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675 lines
22 KiB
JavaScript
675 lines
22 KiB
JavaScript
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nv.models.scatter = function() {
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"use strict";
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//============================================================
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// Public Variables with Default Settings
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//------------------------------------------------------------
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var margin = {top: 0, right: 0, bottom: 0, left: 0}
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, width = 960
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, height = 500
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, color = nv.utils.defaultColor() // chooses color
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, id = Math.floor(Math.random() * 100000) //Create semi-unique ID incase user doesn't select one
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, x = d3.scale.linear()
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, y = d3.scale.linear()
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, z = d3.scale.linear() //linear because d3.svg.shape.size is treated as area
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, getX = function(d) { return d.x } // accessor to get the x value
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, getY = function(d) { return d.y } // accessor to get the y value
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, getSize = function(d) { return d.size || 1} // accessor to get the point size
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, getShape = function(d) { return d.shape || 'circle' } // accessor to get point shape
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, onlyCircles = true // Set to false to use shapes
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, forceX = [] // List of numbers to Force into the X scale (ie. 0, or a max / min, etc.)
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, forceY = [] // List of numbers to Force into the Y scale
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, forceSize = [] // List of numbers to Force into the Size scale
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, interactive = true // If true, plots a voronoi overlay for advanced point intersection
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, pointKey = null
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, pointActive = function(d) { return !d.notActive } // any points that return false will be filtered out
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, padData = false // If true, adds half a data points width to front and back, for lining up a line chart with a bar chart
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, padDataOuter = .1 //outerPadding to imitate ordinal scale outer padding
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, clipEdge = false // if true, masks points within x and y scale
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, clipVoronoi = true // if true, masks each point with a circle... can turn off to slightly increase performance
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, clipRadius = function() { return 25 } // function to get the radius for voronoi point clips
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, xDomain = null // Override x domain (skips the calculation from data)
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, yDomain = null // Override y domain
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, xRange = null // Override x range
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, yRange = null // Override y range
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, sizeDomain = null // Override point size domain
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, sizeRange = null
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, singlePoint = false
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, dispatch = d3.dispatch('elementClick', 'elementMouseover', 'elementMouseout')
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, useVoronoi = true
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;
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//============================================================
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//============================================================
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// Private Variables
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//------------------------------------------------------------
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var x0, y0, z0 // used to store previous scales
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, timeoutID
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, needsUpdate = false // Flag for when the points are visually updating, but the interactive layer is behind, to disable tooltips
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;
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//============================================================
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function chart(selection) {
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selection.each(function(data) {
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var availableWidth = width - margin.left - margin.right,
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availableHeight = height - margin.top - margin.bottom,
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container = d3.select(this);
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//add series index to each data point for reference
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data.forEach(function(series, i) {
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series.values.forEach(function(point) {
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point.series = i;
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});
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});
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//------------------------------------------------------------
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// Setup Scales
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// remap and flatten the data for use in calculating the scales' domains
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var seriesData = (xDomain && yDomain && sizeDomain) ? [] : // if we know xDomain and yDomain and sizeDomain, no need to calculate.... if Size is constant remember to set sizeDomain to speed up performance
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d3.merge(
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data.map(function(d) {
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return d.values.map(function(d,i) {
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return { x: getX(d,i), y: getY(d,i), size: getSize(d,i) }
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})
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})
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);
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x .domain(xDomain || d3.extent(seriesData.map(function(d) { return d.x; }).concat(forceX)))
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if (padData && data[0])
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x.range(xRange || [(availableWidth * padDataOuter + availableWidth) / (2 *data[0].values.length), availableWidth - availableWidth * (1 + padDataOuter) / (2 * data[0].values.length) ]);
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//x.range([availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5) / data[0].values.length ]);
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else
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x.range(xRange || [0, availableWidth]);
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y .domain(yDomain || d3.extent(seriesData.map(function(d) { return d.y }).concat(forceY)))
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.range(yRange || [availableHeight, 0]);
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z .domain(sizeDomain || d3.extent(seriesData.map(function(d) { return d.size }).concat(forceSize)))
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.range(sizeRange || [16, 256]);
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// If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
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if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
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if (x.domain()[0] === x.domain()[1])
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x.domain()[0] ?
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x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
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: x.domain([-1,1]);
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if (y.domain()[0] === y.domain()[1])
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y.domain()[0] ?
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y.domain([y.domain()[0] - y.domain()[0] * 0.01, y.domain()[1] + y.domain()[1] * 0.01])
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: y.domain([-1,1]);
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if ( isNaN(x.domain()[0])) {
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x.domain([-1,1]);
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}
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if ( isNaN(y.domain()[0])) {
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y.domain([-1,1]);
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}
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x0 = x0 || x;
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y0 = y0 || y;
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z0 = z0 || z;
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Setup containers and skeleton of chart
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var wrap = container.selectAll('g.nv-wrap.nv-scatter').data([data]);
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var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-scatter nv-chart-' + id + (singlePoint ? ' nv-single-point' : ''));
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var defsEnter = wrapEnter.append('defs');
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var gEnter = wrapEnter.append('g');
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var g = wrap.select('g');
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gEnter.append('g').attr('class', 'nv-groups');
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gEnter.append('g').attr('class', 'nv-point-paths');
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wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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//------------------------------------------------------------
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defsEnter.append('clipPath')
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.attr('id', 'nv-edge-clip-' + id)
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.append('rect');
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wrap.select('#nv-edge-clip-' + id + ' rect')
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.attr('width', availableWidth)
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.attr('height', (availableHeight > 0) ? availableHeight : 0);
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g .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '');
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function updateInteractiveLayer() {
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if (!interactive) return false;
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var eventElements;
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var vertices = d3.merge(data.map(function(group, groupIndex) {
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return group.values
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.map(function(point, pointIndex) {
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// *Adding noise to make duplicates very unlikely
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// *Injecting series and point index for reference
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/* *Adding a 'jitter' to the points, because there's an issue in d3.geom.voronoi.
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*/
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var pX = getX(point,pointIndex);
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var pY = getY(point,pointIndex);
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return [x(pX)+ Math.random() * 1e-7,
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y(pY)+ Math.random() * 1e-7,
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groupIndex,
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pointIndex, point]; //temp hack to add noise untill I think of a better way so there are no duplicates
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})
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.filter(function(pointArray, pointIndex) {
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return pointActive(pointArray[4], pointIndex); // Issue #237.. move filter to after map, so pointIndex is correct!
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})
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})
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);
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//inject series and point index for reference into voronoi
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if (useVoronoi === true) {
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if (clipVoronoi) {
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var pointClipsEnter = wrap.select('defs').selectAll('.nv-point-clips')
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.data([id])
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.enter();
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pointClipsEnter.append('clipPath')
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.attr('class', 'nv-point-clips')
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.attr('id', 'nv-points-clip-' + id);
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var pointClips = wrap.select('#nv-points-clip-' + id).selectAll('circle')
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.data(vertices);
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pointClips.enter().append('circle')
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.attr('r', clipRadius);
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pointClips.exit().remove();
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pointClips
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.attr('cx', function(d) { return d[0] })
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.attr('cy', function(d) { return d[1] });
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wrap.select('.nv-point-paths')
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.attr('clip-path', 'url(#nv-points-clip-' + id + ')');
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}
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if(vertices.length) {
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// Issue #283 - Adding 2 dummy points to the voronoi b/c voronoi requires min 3 points to work
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vertices.push([x.range()[0] - 20, y.range()[0] - 20, null, null]);
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vertices.push([x.range()[1] + 20, y.range()[1] + 20, null, null]);
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vertices.push([x.range()[0] - 20, y.range()[0] + 20, null, null]);
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vertices.push([x.range()[1] + 20, y.range()[1] - 20, null, null]);
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}
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var bounds = d3.geom.polygon([
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[-10,-10],
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[-10,height + 10],
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[width + 10,height + 10],
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[width + 10,-10]
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]);
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var voronoi = d3.geom.voronoi(vertices).map(function(d, i) {
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return {
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'data': bounds.clip(d),
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'series': vertices[i][2],
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'point': vertices[i][3]
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}
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});
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var pointPaths = wrap.select('.nv-point-paths').selectAll('path')
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.data(voronoi);
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pointPaths.enter().append('path')
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.attr('class', function(d,i) { return 'nv-path-'+i; });
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pointPaths.exit().remove();
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pointPaths
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.attr('d', function(d) {
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if (d.data.length === 0)
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return 'M 0 0'
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else
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return 'M' + d.data.join('L') + 'Z';
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});
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var mouseEventCallback = function(d,mDispatch) {
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if (needsUpdate) return 0;
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var series = data[d.series];
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if (typeof series === 'undefined') return;
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var point = series.values[d.point];
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mDispatch({
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point: point,
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series: series,
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pos: [x(getX(point, d.point)) + margin.left, y(getY(point, d.point)) + margin.top],
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seriesIndex: d.series,
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pointIndex: d.point
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});
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};
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pointPaths
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.on('click', function(d) {
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mouseEventCallback(d, dispatch.elementClick);
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})
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.on('mouseover', function(d) {
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mouseEventCallback(d, dispatch.elementMouseover);
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})
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.on('mouseout', function(d, i) {
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mouseEventCallback(d, dispatch.elementMouseout);
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});
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} else {
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/*
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// bring data in form needed for click handlers
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var dataWithPoints = vertices.map(function(d, i) {
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return {
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'data': d,
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'series': vertices[i][2],
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'point': vertices[i][3]
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}
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});
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*/
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// add event handlers to points instead voronoi paths
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wrap.select('.nv-groups').selectAll('.nv-group')
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.selectAll('.nv-point')
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//.data(dataWithPoints)
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//.style('pointer-events', 'auto') // recativate events, disabled by css
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.on('click', function(d,i) {
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//nv.log('test', d, i);
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if (needsUpdate || !data[d.series]) return 0; //check if this is a dummy point
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var series = data[d.series],
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point = series.values[i];
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dispatch.elementClick({
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point: point,
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series: series,
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pos: [x(getX(point, i)) + margin.left, y(getY(point, i)) + margin.top],
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seriesIndex: d.series,
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pointIndex: i
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});
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})
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.on('mouseover', function(d,i) {
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if (needsUpdate || !data[d.series]) return 0; //check if this is a dummy point
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var series = data[d.series],
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point = series.values[i];
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dispatch.elementMouseover({
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point: point,
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series: series,
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pos: [x(getX(point, i)) + margin.left, y(getY(point, i)) + margin.top],
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seriesIndex: d.series,
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pointIndex: i
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});
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})
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.on('mouseout', function(d,i) {
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if (needsUpdate || !data[d.series]) return 0; //check if this is a dummy point
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var series = data[d.series],
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point = series.values[i];
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dispatch.elementMouseout({
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point: point,
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series: series,
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seriesIndex: d.series,
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pointIndex: i
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});
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});
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}
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needsUpdate = false;
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}
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needsUpdate = true;
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var groups = wrap.select('.nv-groups').selectAll('.nv-group')
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.data(function(d) { return d }, function(d) { return d.key });
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groups.enter().append('g')
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.style('stroke-opacity', 1e-6)
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.style('fill-opacity', 1e-6);
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groups.exit()
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.remove();
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groups
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.attr('class', function(d,i) { return 'nv-group nv-series-' + i })
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.classed('hover', function(d) { return d.hover });
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groups
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.transition()
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.style('fill', function(d,i) { return color(d, i) })
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.style('stroke', function(d,i) { return color(d, i) })
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.style('stroke-opacity', 1)
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.style('fill-opacity', .5);
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if (onlyCircles) {
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var points = groups.selectAll('circle.nv-point')
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.data(function(d) { return d.values }, pointKey);
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points.enter().append('circle')
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.style('fill', function (d,i) { return d.color })
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.style('stroke', function (d,i) { return d.color })
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.attr('cx', function(d,i) { return nv.utils.NaNtoZero(x0(getX(d,i))) })
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.attr('cy', function(d,i) { return nv.utils.NaNtoZero(y0(getY(d,i))) })
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.attr('r', function(d,i) { return Math.sqrt(z(getSize(d,i))/Math.PI) });
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points.exit().remove();
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groups.exit().selectAll('path.nv-point').transition()
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.attr('cx', function(d,i) { return nv.utils.NaNtoZero(x(getX(d,i))) })
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.attr('cy', function(d,i) { return nv.utils.NaNtoZero(y(getY(d,i))) })
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.remove();
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points.each(function(d,i) {
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d3.select(this)
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.classed('nv-point', true)
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.classed('nv-point-' + i, true)
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.classed('hover',false)
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;
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});
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points.transition()
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.attr('cx', function(d,i) { return nv.utils.NaNtoZero(x(getX(d,i))) })
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.attr('cy', function(d,i) { return nv.utils.NaNtoZero(y(getY(d,i))) })
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.attr('r', function(d,i) { return Math.sqrt(z(getSize(d,i))/Math.PI) });
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} else {
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var points = groups.selectAll('path.nv-point')
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.data(function(d) { return d.values });
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points.enter().append('path')
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.style('fill', function (d,i) { return d.color })
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.style('stroke', function (d,i) { return d.color })
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.attr('transform', function(d,i) {
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return 'translate(' + x0(getX(d,i)) + ',' + y0(getY(d,i)) + ')'
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})
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.attr('d',
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d3.svg.symbol()
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.type(getShape)
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.size(function(d,i) { return z(getSize(d,i)) })
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);
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points.exit().remove();
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groups.exit().selectAll('path.nv-point')
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.transition()
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.attr('transform', function(d,i) {
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return 'translate(' + x(getX(d,i)) + ',' + y(getY(d,i)) + ')'
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})
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.remove();
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points.each(function(d,i) {
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d3.select(this)
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.classed('nv-point', true)
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.classed('nv-point-' + i, true)
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.classed('hover',false)
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;
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});
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points.transition()
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.attr('transform', function(d,i) {
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//nv.log(d,i,getX(d,i), x(getX(d,i)));
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return 'translate(' + x(getX(d,i)) + ',' + y(getY(d,i)) + ')'
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})
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.attr('d',
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d3.svg.symbol()
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.type(getShape)
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.size(function(d,i) { return z(getSize(d,i)) })
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);
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}
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// Delay updating the invisible interactive layer for smoother animation
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clearTimeout(timeoutID); // stop repeat calls to updateInteractiveLayer
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timeoutID = setTimeout(updateInteractiveLayer, 300);
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//updateInteractiveLayer();
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//store old scales for use in transitions on update
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x0 = x.copy();
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y0 = y.copy();
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z0 = z.copy();
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});
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return chart;
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}
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//============================================================
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// Event Handling/Dispatching (out of chart's scope)
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//------------------------------------------------------------
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chart.clearHighlights = function() {
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//Remove the 'hover' class from all highlighted points.
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d3.selectAll(".nv-chart-" + id + " .nv-point.hover").classed("hover",false);
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};
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chart.highlightPoint = function(seriesIndex,pointIndex,isHoverOver) {
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d3.select(".nv-chart-" + id + " .nv-series-" + seriesIndex + " .nv-point-" + pointIndex)
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.classed("hover",isHoverOver);
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};
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dispatch.on('elementMouseover.point', function(d) {
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if (interactive) chart.highlightPoint(d.seriesIndex,d.pointIndex,true);
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});
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dispatch.on('elementMouseout.point', function(d) {
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if (interactive) chart.highlightPoint(d.seriesIndex,d.pointIndex,false);
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});
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//============================================================
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//============================================================
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// Expose Public Variables
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//------------------------------------------------------------
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chart.dispatch = dispatch;
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chart.options = nv.utils.optionsFunc.bind(chart);
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chart.x = function(_) {
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if (!arguments.length) return getX;
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getX = d3.functor(_);
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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 = d3.functor(_);
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return chart;
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};
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|
|
|
chart.size = function(_) {
|
|
if (!arguments.length) return getSize;
|
|
getSize = d3.functor(_);
|
|
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.zScale = function(_) {
|
|
if (!arguments.length) return z;
|
|
z = _;
|
|
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.sizeDomain = function(_) {
|
|
if (!arguments.length) return sizeDomain;
|
|
sizeDomain = _;
|
|
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.sizeRange = function(_) {
|
|
if (!arguments.length) return sizeRange;
|
|
sizeRange = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.forceX = function(_) {
|
|
if (!arguments.length) return forceX;
|
|
forceX = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.forceY = function(_) {
|
|
if (!arguments.length) return forceY;
|
|
forceY = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.forceSize = function(_) {
|
|
if (!arguments.length) return forceSize;
|
|
forceSize = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.interactive = function(_) {
|
|
if (!arguments.length) return interactive;
|
|
interactive = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.pointKey = function(_) {
|
|
if (!arguments.length) return pointKey;
|
|
pointKey = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.pointActive = function(_) {
|
|
if (!arguments.length) return pointActive;
|
|
pointActive = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.padData = function(_) {
|
|
if (!arguments.length) return padData;
|
|
padData = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.padDataOuter = function(_) {
|
|
if (!arguments.length) return padDataOuter;
|
|
padDataOuter = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.clipEdge = function(_) {
|
|
if (!arguments.length) return clipEdge;
|
|
clipEdge = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.clipVoronoi= function(_) {
|
|
if (!arguments.length) return clipVoronoi;
|
|
clipVoronoi = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.useVoronoi= function(_) {
|
|
if (!arguments.length) return useVoronoi;
|
|
useVoronoi = _;
|
|
if (useVoronoi === false) {
|
|
clipVoronoi = false;
|
|
}
|
|
return chart;
|
|
};
|
|
|
|
chart.clipRadius = function(_) {
|
|
if (!arguments.length) return clipRadius;
|
|
clipRadius = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.color = function(_) {
|
|
if (!arguments.length) return color;
|
|
color = nv.utils.getColor(_);
|
|
return chart;
|
|
};
|
|
|
|
chart.shape = function(_) {
|
|
if (!arguments.length) return getShape;
|
|
getShape = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.onlyCircles = function(_) {
|
|
if (!arguments.length) return onlyCircles;
|
|
onlyCircles = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.id = function(_) {
|
|
if (!arguments.length) return id;
|
|
id = _;
|
|
return chart;
|
|
};
|
|
|
|
chart.singlePoint = function(_) {
|
|
if (!arguments.length) return singlePoint;
|
|
singlePoint = _;
|
|
return chart;
|
|
};
|
|
|
|
//============================================================
|
|
|
|
|
|
return chart;
|
|
}
|