blob: a91611ce007bf2c8a954b8e662d633c8cb25ed40 [file] [log] [blame]
/* eslint no-param-reassign: [2, {"props": false}] */
/* eslint no-use-before-define: ["error", { "functions": false }] */
import d3 from 'd3';
import {
d3TimeFormatPreset,
} from '../javascripts/modules/utils';
import { getColorFromScheme } from '../javascripts/modules/colors';
import './partition.css';
d3.hierarchy = require('d3-hierarchy').hierarchy;
d3.partition = require('d3-hierarchy').partition;
function init(root) {
// Compute dx, dy, x, y for each node and
// return an array of nodes in breadth-first order
const flat = [];
const dy = 1.0 / (root.height + 1);
let prev = null;
root.each((n) => {
n.y = dy * n.depth;
n.dy = dy;
if (!n.parent) {
n.x = 0;
n.dx = 1;
} else {
n.x = prev.depth === n.parent.depth ? 0 : prev.x + prev.dx;
n.dx = n.weight / n.parent.sum * n.parent.dx;
}
prev = n;
flat.push(n);
});
return flat;
}
// This vis is based on
// http://mbostock.github.io/d3/talk/20111018/partition.html
function partitionVis(slice, payload) {
const data = payload.data;
const fd = slice.formData;
const div = d3.select(slice.selector);
const metrics = fd.metrics || [];
// Chart options
const logScale = fd.log_scale || false;
const chartType = fd.time_series_option || 'not_time';
const hasTime = ['adv_anal', 'time_series'].indexOf(chartType) >= 0;
const format = d3.format(fd.number_format);
const timeFormat = d3TimeFormatPreset(fd.date_time_format);
div.selectAll('*').remove();
d3.selectAll('.nvtooltip').remove();
const tooltip = d3
.select('body')
.append('div')
.attr('class', 'nvtooltip')
.style('opacity', 0)
.style('top', 0)
.style('left', 0)
.style('position', 'fixed');
function drawVis(i, dat) {
const datum = dat[i];
const w = slice.width();
const h = slice.height() / data.length;
const x = d3.scale.linear().range([0, w]);
const y = d3.scale.linear().range([0, h]);
const viz = div
.append('div')
.attr('class', 'chart')
.style('width', w + 'px')
.style('height', h + 'px')
.append('svg:svg')
.attr('width', w)
.attr('height', h);
// Add padding between multiple visualizations
if (i !== data.length - 1 && data.length > 1) {
viz.style('padding-bottom', '3px');
}
if (i !== 0 && data.length > 1) {
viz.style('padding-top', '3px');
}
const root = d3.hierarchy(datum);
function hasDateNode(n) {
return metrics.indexOf(n.data.name) >= 0 && hasTime;
}
// node.name is the metric/group name
// node.disp is the display value
// node.value determines sorting order
// node.weight determines partition height
// node.sum is the sum of children weights
root.eachAfter((n) => {
n.disp = n.data.val;
n.value = n.disp < 0 ? -n.disp : n.disp;
n.weight = n.value;
n.name = n.data.name;
// If the parent is a metric and we still have
// the time column, perform a date-time format
if (n.parent && hasDateNode(n.parent)) {
// Format timestamp values
n.weight = fd.equal_date_size ? 1 : n.value;
n.value = n.name;
n.name = timeFormat(n.name);
}
if (logScale) n.weight = Math.log(n.weight + 1);
n.disp = n.disp && !isNaN(n.disp) && isFinite(n.disp) ? format(n.disp) : '';
});
// Perform sort by weight
root.sort((a, b) => {
const v = b.value - a.value;
if (v === 0) {
return b.name > a.name ? 1 : -1;
}
return v;
});
// Prune data based on partition limit and threshold
// both are applied at the same time
if (fd.partition_threshold && fd.partition_threshold >= 0) {
// Compute weight sums as we go
root.each((n) => {
n.sum = n.children ? n.children.reduce((a, v) => a + v.weight, 0) || 1 : 1;
if (n.children) {
// Dates are not ordered by weight
if (hasDateNode(n)) {
if (fd.equal_date_size) {
return;
}
const removeIndices = [];
// Keep at least one child
for (let j = 1; j < n.children.length; j++) {
if (n.children[j].weight / n.sum < fd.partition_threshold) {
removeIndices.push(j);
}
}
for (let j = removeIndices.length - 1; j >= 0; j--) {
n.children.splice(removeIndices[j], 1);
}
} else {
// Find first child that falls below the threshold
let j;
for (j = 1; j < n.children.length; j++) {
if (n.children[j].weight / n.sum < fd.partition_threshold) {
break;
}
}
n.children = n.children.slice(0, j);
}
}
});
}
if (fd.partition_limit && fd.partition_limit >= 0) {
root.each((n) => {
if (n.children && n.children.length > fd.partition_limit) {
if (!hasDateNode(n)) {
n.children = n.children.slice(0, fd.partition_limit);
}
}
});
}
// Compute final weight sums
root.eachAfter((n) => {
n.sum = n.children ? n.children.reduce((a, v) => a + v.weight, 0) || 1 : 1;
});
const verboseMap = slice.datasource.verbose_map;
function getCategory(depth) {
if (!depth) {
return 'Metric';
}
if (hasTime && depth === 1) {
return 'Date';
}
const col = fd.groupby[depth - (hasTime ? 2 : 1)];
return verboseMap[col] || col;
}
function getAncestors(d) {
const ancestors = [d];
let node = d;
while (node.parent) {
ancestors.push(node.parent);
node = node.parent;
}
return ancestors;
}
function positionAndPopulate(tip, d) {
let t = '<table>';
if (!fd.rich_tooltip) {
t += (
'<thead><tr><td colspan="3">' +
`<strong class='x-value'>${getCategory(d.depth)}</strong>` +
'</td></tr></thead><tbody>'
);
t += (
'<tr class="emph">' +
'<td class="legend-color-guide" style="opacity: 0.75">' +
`<div style='border: thin solid grey; background-color: ${d.color};'` +
'></div>' +
'</td>' +
`<td>${d.name}</td>` +
`<td>${d.disp}</td>` +
'</tr>'
);
} else {
const nodes = getAncestors(d);
nodes.forEach((n) => {
const atNode = n.depth === d.depth;
t += '<tbody>';
t += (
`<tr class='${atNode ? 'emph' : ''}'>` +
`<td class='legend-color-guide' style='opacity: ${atNode ? '1' : '0.75'}'>` +
'<div ' +
`style='border: 2px solid ${atNode ? 'black' : 'transparent'};` +
`background-color: ${n.color};'` +
'></div>' +
'</td>' +
`<td>${n.name}</td>` +
`<td>${n.disp}</td>` +
`<td>${getCategory(n.depth)}</td>` +
'</tr>'
);
});
}
t += '</tbody></table>';
tip.html(t)
.style('left', (d3.event.pageX + 13) + 'px')
.style('top', (d3.event.pageY - 10) + 'px');
}
const g = viz
.selectAll('g')
.data(init(root))
.enter()
.append('svg:g')
.attr('transform', d => `translate(${x(d.y)},${y(d.x)})`)
.on('click', click)
.on('mouseover', (d) => {
tooltip
.interrupt()
.transition()
.duration(100)
.style('opacity', 0.9);
positionAndPopulate(tooltip, d);
})
.on('mousemove', (d) => {
positionAndPopulate(tooltip, d);
})
.on('mouseout', () => {
tooltip
.interrupt()
.transition()
.duration(250)
.style('opacity', 0);
});
let kx = w / root.dx;
let ky = h / 1;
g.append('svg:rect')
.attr('width', root.dy * kx)
.attr('height', d => d.dx * ky);
g.append('svg:text')
.attr('transform', transform)
.attr('dy', '0.35em')
.style('opacity', d => d.dx * ky > 12 ? 1 : 0)
.text((d) => {
if (!d.disp) {
return d.name;
}
return `${d.name}: ${d.disp}`;
});
// Apply color scheme
g.selectAll('rect')
.style('fill', (d) => {
d.color = getColorFromScheme(d.name, fd.color_scheme);
return d.color;
});
// Zoom out when clicking outside vis
// d3.select(window)
// .on('click', () => click(root));
// Keep text centered in its division
function transform(d) {
return `translate(8,${d.dx * ky / 2})`;
}
// When clicking a subdivision, the vis will zoom in to it
function click(d) {
if (!d.children) {
if (d.parent) {
// Clicking on the rightmost level should zoom in
return click(d.parent);
}
return false;
}
kx = (d.y ? w - 40 : w) / (1 - d.y);
ky = h / d.dx;
x.domain([d.y, 1]).range([d.y ? 40 : 0, w]);
y.domain([d.x, d.x + d.dx]);
const t = g
.transition()
.duration(d3.event.altKey ? 7500 : 750)
.attr('transform', nd => `translate(${x(nd.y)},${y(nd.x)})`);
t.select('rect')
.attr('width', d.dy * kx)
.attr('height', nd => nd.dx * ky);
t.select('text')
.attr('transform', transform)
.style('opacity', nd => nd.dx * ky > 12 ? 1 : 0);
d3.event.stopPropagation();
return true;
}
}
for (let i = 0; i < data.length; i++) {
drawVis(i, data);
}
}
module.exports = partitionVis;