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334 lines
9.5 KiB
JavaScript
334 lines
9.5 KiB
JavaScript
/* eslint no-param-reassign: [2, {"props": false}] */
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/* eslint no-use-before-define: ["error", { "functions": false }] */
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import d3 from 'd3';
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import {
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d3TimeFormatPreset,
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} from '../javascripts/modules/utils';
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import { getColorFromScheme } from '../javascripts/modules/colors';
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import './partition.css';
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d3.hierarchy = require('d3-hierarchy').hierarchy;
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d3.partition = require('d3-hierarchy').partition;
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function init(root) {
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// Compute dx, dy, x, y for each node and
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// return an array of nodes in breadth-first order
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const flat = [];
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const dy = 1.0 / (root.height + 1);
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let prev = null;
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root.each((n) => {
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n.y = dy * n.depth;
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n.dy = dy;
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if (!n.parent) {
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n.x = 0;
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n.dx = 1;
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} else {
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n.x = prev.depth === n.parent.depth ? 0 : prev.x + prev.dx;
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n.dx = n.weight / n.parent.sum * n.parent.dx;
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}
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prev = n;
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flat.push(n);
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});
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return flat;
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}
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// This vis is based on
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// http://mbostock.github.io/d3/talk/20111018/partition.html
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function partitionVis(slice, payload) {
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const data = payload.data;
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const fd = slice.formData;
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const div = d3.select(slice.selector);
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const metrics = fd.metrics || [];
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// Chart options
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const logScale = fd.log_scale || false;
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const chartType = fd.time_series_option || 'not_time';
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const hasTime = ['adv_anal', 'time_series'].indexOf(chartType) >= 0;
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const format = d3.format(fd.number_format);
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const timeFormat = d3TimeFormatPreset(fd.date_time_format);
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div.selectAll('*').remove();
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d3.selectAll('.nvtooltip').remove();
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const tooltip = d3
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.select('body')
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.append('div')
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.attr('class', 'nvtooltip')
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.style('opacity', 0)
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.style('top', 0)
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.style('left', 0)
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.style('position', 'fixed');
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function drawVis(i, dat) {
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const datum = dat[i];
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const w = slice.width();
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const h = slice.height() / data.length;
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const x = d3.scale.linear().range([0, w]);
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const y = d3.scale.linear().range([0, h]);
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const viz = div
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.append('div')
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.attr('class', 'chart')
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.style('width', w + 'px')
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.style('height', h + 'px')
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.append('svg:svg')
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.attr('width', w)
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.attr('height', h);
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// Add padding between multiple visualizations
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if (i !== data.length - 1 && data.length > 1) {
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viz.style('padding-bottom', '3px');
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}
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if (i !== 0 && data.length > 1) {
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viz.style('padding-top', '3px');
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}
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const root = d3.hierarchy(datum);
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function hasDateNode(n) {
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return metrics.indexOf(n.data.name) >= 0 && hasTime;
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}
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// node.name is the metric/group name
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// node.disp is the display value
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// node.value determines sorting order
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// node.weight determines partition height
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// node.sum is the sum of children weights
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root.eachAfter((n) => {
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n.disp = n.data.val;
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n.value = n.disp < 0 ? -n.disp : n.disp;
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n.weight = n.value;
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n.name = n.data.name;
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// If the parent is a metric and we still have
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// the time column, perform a date-time format
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if (n.parent && hasDateNode(n.parent)) {
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// Format timestamp values
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n.weight = fd.equal_date_size ? 1 : n.value;
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n.value = n.name;
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n.name = timeFormat(n.name);
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}
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if (logScale) n.weight = Math.log(n.weight + 1);
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n.disp = n.disp && !isNaN(n.disp) && isFinite(n.disp) ? format(n.disp) : '';
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});
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// Perform sort by weight
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root.sort((a, b) => {
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const v = b.value - a.value;
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if (v === 0) {
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return b.name > a.name ? 1 : -1;
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}
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return v;
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});
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// Prune data based on partition limit and threshold
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// both are applied at the same time
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if (fd.partition_threshold && fd.partition_threshold >= 0) {
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// Compute weight sums as we go
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root.each((n) => {
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n.sum = n.children ? n.children.reduce((a, v) => a + v.weight, 0) || 1 : 1;
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if (n.children) {
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// Dates are not ordered by weight
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if (hasDateNode(n)) {
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if (fd.equal_date_size) {
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return;
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}
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const removeIndices = [];
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// Keep at least one child
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for (let j = 1; j < n.children.length; j++) {
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if (n.children[j].weight / n.sum < fd.partition_threshold) {
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removeIndices.push(j);
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}
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}
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for (let j = removeIndices.length - 1; j >= 0; j--) {
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n.children.splice(removeIndices[j], 1);
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}
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} else {
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// Find first child that falls below the threshold
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let j;
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for (j = 1; j < n.children.length; j++) {
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if (n.children[j].weight / n.sum < fd.partition_threshold) {
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break;
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}
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}
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n.children = n.children.slice(0, j);
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}
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}
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});
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}
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if (fd.partition_limit && fd.partition_limit >= 0) {
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root.each((n) => {
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if (n.children && n.children.length > fd.partition_limit) {
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if (!hasDateNode(n)) {
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n.children = n.children.slice(0, fd.partition_limit);
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}
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}
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});
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}
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// Compute final weight sums
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root.eachAfter((n) => {
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n.sum = n.children ? n.children.reduce((a, v) => a + v.weight, 0) || 1 : 1;
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});
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const verboseMap = slice.datasource.verbose_map;
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function getCategory(depth) {
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if (!depth) {
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return 'Metric';
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}
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if (hasTime && depth === 1) {
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return 'Date';
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}
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const col = fd.groupby[depth - (hasTime ? 2 : 1)];
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return verboseMap[col] || col;
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}
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function getAncestors(d) {
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const ancestors = [d];
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let node = d;
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while (node.parent) {
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ancestors.push(node.parent);
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node = node.parent;
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}
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return ancestors;
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}
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function positionAndPopulate(tip, d) {
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let t = '<table>';
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if (!fd.rich_tooltip) {
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t += (
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'<thead><tr><td colspan="3">' +
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`<strong class='x-value'>${getCategory(d.depth)}</strong>` +
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'</td></tr></thead><tbody>'
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);
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t += (
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'<tr class="emph">' +
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'<td class="legend-color-guide" style="opacity: 0.75">' +
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`<div style='border: thin solid grey; background-color: ${d.color};'` +
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'></div>' +
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'</td>' +
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`<td>${d.name}</td>` +
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`<td>${d.disp}</td>` +
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'</tr>'
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);
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} else {
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const nodes = getAncestors(d);
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nodes.forEach((n) => {
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const atNode = n.depth === d.depth;
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t += '<tbody>';
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t += (
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`<tr class='${atNode ? 'emph' : ''}'>` +
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`<td class='legend-color-guide' style='opacity: ${atNode ? '1' : '0.75'}'>` +
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'<div ' +
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`style='border: 2px solid ${atNode ? 'black' : 'transparent'};` +
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`background-color: ${n.color};'` +
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'></div>' +
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'</td>' +
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`<td>${n.name}</td>` +
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`<td>${n.disp}</td>` +
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`<td>${getCategory(n.depth)}</td>` +
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'</tr>'
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);
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});
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}
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t += '</tbody></table>';
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tip.html(t)
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.style('left', (d3.event.pageX + 13) + 'px')
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.style('top', (d3.event.pageY - 10) + 'px');
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}
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const g = viz
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.selectAll('g')
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.data(init(root))
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.enter()
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.append('svg:g')
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.attr('transform', d => `translate(${x(d.y)},${y(d.x)})`)
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.on('click', click)
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.on('mouseover', (d) => {
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tooltip
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.interrupt()
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.transition()
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.duration(100)
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.style('opacity', 0.9);
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positionAndPopulate(tooltip, d);
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})
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.on('mousemove', (d) => {
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positionAndPopulate(tooltip, d);
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})
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.on('mouseout', () => {
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tooltip
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.interrupt()
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.transition()
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.duration(250)
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.style('opacity', 0);
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});
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let kx = w / root.dx;
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let ky = h / 1;
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g.append('svg:rect')
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.attr('width', root.dy * kx)
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.attr('height', d => d.dx * ky);
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g.append('svg:text')
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.attr('transform', transform)
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.attr('dy', '0.35em')
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.style('opacity', d => d.dx * ky > 12 ? 1 : 0)
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.text((d) => {
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if (!d.disp) {
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return d.name;
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}
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return `${d.name}: ${d.disp}`;
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});
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// Apply color scheme
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g.selectAll('rect')
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.style('fill', (d) => {
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d.color = getColorFromScheme(d.name, fd.color_scheme);
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return d.color;
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});
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// Zoom out when clicking outside vis
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// d3.select(window)
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// .on('click', () => click(root));
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// Keep text centered in its division
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function transform(d) {
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return `translate(8,${d.dx * ky / 2})`;
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}
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// When clicking a subdivision, the vis will zoom in to it
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function click(d) {
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if (!d.children) {
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if (d.parent) {
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// Clicking on the rightmost level should zoom in
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return click(d.parent);
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}
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return false;
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}
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kx = (d.y ? w - 40 : w) / (1 - d.y);
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ky = h / d.dx;
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x.domain([d.y, 1]).range([d.y ? 40 : 0, w]);
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y.domain([d.x, d.x + d.dx]);
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const t = g
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.transition()
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.duration(d3.event.altKey ? 7500 : 750)
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.attr('transform', nd => `translate(${x(nd.y)},${y(nd.x)})`);
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t.select('rect')
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.attr('width', d.dy * kx)
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.attr('height', nd => nd.dx * ky);
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t.select('text')
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.attr('transform', transform)
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.style('opacity', nd => nd.dx * ky > 12 ? 1 : 0);
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d3.event.stopPropagation();
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return true;
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}
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}
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for (let i = 0; i < data.length; i++) {
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drawVis(i, data);
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}
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}
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module.exports = partitionVis;
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