353 lines
9.9 KiB
JavaScript
353 lines
9.9 KiB
JavaScript
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nv.models.lineWithFocus = function() {
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var margin = {top: 30, right: 20, bottom: 30, left: 60},
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margin2 = {top: 0, right: 20, bottom: 20, left: 60},
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width = 960,
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height = 500,
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height1 = 400,
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height2 = 100,
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color = d3.scale.category20().range(),
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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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var x = d3.scale.linear(),
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y = d3.scale.linear(),
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x2 = d3.scale.linear(),
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y2 = 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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xAxis2 = nv.models.axis().scale(x2).orient('bottom'),
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yAxis2 = nv.models.axis().scale(y2).orient('left'),
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legend = nv.models.legend().height(30),
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focus = nv.models.line().clipEdge(true),
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context = nv.models.line().interactive(false),
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dispatch = d3.dispatch('tooltipShow', 'tooltipHide'),
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brush = d3.svg.brush()
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.x(x2);
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//var wrap, gEnter, g, focus, focusLines, contextWrap, focusWrap, contextLines; //brought all variables to this scope for use within brush function... is this a bad idea?
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//var seriesData; //Temporarily bringing this data to this scope.... may be bad idea (same with above).. may need to rethink brushing
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function chart(selection) {
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selection.each(function(data) {
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seriesData = data.filter(function(d) { return !d.disabled })
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.map(function(d) { return d.values });
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x2 .domain(d3.extent(d3.merge(seriesData), getX ))
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.range([0, width - margin.left - margin.right]);
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y2 .domain(d3.extent(d3.merge(seriesData), getY ))
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.range([height2 - margin2.top - margin2.bottom, 0]);
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x .domain(brush.empty() ? x2.domain() : brush.extent())
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.range([0, width - margin.left - margin.right]);
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y .domain(y2.domain())
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.range([height1 - margin.top - margin.bottom, 0]);
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brush.on('brush', onBrush);
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focus
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.width(width - margin.left - margin.right)
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.height(height1 - margin.top - margin.bottom)
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.color(data.map(function(d,i) {
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return d.color || color[i % 10];
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}).filter(function(d,i) { return !data[i].disabled }))
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context
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.width(width - margin.left - margin.right)
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.height(height2 - margin2.top - margin2.bottom)
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.color(data.map(function(d,i) {
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return d.color || color[i % 10];
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}).filter(function(d,i) { return !data[i].disabled }))
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updateFocus();
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var wrap = d3.select(this).selectAll('g.wrap').data([data]);
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var gEnter = wrap.enter().append('g').attr('class', 'wrap d3lineWithFocus').append('g');
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gEnter.append('g').attr('class', 'focus');
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gEnter.append('g').attr('class', 'context');
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gEnter.append('g').attr('class', 'legendWrap');
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var g = wrap.select('g')
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//.attr('transform', 'translate(0,0)');
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// ********** LEGEND **********
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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) + ',0)')
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.call(legend);
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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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// ********** FOCUS **********
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var focusWrap = g.select('.focus')
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.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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gEnter.select('.focus').append('g').attr('class', 'x axis');
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gEnter.select('.focus').append('g').attr('class', 'y axis');
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gEnter.select('.focus').append('g').attr('class', 'focusLines');
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var focusLines = focusWrap.select('.focusLines')
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.datum(data.filter(function(d) { return !d.disabled }))
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d3.transition(focusLines).call(focus);
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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(-(height1 - margin.top - margin.bottom), 0);
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focusWrap.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(-(width - margin.right - margin.left), 0);
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d3.transition(g.select('.y.axis'))
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.call(yAxis);
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// ********** CONTEXT **********
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var contextWrap = g.select('.context')
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.attr('transform', 'translate(' + margin2.left + ',' + height1 + ')');
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gEnter.select('.context').append('g').attr('class', 'x2 axis');
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gEnter.select('.context').append('g').attr('class', 'y2 axis');
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gEnter.select('.context').append('g').attr('class', 'contextLines');
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gEnter.select('.context').append('g').attr('class', 'x brush')
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.attr('class', 'x brush')
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.call(brush)
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.selectAll('rect')
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.attr('y', -5)
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.attr('height', height2 + 4);
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var contextLines = contextWrap.select('.contextLines')
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.datum(data.filter(function(d) { return !d.disabled }))
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d3.transition(contextLines).call(context);
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xAxis2
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.domain(x2.domain())
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.range(x2.range())
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.ticks( width / 100 )
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.tickSize(-(height2 - margin2.top - margin2.bottom), 0);
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contextWrap.select('.x2.axis')
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.attr('transform', 'translate(0,' + y2.range()[0] + ')');
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d3.transition(contextWrap.select('.x2.axis'))
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.call(xAxis2);
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yAxis2
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.domain(y2.domain())
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.range(y2.range())
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.ticks( (height2 - margin2.top - margin2.bottom) / 24 )
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.tickSize(-(width - margin2.right - margin2.left), 0);
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contextWrap.select('.y2.axis');
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d3.transition(contextWrap.select('.y2.axis'))
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.call(yAxis2);
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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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focus.dispatch.on('pointMouseover.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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focus.dispatch.on('pointMouseout.tooltip', function(e) {
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dispatch.tooltipHide(e);
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});
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function onBrush() {
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updateFocus();
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focusLines.call(focus)
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wrap.select('.x.axis').call(xAxis);
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wrap.select('.y.axis').call(yAxis);
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}
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function updateFocus() {
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var yDomain = brush.empty() ? y2.domain() : d3.extent(d3.merge(seriesData).filter(function(d) {
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return getX(d) >= brush.extent()[0] && getX(d) <= brush.extent()[1];
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}), getY); //This doesn't account for the 1 point before and the 1 point after the domain. Would fix, but likely need to change entire methodology here
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if (typeof yDomain[0] == 'undefined') yDomain = y2.domain(); //incase the brush doesn't cover a single point
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x.domain(brush.empty() ? x2.domain() : brush.extent());
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y.domain(yDomain);
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//TODO: Rethink this... performance is horrible, likely need to cut off focus data to within the range
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// If I limit the data for focusLines would want to include 1 point before and after the extent,
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// Need to figure out an optimized way to accomplish this.
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// ***One concern is to try not to make the assumption that all lines are of the same length, and
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// points with the same index have the same x value (while this is true in our test cases, may
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// no always be)
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focus.xDomain(x.domain());
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focus.yDomain(y.domain());
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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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// ********** 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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focus.x(_);
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context.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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focus.y(_);
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context.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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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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height1 = _ - height2;
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return chart;
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};
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chart.contextHeight = function(_) {
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if (!arguments.length) return height2;
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height2 = _;
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height1 = height - _;
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return chart;
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};
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chart.id = function(_) {
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if (!arguments.length) return id;
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id = _;
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return chart;
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};
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// Chart has multiple similar Axes, to prevent code duplication, probably need to link all axis functions manually like below
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chart.xTickFormat = function(_) {
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if (!arguments.length) return x.tickFormat();
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xAxis.tickFormat(_);
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xAxis2.tickFormat(_);
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return chart;
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};
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chart.yTickFormat = function(_) {
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if (!arguments.length) return y.tickFormat();
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yAxis.tickFormat(_);
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yAxis2.tickFormat(_);
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return chart;
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};
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//TODO: allow for both focus and context axes to be linked
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chart.xAxis = xAxis;
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chart.yAxis = yAxis;
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return chart;
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}
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