+ var scatter = nv.models.scatter()
+ ;
+
+ var margin = {top: 0, right: 0, bottom: 0, left: 0}
+ , width = 960
+ , height = 500
+ , color = nv.utils.defaultColor() // a function that returns a color
+ , 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 continuous 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 //can be accessed via chart.xScale()
+ , y //can be accessed via chart.yScale()
+ , interpolate = "linear" // controls the line interpolation
+ ;
+
+ scatter
+ .size(16) // default size
+ .sizeDomain([16,256]) //set to speed up calculation, needs to be unset if there is a custom size accessor
+ ;
+
+ //============================================================
+
+
+ //============================================================
+ // Private Variables
+ //------------------------------------------------------------
+
+ var x0, y0 //used to store previous scales
+ ;
+
+ //============================================================
+
+
+ function chart(selection) {
+ selection.each(function(data) {
+ var availableWidth = width - margin.left - margin.right,
+ availableHeight = height - margin.top - margin.bottom,
+ container = d3.select(this);
+
+ //------------------------------------------------------------
+ // Setup Scales
+
+ x = scatter.xScale();
+ y = scatter.yScale();
+
+ x0 = x0 || x;
+ y0 = y0 || y;
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup containers and skeleton of chart
+
+ var wrap = container.selectAll('g.nv-wrap.nv-line').data([data]);
+ var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-line');
+ var defsEnter = wrapEnter.append('defs');
+ var gEnter = wrapEnter.append('g');
+ var g = wrap.select('g')
+
+ gEnter.append('g').attr('class', 'nv-groups');
+ gEnter.append('g').attr('class', 'nv-scatterWrap');
+
+ wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
+
+ //------------------------------------------------------------
+
+
+
+
+ scatter
+ .width(availableWidth)
+ .height(availableHeight)
+
+ var scatterWrap = wrap.select('.nv-scatterWrap');
+ //.datum(data); // Data automatically trickles down from the wrap
+
+ scatterWrap.transition().call(scatter);
+
+
+
+ defsEnter.append('clipPath')
+ .attr('id', 'nv-edge-clip-' + scatter.id())
+ .append('rect');
+
+ wrap.select('#nv-edge-clip-' + scatter.id() + ' rect')
+ .attr('width', availableWidth)
+ .attr('height', availableHeight);
+
+ g .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + scatter.id() + ')' : '');
+ scatterWrap
+ .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + scatter.id() + ')' : '');
+
+
+
+
+ var groups = wrap.select('.nv-groups').selectAll('.nv-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);
+ groups.exit()
+ .transition()
+ .style('stroke-opacity', 1e-6)
+ .style('fill-opacity', 1e-6)
+ .remove();
+ groups
+ .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
+ .classed('hover', function(d) { return d.hover })
+ .style('fill', function(d,i){ return color(d, i) })
+ .style('stroke', function(d,i){ return color(d, i)});
+ groups
+ .transition()
+ .style('stroke-opacity', 1)
+ .style('fill-opacity', .5);
+
+
+
+ var areaPaths = groups.selectAll('path.nv-area')
+ .data(function(d) { return isArea(d) ? [d] : [] }); // this is done differently than lines because I need to check if series is an area
+ areaPaths.enter().append('path')
+ .attr('class', 'nv-area')
+ .attr('d', function(d) {
+ return d3.svg.area()
+ .interpolate(interpolate)
+ .defined(defined)
+ .x(function(d,i) { return nv.utils.NaNtoZero(x0(getX(d,i))) })
+ .y0(function(d,i) { return nv.utils.NaNtoZero(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])
+ });
+ groups.exit().selectAll('path.nv-area')
+ .remove();
+
+ areaPaths
+ .transition()
+ .attr('d', function(d) {
+ return d3.svg.area()
+ .interpolate(interpolate)
+ .defined(defined)
+ .x(function(d,i) { return nv.utils.NaNtoZero(x(getX(d,i))) })
+ .y0(function(d,i) { return nv.utils.NaNtoZero(y(getY(d,i))) })
+ .y1(function(d,i) { return y( 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.nv-line')
+ .data(function(d) { return [d.values] });
+ linePaths.enter().append('path')
+ .attr('class', 'nv-line')
+ .attr('d',
+ d3.svg.line()
+ .interpolate(interpolate)
+ .defined(defined)
+ .x(function(d,i) { return nv.utils.NaNtoZero(x0(getX(d,i))) })
+ .y(function(d,i) { return nv.utils.NaNtoZero(y0(getY(d,i))) })
+ );
+ groups.exit().selectAll('path.nv-line')
+ .transition()
+ .attr('d',
+ d3.svg.line()
+ .interpolate(interpolate)
+ .defined(defined)
+ .x(function(d,i) { return nv.utils.NaNtoZero(x(getX(d,i))) })
+ .y(function(d,i) { return nv.utils.NaNtoZero(y(getY(d,i))) })
+ );
+ linePaths
+ .transition()
+ .attr('d',
+ d3.svg.line()
+ .interpolate(interpolate)
+ .defined(defined)
+ .x(function(d,i) { return nv.utils.NaNtoZero(x(getX(d,i))) })
+ .y(function(d,i) { return nv.utils.NaNtoZero(y(getY(d,i))) })
+ );
+
+
+
+ //store old scales for use in transitions on update
+ x0 = x.copy();
+ y0 = y.copy();
+
+ });
+
+ return chart;
+ }
+
+
+ //============================================================
+ // Expose Public Variables
+ //------------------------------------------------------------
+
+ chart.dispatch = scatter.dispatch;
+ chart.scatter = scatter;
+
+ d3.rebind(chart, scatter, 'id', 'interactive', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'xRange', 'yRange',
+ 'sizeDomain', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'useVoronoi', 'clipRadius', 'padData','highlightPoint','clearHighlights');
+
+ chart.options = nv.utils.optionsFunc.bind(chart);
+
+ chart.margin = function(_) {
+ if (!arguments.length) return margin;
+ margin.top = typeof _.top != 'undefined' ? _.top : margin.top;
+ margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
+ margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
+ margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
+ 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 = nv.utils.getColor(_);
+ scatter.color(color);
+ 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;
+}
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