335 lines
8.6 KiB
JavaScript
335 lines
8.6 KiB
JavaScript
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nv.models.cumulativeLine = function() {
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var margin = {top: 30, right: 20, bottom: 30, left: 60},
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getWidth = function() { return 960 },
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getHeight = function() { return 500 },
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color = d3.scale.category20().range(),
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dotRadius = function() { return 2.5 },
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getX = function(d) { return d.x },
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getY = function(d) { return d.y },
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id = Math.floor(Math.random() * 10000), //Create semi-unique ID incase user doesn't select one
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showRescaleToggle = true,
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rescaleY = true;
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var x = d3.scale.linear(),
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dx = d3.scale.linear(),
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y = d3.scale.linear(),
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xAxis = nv.models.axis().scale(x).orient('bottom'),
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yAxis = nv.models.axis().scale(y).orient('left'),
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legend = nv.models.legend().height(30),
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controls = nv.models.legend().height(30),
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lines = nv.models.line(),
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dispatch = d3.dispatch('tooltipShow', 'tooltipHide'),
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index = {i: 0, x: 0};
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//TODO: let user select default
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var controlsData = [
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{ key: 'Re-scale y-axis' }
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];
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var indexDrag = d3.behavior.drag()
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.on('dragstart', dragStart)
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.on('drag', dragMove)
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.on('dragend', dragEnd);
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function dragStart(d,i) {}
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function dragMove(d,i) {
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d.x += d3.event.dx;
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d.i = Math.round(dx.invert(d.x));
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//d3.transition(d3.select('.chart-' + id)).call(chart);
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d3.select(this).attr("transform", "translate(" + dx(d.i) + ",0)");
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}
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function dragEnd(d,i) {
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d3.transition(d3.select('.chart-' + id)).call(chart);
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}
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function chart(selection) {
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selection.each(function(data) {
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var width = getWidth(),
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height = getHeight(),
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availableWidth = width - margin.left - margin.right,
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availableHeight = height - margin.top - margin.bottom;
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var series = indexify(index.i, data);
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var seriesData = series
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.filter(function(d) { return !rescaleY || !d.disabled }) // only filter out if rescaling y axis
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.map(function(d) { return d.values });
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x .domain(d3.extent(d3.merge(seriesData), function(d) { return d.x } ))
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.range([0, availableWidth]);
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dx .domain([0, data[0].values.length - 1]) //Assumes all series have same length
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.range([0, availableWidth])
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.clamp(true);
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y .domain(d3.extent(d3.merge(seriesData), function(d) { return d.y } ))
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.range([availableHeight, 0]);
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lines
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.width(availableWidth)
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.height(availableHeight)
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.color(data.map(function(d,i) {
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return d.color || color[i % color.length];
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}).filter(function(d,i) { return !data[i].disabled }))
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var wrap = d3.select(this).classed('chart-' + id, true).selectAll('g.wrap').data([series]);
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var gEnter = wrap.enter().append('g').attr('class', 'wrap nvd3 cumulativeLine').append('g');
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gEnter.append('g').attr('class', 'x axis');
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gEnter.append('g').attr('class', 'y axis');
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gEnter.append('g').attr('class', 'linesWrap');
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gEnter.append('g').attr('class', 'legendWrap');
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gEnter.append('g').attr('class', 'controlsWrap');
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//TODO: margins should be adjusted based on what components are used: axes, axis labels, legend
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margin.top = legend.height();
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var g = wrap.select('g')
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.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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legend.width(width/2 - margin.right);
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g.select('.legendWrap')
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.datum(data)
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.attr('transform', 'translate(' + (width/2 - margin.left) + ',' + (-margin.top) +')')
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.call(legend);
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if (showRescaleToggle) {
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controls.width(140).color(['#444', '#444', '#444']);
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g.select('.controlsWrap')
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.datum(controlsData)
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.attr('transform', 'translate(0,' + (-margin.top) +')')
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.call(controls);
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}
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var linesWrap = g.select('.linesWrap')
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.datum(series.filter(function(d) { return !d.disabled }))
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d3.transition(linesWrap).call(lines);
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var indexLine = linesWrap.selectAll('.indexLine')
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.data([index]);
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indexLine.enter().append('rect').attr('class', 'indexLine')
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.attr('width', 3)
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.attr('x', -2)
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.attr('fill', 'red')
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.attr('fill-opacity', .5)
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.call(indexDrag)
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indexLine
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.attr("transform", function(d) { return "translate(" + dx(d.i) + ",0)" })
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.attr('height', availableHeight)
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xAxis
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.domain(x.domain())
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.range(x.range())
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.ticks( width / 100 )
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.tickSize(-availableHeight, 0);
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g.select('.x.axis')
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.attr('transform', 'translate(0,' + y.range()[0] + ')');
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d3.transition(g.select('.x.axis'))
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.call(xAxis);
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yAxis
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.domain(y.domain())
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.range(y.range())
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.ticks( height / 36 )
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.tickSize(-availableWidth, 0);
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d3.transition(g.select('.y.axis'))
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.call(yAxis);
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// ********** EVENT LISTENERS **********
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legend.dispatch.on('legendClick', function(d,i) {
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d.disabled = !d.disabled;
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if (!data.filter(function(d) { return !d.disabled }).length) {
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data.map(function(d) {
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d.disabled = false;
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wrap.selectAll('.series').classed('disabled', false);
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return d;
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});
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}
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selection.transition().call(chart);
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});
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/*
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legend.dispatch.on('legendMouseover', function(d, i) {
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d.hover = true;
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selection.transition().call(chart)
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});
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legend.dispatch.on('legendMouseout', function(d, i) {
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d.hover = false;
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selection.transition().call(chart)
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});
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*/
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controls.dispatch.on('legendClick', function(d,i) {
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d.disabled = !d.disabled;
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rescaleY = !d.disabled;
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//console.log(d,i,arguments);
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selection.transition().call(chart);
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});
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lines.dispatch.on('elementMouseover.tooltip', function(e) {
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dispatch.tooltipShow({
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point: e.point,
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series: e.series,
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pos: [e.pos[0] + margin.left, e.pos[1] + margin.top],
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seriesIndex: e.seriesIndex,
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pointIndex: e.pointIndex
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});
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});
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lines.dispatch.on('elementMouseout.tooltip', function(e) {
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dispatch.tooltipHide(e);
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});
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});
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return chart;
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}
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// ********** FUNCTIONS **********
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/* Normalize the data according to an index point. */
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function indexify(idx, data) {
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return data.map(function(line, i) {
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var v = getY(line.values[idx], idx);
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return {
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key: line.key,
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values: line.values.map(function(point, pointIndex) {
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return {'x': getX(point, pointIndex), 'y': (getY(point, pointIndex) - v) / (1 + v) };
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}),
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disabled: line.disabled,
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hover: line.hover
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/*
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if (v < -.9) {
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//if a series loses more than 100%, calculations fail.. anything close can cause major distortion (but is mathematically currect till it hits 100)
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}
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*/
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};
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});
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};
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// ********** PUBLIC ACCESSORS **********
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chart.dispatch = dispatch;
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chart.x = function(_) {
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if (!arguments.length) return getX;
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getX = _;
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//lines.x(_);
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return chart;
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};
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chart.y = function(_) {
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if (!arguments.length) return getY;
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getY = _;
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//lines.y(_);
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return chart;
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};
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chart.margin = function(_) {
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if (!arguments.length) return margin;
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margin = _;
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return chart;
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};
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/*
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chart.width = function(_) {
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if (!arguments.length) return width;
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width = _;
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return chart;
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};
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chart.height = function(_) {
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if (!arguments.length) return height;
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height = _;
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return chart;
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};
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*/
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chart.width = function(_) {
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if (!arguments.length) return getWidth;
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getWidth = d3.functor(_);
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return chart;
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};
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chart.height = function(_) {
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if (!arguments.length) return getHeight;
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getHeight = d3.functor(_);
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return chart;
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};
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chart.color = function(_) {
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if (!arguments.length) return color;
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color = _;
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legend.color(_);
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return chart;
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};
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chart.dotRadius = function(_) {
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if (!arguments.length) return dotRadius;
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dotRadius = d3.functor(_);
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lines.dotRadius = _;
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return chart;
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};
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chart.showRescaleToggle = function(_) {
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if (!arguments.length) return showRescaleToggle;
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showRescaleToggle = _;
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return chart;
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};
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// Expose the x-axis' tickFormat method.
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//chart.xAxis = {};
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//d3.rebind(chart.xAxis, xAxis, 'tickFormat');
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chart.xAxis = xAxis;
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// Expose the y-axis' tickFormat method.
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//chart.yAxis = {};
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//d3.rebind(chart.yAxis, yAxis, 'tickFormat');
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chart.yAxis = yAxis;
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return chart;
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}
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