nv.models.multiBarHorizontal = 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()
, barColor = null // adding the ability to set the color for each rather than the whole group
, disabled // used in conjunction with barColor to communicate from multiBarHorizontalChart what series are disabled
, stacked = false
, showValues = false
, showBarLabels = false
, valuePadding = 60
, valueFormat = d3.format(',.2f')
, delay = 1200
, xDomain
, yDomain
, xRange
, yRange
, dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
;
//============================================================
//============================================================
// 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);
if (stacked)
data = d3.layout.stack()
.offset('zero')
.values(function(d){ return d.values })
.y(getY)
(data);
//add series index to each data point for reference
data.forEach(function(series, i) {
series.values.forEach(function(point) {
point.series = i;
});
});
//------------------------------------------------------------
// HACK for negative value stacking
if (stacked)
data[0].values.map(function(d,i) {
var posBase = 0, negBase = 0;
data.map(function(d) {
var f = d.values[i]
f.size = Math.abs(f.y);
if (f.y<0) {
f.y1 = negBase - f.size;
negBase = negBase - f.size;
} else
{
f.y1 = posBase;
posBase = posBase + f.size;
}
});
});
//------------------------------------------------------------
// 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, y1: d.y1 }
})
});
x .domain(xDomain || d3.merge(seriesData).map(function(d) { return d.x }))
.rangeBands(xRange || [0, availableHeight], .1);
//y .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y + (stacked ? d.y0 : 0) }).concat(forceY)))
y .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return stacked ? (d.y > 0 ? d.y1 + d.y : d.y1 ) : d.y }).concat(forceY)))
if (showValues && !stacked)
y.range(yRange || [(y.domain()[0] < 0 ? valuePadding : 0), availableWidth - (y.domain()[1] > 0 ? valuePadding : 0) ]);
else
y.range(yRange || [0, availableWidth]);
x0 = x0 || x;
y0 = y0 || d3.scale.linear().domain(y.domain()).range([y(0),y(0)]);
//------------------------------------------------------------
//------------------------------------------------------------
// Setup containers and skeleton of chart
var wrap = d3.select(this).selectAll('g.nv-wrap.nv-multibarHorizontal').data([data]);
var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multibarHorizontal');
var defsEnter = wrapEnter.append('defs');
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 + ')');
//------------------------------------------------------------
var groups = wrap.select('.nv-groups').selectAll('.nv-group')
.data(function(d) { return d }, function(d,i) { return i });
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', .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(' + y0(stacked ? d.y0 : 0) + ',' + (stacked ? 0 : (j * x.rangeBand() / data.length ) + x(getX(d,i))) + ')'
});
barsEnter.append('rect')
.attr('width', 0)
.attr('height', x.rangeBand() / (stacked ? 1 : data.length) )
bars
.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: [ y(getY(d,i) + (stacked ? d.y0 : 0)), x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length) ],
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() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))], // 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() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))], // TODO: Figure out why the value appears to be shifted
pointIndex: i,
seriesIndex: d.series,
e: d3.event
});
d3.event.stopPropagation();
});
barsEnter.append('text');
if (showValues && !stacked) {
bars.select('text')
.attr('text-anchor', function(d,i) { return getY(d,i) < 0 ? 'end' : 'start' })
.attr('y', x.rangeBand() / (data.length * 2))
.attr('dy', '.32em')
.text(function(d,i) { return valueFormat(getY(d,i)) })
bars.transition()
.select('text')
.attr('x', function(d,i) { return getY(d,i) < 0 ? -4 : y(getY(d,i)) - y(0) + 4 })
} else {
bars.selectAll('text').text('');
}
if (showBarLabels && !stacked) {
barsEnter.append('text').classed('nv-bar-label',true);
bars.select('text.nv-bar-label')
.attr('text-anchor', function(d,i) { return getY(d,i) < 0 ? 'start' : 'end' })
.attr('y', x.rangeBand() / (data.length * 2))
.attr('dy', '.32em')
.text(function(d,i) { return getX(d,i) });
bars.transition()
.select('text.nv-bar-label')
.attr('x', function(d,i) { return getY(d,i) < 0 ? y(0) - y(getY(d,i)) + 4 : -4 });
}
else {
bars.selectAll('text.nv-bar-label').text('');
}
bars
.attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})
if (barColor) {
if (!disabled) disabled = data.map(function() { return true });
bars
.style('fill', function(d,i,j) { return d3.rgb(barColor(d,i)).darker( disabled.map(function(d,i) { return i }).filter(function(d,i){ return !disabled[i] })[j] ).toString(); })
.style('stroke', function(d,i,j) { return d3.rgb(barColor(d,i)).darker( disabled.map(function(d,i) { return i }).filter(function(d,i){ return !disabled[i] })[j] ).toString(); });
}
if (stacked)
bars.transition()
.attr('transform', function(d,i) {
return 'translate(' + y(d.y1) + ',' + x(getX(d,i)) + ')'
})
.select('rect')
.attr('width', function(d,i) {
return Math.abs(y(getY(d,i) + d.y0) - y(d.y0))
})
.attr('height', x.rangeBand() );
else
bars.transition()
.attr('transform', function(d,i) {
//TODO: stacked must be all positive or all negative, not both?
return 'translate(' +
(getY(d,i) < 0 ? y(getY(d,i)) : y(0))
+ ',' +
(d.series * x.rangeBand() / data.length
+
x(getX(d,i)) )
+ ')'
})
.select('rect')
.attr('height', x.rangeBand() / data.length )
.attr('width', function(d,i) {
return Math.max(Math.abs(y(getY(d,i)) - y(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.stacked = function(_) {
if (!arguments.length) return stacked;
stacked = _;
return chart;
};
chart.color = function(_) {
if (!arguments.length) return color;
color = nv.utils.getColor(_);
return chart;
};
chart.barColor = function(_) {
if (!arguments.length) return barColor;
barColor = nv.utils.getColor(_);
return chart;
};
chart.disabled = function(_) {
if (!arguments.length) return disabled;
disabled = _;
return chart;
};
chart.id = function(_) {
if (!arguments.length) return id;
id = _;
return chart;
};
chart.delay = function(_) {
if (!arguments.length) return delay;
delay = _;
return chart;
};
chart.showValues = function(_) {
if (!arguments.length) return showValues;
showValues = _;
return chart;
};
chart.showBarLabels = function(_) {
if (!arguments.length) return showBarLabels;
showBarLabels = _;
return chart;
};
chart.valueFormat= function(_) {
if (!arguments.length) return valueFormat;
valueFormat = _;
return chart;
};
chart.valuePadding = function(_) {
if (!arguments.length) return valuePadding;
valuePadding = _;
return chart;
};
//============================================================
return chart;
}