//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; }