--- /dev/null
+//TODO: consider deprecating by adding necessary features to multiBar model
+nv.models.discreteBar = function() {
+ "use strict";
+ //============================================================
+ // Public Variables with Default Settings
+ //------------------------------------------------------------
+
+ var margin = {top: 0, right: 0, bottom: 0, left: 0}
+ , width = 960
+ , height = 500
+ , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
+ , x = d3.scale.ordinal()
+ , y = d3.scale.linear()
+ , getX = function(d) { return d.x }
+ , getY = function(d) { return d.y }
+ , forceY = [0] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
+ , color = nv.utils.defaultColor()
+ , showValues = false
+ , valueFormat = d3.format(',.2f')
+ , xDomain
+ , yDomain
+ , xRange
+ , yRange
+ , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
+ , rectClass = 'discreteBar'
+ ;
+
+ //============================================================
+
+
+ //============================================================
+ // Private Variables
+ //------------------------------------------------------------
+
+ var x0, y0;
+
+ //============================================================
+
+
+ function chart(selection) {
+ selection.each(function(data) {
+ var availableWidth = width - margin.left - margin.right,
+ availableHeight = height - margin.top - margin.bottom,
+ container = d3.select(this);
+
+
+ //add series index to each data point for reference
+ data.forEach(function(series, i) {
+ series.values.forEach(function(point) {
+ point.series = i;
+ });
+ });
+
+
+ //------------------------------------------------------------
+ // Setup Scales
+
+ // remap and flatten the data for use in calculating the scales' domains
+ var seriesData = (xDomain && yDomain) ? [] : // if we know xDomain and yDomain, no need to calculate
+ data.map(function(d) {
+ return d.values.map(function(d,i) {
+ return { x: getX(d,i), y: getY(d,i), y0: d.y0 }
+ })
+ });
+
+ x .domain(xDomain || d3.merge(seriesData).map(function(d) { return d.x }))
+ .rangeBands(xRange || [0, availableWidth], .1);
+
+ y .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y }).concat(forceY)));
+
+
+ // If showValues, pad the Y axis range to account for label height
+ if (showValues) y.range(yRange || [availableHeight - (y.domain()[0] < 0 ? 12 : 0), y.domain()[1] > 0 ? 12 : 0]);
+ else y.range(yRange || [availableHeight, 0]);
+
+ //store old scales if they exist
+ x0 = x0 || x;
+ y0 = y0 || y.copy().range([y(0),y(0)]);
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup containers and skeleton of chart
+
+ var wrap = container.selectAll('g.nv-wrap.nv-discretebar').data([data]);
+ var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-discretebar');
+ var gEnter = wrapEnter.append('g');
+ var g = wrap.select('g');
+
+ gEnter.append('g').attr('class', 'nv-groups');
+
+ wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
+
+ //------------------------------------------------------------
+
+
+
+ //TODO: by definition, the discrete bar should not have multiple groups, will modify/remove later
+ 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 });
+ groups
+ .transition()
+ .style('stroke-opacity', 1)
+ .style('fill-opacity', .75);
+
+
+ var bars = groups.selectAll('g.nv-bar')
+ .data(function(d) { return d.values });
+
+ bars.exit().remove();
+
+
+ var barsEnter = bars.enter().append('g')
+ .attr('transform', function(d,i,j) {
+ return 'translate(' + (x(getX(d,i)) + x.rangeBand() * .05 ) + ', ' + y(0) + ')'
+ })
+ .on('mouseover', function(d,i) { //TODO: figure out why j works above, but not here
+ d3.select(this).classed('hover', true);
+ dispatch.elementMouseover({
+ value: getY(d,i),
+ point: d,
+ series: data[d.series],
+ pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))], // TODO: Figure out why the value appears to be shifted
+ pointIndex: i,
+ seriesIndex: d.series,
+ e: d3.event
+ });
+ })
+ .on('mouseout', function(d,i) {
+ d3.select(this).classed('hover', false);
+ dispatch.elementMouseout({
+ value: getY(d,i),
+ point: d,
+ series: data[d.series],
+ pointIndex: i,
+ seriesIndex: d.series,
+ e: d3.event
+ });
+ })
+ .on('click', function(d,i) {
+ dispatch.elementClick({
+ value: getY(d,i),
+ point: d,
+ series: data[d.series],
+ pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))], // TODO: Figure out why the value appears to be shifted
+ pointIndex: i,
+ seriesIndex: d.series,
+ e: d3.event
+ });
+ d3.event.stopPropagation();
+ })
+ .on('dblclick', function(d,i) {
+ dispatch.elementDblClick({
+ value: getY(d,i),
+ point: d,
+ series: data[d.series],
+ pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))], // TODO: Figure out why the value appears to be shifted
+ pointIndex: i,
+ seriesIndex: d.series,
+ e: d3.event
+ });
+ d3.event.stopPropagation();
+ });
+
+ barsEnter.append('rect')
+ .attr('height', 0)
+ .attr('width', x.rangeBand() * .9 / data.length )
+
+ if (showValues) {
+ barsEnter.append('text')
+ .attr('text-anchor', 'middle')
+ ;
+
+ bars.select('text')
+ .text(function(d,i) { return valueFormat(getY(d,i)) })
+ .transition()
+ .attr('x', x.rangeBand() * .9 / 2)
+ .attr('y', function(d,i) { return getY(d,i) < 0 ? y(getY(d,i)) - y(0) + 12 : -4 })
+
+ ;
+ } else {
+ bars.selectAll('text').remove();
+ }
+
+ bars
+ .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive' })
+ .style('fill', function(d,i) { return d.color || color(d,i) })
+ .style('stroke', function(d,i) { return d.color || color(d,i) })
+ .select('rect')
+ .attr('class', rectClass)
+ .transition()
+ .attr('width', x.rangeBand() * .9 / data.length);
+ bars.transition()
+ //.delay(function(d,i) { return i * 1200 / data[0].values.length })
+ .attr('transform', function(d,i) {
+ var left = x(getX(d,i)) + x.rangeBand() * .05,
+ top = getY(d,i) < 0 ?
+ y(0) :
+ y(0) - y(getY(d,i)) < 1 ?
+ y(0) - 1 : //make 1 px positive bars show up above y=0
+ y(getY(d,i));
+
+ return 'translate(' + left + ', ' + top + ')'
+ })
+ .select('rect')
+ .attr('height', function(d,i) {
+ return Math.max(Math.abs(y(getY(d,i)) - y((yDomain && yDomain[0]) || 0)) || 1)
+ });
+
+
+ //store old scales for use in transitions on update
+ x0 = x.copy();
+ y0 = y.copy();
+
+ });
+
+ return chart;
+ }
+
+
+ //============================================================
+ // Expose Public Variables
+ //------------------------------------------------------------
+
+ chart.dispatch = dispatch;
+
+ chart.options = nv.utils.optionsFunc.bind(chart);
+
+ chart.x = function(_) {
+ if (!arguments.length) return getX;
+ getX = _;
+ return chart;
+ };
+
+ chart.y = function(_) {
+ if (!arguments.length) return getY;
+ getY = _;
+ return 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.xScale = function(_) {
+ if (!arguments.length) return x;
+ x = _;
+ return chart;
+ };
+
+ chart.yScale = function(_) {
+ if (!arguments.length) return y;
+ y = _;
+ return chart;
+ };
+
+ chart.xDomain = function(_) {
+ if (!arguments.length) return xDomain;
+ xDomain = _;
+ return chart;
+ };
+
+ chart.yDomain = function(_) {
+ if (!arguments.length) return yDomain;
+ yDomain = _;
+ return chart;
+ };
+
+ chart.xRange = function(_) {
+ if (!arguments.length) return xRange;
+ xRange = _;
+ return chart;
+ };
+
+ chart.yRange = function(_) {
+ if (!arguments.length) return yRange;
+ yRange = _;
+ return chart;
+ };
+
+ chart.forceY = function(_) {
+ if (!arguments.length) return forceY;
+ forceY = _;
+ return chart;
+ };
+
+ chart.color = function(_) {
+ if (!arguments.length) return color;
+ color = nv.utils.getColor(_);
+ return chart;
+ };
+
+ chart.id = function(_) {
+ if (!arguments.length) return id;
+ id = _;
+ return chart;
+ };
+
+ chart.showValues = function(_) {
+ if (!arguments.length) return showValues;
+ showValues = _;
+ return chart;
+ };
+
+ chart.valueFormat= function(_) {
+ if (!arguments.length) return valueFormat;
+ valueFormat = _;
+ return chart;
+ };
+
+ chart.rectClass= function(_) {
+ if (!arguments.length) return rectClass;
+ rectClass = _;
+ return chart;
+ };
+ //============================================================
+
+
+ return chart;
+}
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