2c:null 2d:["$","title",null,{"children":"🔮Bubble Matrix🔮 Component | Eric Lo | Observable"}] 32:T69e,# 🔮Bubble Matrix🔮 Component A **Bubble Matrix** is a two-dimensional representation of information with the help of sizes and colors. The chart is visualized like a matrix with a finite number of rows and columns. Bubbles within the matrix are categorized by two different colors depending upon the segment in which the data value they represent belongs to. Bubble matrix can be useful in helping users to gauge above or below ranges quickly, as well as spotting the most important values by using the highlight feature. ### Features **Sort:** When you click the label of column or row, the matrix will automatically sort in ascending order. Keep clicking to toggle between ascending, descending, and the original data order. **Adjustable level:** By dragging the slider, you can change the threshold value for segmenting the above/below range, and bubbles reflect the change in real-time. **Highlight:** If you click on a bubble, it gets highlighted with an annotation on the side detailing row, column and value. You can set different rules to highlight unusual values automatically. **Auto-fit:** The bubble radius shrinks along with the available width and height until it reaches 25px then the matrix becomes scrollable. It is very useful when you have too many rows/columns or try to fit the visualization into a limited space. This effect can be simulated by adjusting the width and height using the sliders in the demo below. 33:T991,viewof options = form(html` `)34:Ta00,## API Reference and Source Code * **BubbleMatrix(container)** - Constructs a new instance of BubbleMatrix with default settings. The container is usually a DIV but can be any DOM element as well. * **size([width, height])** - Sets the dimensions to specified width and height and returns this chart. * **options(options)** - Overrides the default options and returns this chart. * options.**numberIsPercentage** - a boolean value that indicates whether the number is percentage. Default is false. * options.**preserveRowOrder** - a boolean value that indicates whether the original order of the row should be preserved (for example: month). Default is false. * options.**preserveColumnOrder** - a boolean value that indicates whether the original order of the column should be preserved. Default is false. * options.**showSlider** - specifies whether the slider is enabled. * options.**sliderCaption** - sets the caption of slider. Default is "Value". * options.**highlightScope** - sets the highlight scope to *"matrix"*, *"byRow"*, *"top"* or *"bottom"*. Default is "matrix". * options.**numberOfTopBottom** - an integer value that indicates the number of bubbles should be highlighted when the **highlightScope** sets to *"top"* or *"bottom"*. Default is 5. * options.**showTooltip** - specifies whether the tooptip is enabled. * options.**showAnnotation** - specifies whether the annotation is enabled. * **colors(colors)** - Overrides the color settings and returns this chart. * colors.**row** - sets the background color of legend. * colors.**above** - sets the color of bubbles which value is above the standard. * colors.**below** - sets the color of bubbles which value is below the standard. * colors.**label** - sets the color of labels. * **columns(columns)** - Specifies the column names for each axis and return this chart. * columns.**row** - sets the column name for row axis. * columns.**column** - sets the column name for column axis. * columns.**value** - sets the column name for value. * **font(font)** - Overrides the default font settings and returns this chart. * font.**fontFamily** - sets the font. * font.**size** - sets the font size of labels. Default is ***9***. * **data(_)** - Sets the dataset and return this chart. * **events(events)** - * events.**onclick** - occurs when click a bubble. * events.**onhover** - occurs when hovers over a bubble. * events.**oncancel** - occurs when pointer leaves a bubble. * **render()** - Renders the visualization and returns this chart.35:Ta711,BubbleMatrix = { // https://github.com/analyzer2004/bubblematrix // Copyright 2021 Eric Lo class BubbleMatrix { constructor(container = document.createElement("DIV")) { this._container = container; this._options = new BubbleMatrixOptions() this.partitions = new Partitions(this); this._dataset = null; this._fieldNames = new FieldNames(); this.chartData = null; this.measures = new Measures(this._getMeasureSvg()); this.scales = new Scales(); this.renderer = new Renderer(this); } get fieldNames() { return this._fieldNames; } size(_) { if (arguments.length) { this.measures.width = _[0]; this.measures.height = _[1]; return this; } else { return [this.measures.width, this.measures.height]; } } colors(_) { if (arguments.length) { this.renderer.colors.row = _.row; this.renderer.colors.above = _.above; this.renderer.colors.below = _.below; this.renderer.colors.label = _.label; return this; } else { return this.renderer.colors; } } margin(_) { if (arguments.length) { this.measures.margin.left = _.left; this.measures.margin.right = _.right; this.measures.margin.top = _.top; this.measures.margin.bottom = _.bottom; return this; } else { return this.measures.margin; } } options(_) { return arguments.length ? (this._options = Object.assign(this._options, _), this) : this._options; } columns(_) { if (arguments.length) { this._fieldNames.column = _.column; this._fieldNames.row = _.row; this._fieldNames.value = _.value; return this; } else { return this._fieldNames; } } font(_) { if (arguments.length) { this.measures.font.family(_.family); this.measures.font.size(_.size); return this; } else { return this.measures.font; } } data(_) { return arguments.length ? (this._dataset = _, this) : this._dataset; } events(_) { if (arguments.length) { this.renderer.rows.onclick = _.onclick; this.renderer.rows.onhover = _.onhover; this.renderer.rows.oncancel = _.oncancel; return this; } else { return { onclick: this.renderer.onclick, onhover: this.renderer.onhover, oncancel: this.renderer.oncancel } } } render() { const options = this._options; const detached = !this._container.isConnected; if (detached) document.body.append(this._container); this.chartData = new ChartData(this._dataset, this._fieldNames); this.chartData.numberIsPercentage = options.numberIsPercentage; this.chartData.preserveColumnOrder = options.preserveColumnOrder; this.chartData.preserveRowOrder = options.preserveRowOrder; this.chartData.numOfTopBottom = options.numberOfTopBottom; this.chartData.process(); this.measures.initialize(this.chartData, options.showSlider); this.scales.initialize(this); this.partitions.initialize(); this._container.appendChild(this.partitions.chartArea); this.renderer.rows.highlight = Highlight[options.highlightScope]; this.renderer.rows.showTooltip = options.showTooltip; this.renderer.rows.showAnnotation = options.showAnnotation; this.renderer.render(); if (options.showSlider) { const slider = new Slider(this, options.sliderCaption); slider.render(); } this.partitions.adjustScrollableBlocks(); if (detached) { this._container.remove(); return this._container; } return this; } _getMeasureSvg() { const svg = d3.select(this._container) .append("svg") .attr("width", 0) .attr("height", 0) .style("position", "absolute") .style("visibility", "hidden"); svg.append("text"); return svg; } } class BubbleMatrixOptions { constructor() { this.numberIsPercentage = false; this.preserveRowOrder = false; this.preserveColumnOrder = false; this.showSlider = true; this.sliderCaption = "Value"; this.highlightScope = "matrix"; // "matrix", "byRow", "topBottom" this.numberOfTopBottom = 5; this.showTooltip = true; this.showAnnotation = true; } } class ChartData { constructor(dataset, fieldNames) { this._dataset = dataset; this._fieldNames = fieldNames; this.numberIsPercentage = false; this.preserveColumnOrder = false; this.preserveRowOrder = false; this.columns = null; this.rows = null this.level = 0; this.defaultLevel = 0; this.average = 0; this.min = 0; this.max = 0; this.numOfTopBottom = 5; } resetColumns(exception) { this.columns.forEach(c => { if (c !== exception) c.order = SortOrder.none; }); } resetRows(exception) { this.rows.forEach(r => { if (r !== exception) r.order = SortOrder.none; }); } process() { const names = this._fieldNames; const rows = d3.group(this._dataset, d => d[names.row]); this.columns = [...new Set(this._dataset.map(d => d[names.column]))] .map((d, i) => new Column(d, i)); if (!this.preserveColumnOrder) { this.columns.sort((a, b) => a.name.localeCompare(b.name)); this.columns.forEach((c, i) => c.position = i); } const keys = [...rows.keys()]; if (!this.preserveRowOrder) keys.sort((a, b) => a.localeCompare(b)); this.rows = keys.map((key, i) => { const srcRow = rows.get(key); const cells = this.columns.map(col => { const c = srcRow.find(d => d[names.column] === col.name); return new Cell(key, col.name, c ? +c[names.value] : null); }); const row = new Row(key, i, cells); row.markBounds(); return row; }); const cells = this.rows .flatMap(r => r.cells) .filter(c => c.value) .sort((a, b) => a.value - b.value); cells[0].flag |= CellFlag.min; cells[cells.length - 1].flag |= CellFlag.max; cells.slice(0, this.numOfTopBottom).forEach(cell => cell.flag |= CellFlag.bottomGroup); cells.slice(-this.numOfTopBottom).forEach(cell => cell.flag |= CellFlag.topGroup); const total = cells.reduce((a, b) => a + b.value, 0); this.level = this.defaultLevel = this.average = total / cells.length; this.min = cells[0].value; this.max = cells[cells.length - 1].value; } } class Column { constructor(name, position) { this.name = name; this.position = position; this.order = SortOrder.none; } } class Row { constructor(name, position, cells) { this.name = name; this.position = position; this.order = SortOrder.none; this.cells = cells; } markBounds() { const sorted = [...this.cells].filter(c => c.value).sort((a, b) => a.value - b.value); sorted[0].flag |= CellFlag.rowMin; sorted[sorted.length - 1].flag |= CellFlag.rowMax; } } class Cell { constructor(row, column, value) { this.row = row; this.column = column; this.value = value; this.flag = CellFlag.unspecified; } } class FieldNames { constructor(column, row, value) { this.column = column; this.row = row; this.value = value; } } class SortOrder { static get none() { return 0; } static get ascending() { return 1; } static get descending() { return 2; } } class CellFlag { static get unspecified() { return 0; } static get min() { return 1; } static get max() { return 2; } static get rowMin() { return 4; } static get rowMax() { return 8; } static get bottomGroup() { return 16; } static get topGroup() { return 32; } } class InfoBox { constructor(svg, font, fill, opacity, stroke) { this._svg = svg; this._font = font; this._charBox = null; this._box = this._initBox(fill, opacity, stroke); this.left = 0; this.top = 0; this.getBBox = null; this.calcTextWidth = null; this.calcPosition = null; } get box() { return this._box; } get offset() { return 10; } show(e, content, x, y) { if (!this._charBox) this._charBox = this.getBBox("M"); const that = this, space = 1.4, width = this._calcWidth(content); this._box .style("visibility", "visible") .select("rect") .attr("width", width + 10) .attr("height", `${content.length * space + 0.5}em`); drawTexts("backtext", "white", 3); drawTexts("foretext"); this.move(e, x, y); function drawTexts(className, stroke, strokeWidth) { that._box .selectAll("." + className) .data(content) .join( enter => { enter.append("text") .attr("class", className) .attr("dy", (d, i) => `${space * i + 1}em`) .attr("stroke", stroke) .attr("stroke-width", strokeWidth) .text(d => d); }, update => update.text(d => d), exit => exit.remove() ); } } move(e, x, y) { if (this._box) { const converted = x && y ? new DOMPoint(x, y) : this._convertCoordinate(e, this._svg), box = this._box.node().getBBox(); const { left, top } = this.calcPosition(converted, box); this.left = left + this.offset; this.top = top + this.offset; this._box.attr("transform", `translate(${this.left},${this.top})`); } } hide() { if (this._box) this._box.style("visibility", "hidden"); } _initBox(fill, opacity, stroke) { const box = this._svg .append("g") .attr("fill", "black") .call(g => { g.append("rect") .attr("opacity", opacity) .attr("stroke", stroke) .attr("stroke-width", 0.5) .attr("rx", 4).attr("ry", 4) .attr("x", -5).attr("y", -5) .attr("fill", fill); }); this._font.applyTo(box); return box; } _calcWidth(strs) { let max = 0; strs.forEach(s => { const len = this.calcTextWidth(s); if (len > max) max = len; }); return max; } _convertCoordinate(e, g) { const p = this._svg.node().createSVGPoint() p.x = e.clientX; p.y = e.clientY; return p.matrixTransform(g.node().getScreenCTM().inverse()); } } class Annotation extends InfoBox { constructor(svg, font, fill, opacity, stroke) { super(svg, font, fill, opacity, stroke); this._pointer = null; } show(e, content, x, y, r, color) { super.show(e, content, x, y); const b = this.box.node().getBBox(); this.move(e, x + r - this.offset, y + r - this.offset); const shift = this.offset / 2; let left = this.left, top = this.top, tx = left - shift, ty = top - shift, sx = tx + 30, sy = ty + b.height; if (left < x) { tx = x - r - shift; sx = tx - 30; left = x - r - b.width; } if (top < y) { ty = y - r - shift; sy = ty - b.height; top = y - r - b.height; } this.box.attr("transform", `translate(${left},${top})`); this._removePointer(); this._pointer = this._svg.append("path") .attr("fill", "none") .attr("stroke", color) .attr("stroke-width", 2) .attr("stroke-dasharray", "2") .attr("d", `M ${x} ${y} L ${tx} ${ty} L ${tx} ${sy} L ${sx} ${sy}`); } hide() { super.hide(); this._removePointer(); } _removePointer() { if (this._pointer) { this._pointer.remove(); this._pointer = null; } } } class Measures { constructor(svg) { this._svg = svg; this.font = new Font(); this.padding = 10; this.margin = { left: 0, right: 0, top: 0, bottom: 0 }; this.width = 0; this.height = 0; this.sliderHeight = 20; this.columnHeight = 0; this.rowWidth = 0; this._minRadius = 25; this.bubbleRadius = 0; this.bubbleDiameter = 0; } initialize(chartData, showSlider) { this._calculateLabels(chartData); this._calculateBubbleRadius(chartData, showSlider); } _calculateLabels(chartData) { const max = (strs, font) => { let max = 0; strs.forEach(str => { const w = this.calculateStringWidth(str, undefined, font); if (w > max) max = w; }); return max; } this.columnHeight = max(chartData.columns.map(c => this.trim(c.name) + "M")); this.rowWidth = this.margin.left + max(chartData.rows.map(r => r.name + "MM"), this.font.clone().weight("bold")); } _calculateBubbleRadius(chartData, showSlider) { const aw = this.width - this.rowWidth, ah = this.height - this.columnHeight - this.padding * 2 - (showSlider ? this.sliderHeight : 0), rc = chartData.rows.length, cc = chartData.columns.length; const r1 = (ah / rc - this.padding) / 2, r2 = aw / cc / 2; if (r1 < r2) { this.bubbleRadius = r1; } else { const total = rc * r2; this.bubbleRadius = r2 > ah ? r2 - (total - ah) / rc / 2 : r2; } if (this.bubbleRadius < this._minRadius) this.bubbleRadius = this._minRadius; this.bubbleDiameter = this.bubbleRadius * 2; } getBBox(str, angle, font) { const f = font ?? this.font; const text = this._svg.select("text"); if (text) { f.applyTo(text); text.text(str); if (angle) text.attr("transform", `rotate(${angle})`); return text.node().getBBox(); } else { return null; } } calculateStringWidth(str, angle, font) { const b = this.getBBox(str, angle, font); return b ? Math.sqrt(b.width * b.width + b.height * b.height) : str.length * this.font.size; } trim(s) { return s.length > 10 ? `${s.substr(0, 10)}...` : s; } } class Font { constructor(family = "", size = "10pt", style = "normal", weight = "normal") { this._family = family; this._size = size; this._style = style; this._weight = weight; } family(_) { return arguments.length ? (this._family = _, this) : this._family; } size(_) { return arguments.length ? (this._size = _, this) : this._size; } style(_) { return arguments.length ? (this._style = _, this) : this._style; } weight(_) { return arguments.length ? (this._weight = _, this) : this._weight; } applyTo(elem) { elem = elem instanceof HTMLElement ? d3.select(elem) : elem; elem.style("font-family", this._family) .style("font-size", isNaN(+this._size) ? this._size : `${this._size}pt`) .style("font-style", this._style) .style("font-weight", this._weight); } clone() { return new Font(this._family, this._size, this._style, this._weight); } } class Partitions { constructor(chart) { this._chart = chart; this.chartArea = this._createDiv(); this.mainBlock = this._createDiv(); this.slider = this._createDiv(); this.columnBlock = this._createDiv(); this.placeHolder = this._createDiv(); this.columns = this._createDiv(); this.matrixBlock = this._createDiv(); this.rows = this._createDiv(); this.matrix = this._createDiv(); } initialize() { this._initStyles(); this._initLayout(); this._adjustSize(); } adjustScrollableBlocks() { const gh = this.matrix.offsetHeight - this.matrix.clientHeight, gw = this.matrix.offsetWidth - this.matrix.clientWidth; if (gh) this.rows.style.height = `${this.rows.clientHeight - gh}px`; if (gw) this.columns.style.width = `${this.columns.clientWidth - gw}px`; } changeFont(font) { this.chartArea.style.font = font.shorthand; } _adjustSize() { const measures = this._chart.measures; this.chartArea.style.height = `${measures.height}px`; if (this._chart.options().showSlider) this.slider.style.height = `${measures.sliderHeight}px`; this.columns.style.height = `${measures.columnHeight}px`; this.columns.style.width = `${measures.width - measures.rowWidth - measures.margin.left}px`; this.placeHolder.style.width = `${measures.rowWidth + measures.margin.left}px`; this.placeHolder.style.height = `${measures.columnHeight}px`; this.rows.style.width = `${measures.rowWidth + measures.margin.left}px`; this.matrix.style.width = `${measures.width + measures.margin.right + measures.rowWidth}px`; } _createDiv() { return document.createElement("div"); } _initStyles() { const measures = this._chart.measures, width = measures.width + measures.margin.left + measures.margin.right; // chartArea let s = this.chartArea.style; s.display = "flex"; s.flexDirection = "column"; s.cursor = "default"; s.userSelect = "none"; measures.font.applyTo(this.chartArea); // mainBlock s = this.mainBlock.style; s.display = "flex"; s.flexDirection = "column"; s.flexGrow = 1; s.height = "1px"; // columnBlock s = this.columnBlock.style; s.textAlign = "left"; s.display = "flex"; s.flexDirection = "row"; s.flexShrink = 0; s.width = "1px"; // placeHolder s = this.placeHolder.style; s.flexShrink = 0; s.backgroundColor = "white"; // columns s = this.columns.style; s.paddingTop = "5px"; s.paddingBottom = "5px"; s.overflow = "hidden"; s.flexShrink = 0; s.width = `${width}px`; // matrixBlock s = this.matrixBlock.style; s.display = "flex"; s.flexDirection = "row"; s.flexGrow = 0; s.width = "1px"; s.overflowY = "auto"; s.textAlign = "left"; s.width = `${width}px`; // rows s = this.rows.style; s.overflow = "hidden"; s.flexShrink = 0; // matrix s = this.matrix.style; s.overflowX = "auto"; this.matrix.onscroll = ev => { this.columns.scrollLeft = this.matrix.scrollLeft; this.rows.scrollTop = this.matrix.scrollTop; } } _initLayout() { this.chartArea.appendChild(this.mainBlock); this.mainBlock.appendChild(this.slider); this.mainBlock.appendChild(this.columnBlock); this.mainBlock.appendChild(this.matrixBlock); this.columnBlock.appendChild(this.placeHolder); this.columnBlock.appendChild(this.columns); this.matrixBlock.appendChild(this.rows); this.matrixBlock.appendChild(this.matrix); } } class Renderer { constructor(chart) { this.chart = chart; this.colors = { row: "#caf0f8", above: "#ffd166", below: "#118ab2", label: "black" }; this.matrix = { svg: null, g: null, og: null, ig: null }; this.columns = new ColumnRenderer(this); this.rows = new RowRenderer(this); this._uuid = `uu${Date.now()}${Math.floor(Math.random() * 10000)}`; } render() { this._initMatrix(); this._renderGradients(); this.columns.render(); this.rows.render(); } _createSvg(container, width, height) { return d3.select(container) .append("svg") .attr("width", width) .attr("height", height); } _transform(x, y) { return `translate(${x},${y})`; } _initMatrix() { const c = this.chart, m = this.matrix; m.svg = this._createSvg(c.partitions.matrix, c.scales.maxX, c.scales.maxY); m.g = m.svg.append("g"); m.og = m.g.append("g"); m.ig = m.svg.append("g").attr("transform", this._transform(0, c.measures.padding / 2)); } uid(id) { return `${this._uuid}_${id}`; } _renderGradients() { const c = this.chart, addGradient = reversed => { this.matrix.g.append("linearGradient") .attr("id", this.uid(reversed ? "descending" : "ascending")) .attr("x1", 0) .attr("x2", c.measures.rowWidth + c.chartData.columns.length * c.measures.bubbleDiameter) .attr("y1", "100%") .attr("y2", "100%") .attr("gradientUnits", "userSpaceOnUse") .call(g => { g.append("stop").attr("stop-color", this.colors.row).attr("stop-opacity", reversed ? 1 : 0).attr("offset", 0); g.append("stop").attr("stop-color", this.colors.row).attr("stop-opacity", reversed ? 0 : 1).attr("offset", 1); }); }; addGradient(false); addGradient(true); } } class PartRenderer { constructor(mainRenderer) { this._mainRenderer = mainRenderer; this.duration = 500; } get chart() { return this._mainRenderer.chart; } get matrix() { return this._mainRenderer.matrix; } get colors() { return this._mainRenderer.colors; } get rows() { return this._mainRenderer.rows; } get columns() { return this._mainRenderer.columns; } uid(id) { return this._mainRenderer.uid(id); } url(id) { return `url(#${id})`; } } class ColumnRenderer extends PartRenderer { constructor(mainRenderer) { super(mainRenderer); this.text = null; this._arrow = null; this.labels = null; this.axis = null; } render() { const c = this.chart; const g = d3.select(c.partitions.columns) .append("svg") .attr("width", c.scales.maxX + c.measures.rowWidth) .attr("height", c.measures.columnHeight) .append("g"); this.labels = this._renderGroups( g, `translate(0,${c.measures.columnHeight})`, "start", g => { this.text = g.append("text") .attr("y", 0) .attr("dy", "0.25em") .attr("transform", "rotate(-90)") .attr("fill", this.colors.label) .text(this._trim.bind(this)) .on("click", this._click.bind(this)); this._arrow = g.append("path") .attr("fill", "#999") .attr("transform", "rotate(-90)"); } ); this.axis = this._renderGroups( this.matrix.og, undefined, "middle", g => { g.append("line") .attr("y1", 0).attr("y2", c.scales.maxY) .attr("stroke-width", 1).attr("stroke", "#8d99ae"); } ); } _renderGroups(g, transform, textAnchor, draw) { const c = this.chart, gg = g.append("g"); if (transform) gg.attr("transform", transform); return gg.selectAll("g") .data(c.chartData.columns) .join("g") .attr("text-anchor", textAnchor) .attr("transform", (d, i) => `translate(${c.scales.x(i) + c.measures.bubbleRadius},0)`) .call(draw); } _trim(d) { return this.chart.measures.trim(d.name); } _click(e, d) { this._sort(d); this._arrow.attr("d", c => { if (d.order !== SortOrder.none && d.name === c.name) { const b = this.chart.measures.getBBox(this._trim(c)), h = b.height / 2 + 1, w = b.width, aw = 5; return d.order === SortOrder.descending ? `M 0 ${h} L ${w} ${h} L ${w} ${h + aw} L 0 ${h}` : `M 0 ${h} L 0 ${h + aw} L ${w} ${h} L 0 ${h}`; } }) } _sort(d) { const that = this, data = this.chart.chartData, columns = data.columns, cIndex = columns.indexOf(d), sorted = data.rows.map(d => ({ row: d, column: d.cells[cIndex] })); data.resetColumns(d); if (d.order === SortOrder.none) d.order = SortOrder.ascending; else if (d.order === SortOrder.ascending) d.order = SortOrder.descending; else d.order = SortOrder.none; if (d.order === SortOrder.ascending) { sorted.sort((a, b) => a.column.value - b.column.value); } else if (d.order === SortOrder.descending) { sorted.sort((a, b) => b.column.value - a.column.value); } const unit = this.duration / data.rows.length; sortRows(this.rows.axis); sortRows(this.rows.labels); this.rows.relocateAnnotation(); function sortRows(g) { g.transition() .duration((d, i) => i * unit) .attr("transform", d => { let rIndex = 0; for (let i = 0; i < sorted.length; i++) { if (sorted[i].row === d) { d.position = rIndex = i; break; } } return `translate(0,${that.chart.scales.y(rIndex)})`; }); } } } class RowRenderer extends PartRenderer { constructor(mainRenderer) { super(mainRenderer); this._tooltip = null; this._annotation = null; this.labels = null; this.axis = null; this.highlight = Highlight.matrix; this.showTooltip = true; this.showAnnotation = true; this._labelRects = null; this._bubbleRects = null; this._bubbles = null; this._focused = null; this.onhover = null; this.oncancel = null; this.onclick = null; } get bubbles() { return this._bubbles; } render() { this._initInfoLayer(); const c = this.chart; const g = d3.select(c.partitions.rows) .append("svg") .attr("width", c.measures.rowWidth) .attr("height", c.scales.maxY) .append("g") .attr("transform", `translate(0,${c.measures.padding / 2})`); this.labels = this._renderGroups(g, g => { this._labelRects = this._renderRect(g, 1, c.measures.rowWidth + 10) .on("click", this._click.bind(this)); g.append("text") .attr("font-weight", "bold") .attr("y", c.measures.bubbleRadius) .attr("dx", "1em") .attr("dy", "0.25em") .attr("fill", this.colors.label) .text(d => d.name) .on("click", this._click.bind(this)); }); const rectWidth = c.chartData.columns.length * c.measures.bubbleDiameter; this.axis = this._renderGroups(this.matrix.ig.append("g"), g => { this._bubbleRects = this._renderRect(g, -11, rectWidth + 10); this._bubbles = g.append("g") .selectAll("g") .data(d => d.cells) .join("g") .attr("transform", (d, i) => `translate(${c.scales.x(i) + c.measures.bubbleRadius},0)`) .call(g => { g.append("circle") .attr("class", "bubble") .attr("fill", d => d.value >= c.chartData.average ? this.colors.above : this.colors.below) .attr("stroke-width", 2) .attr("cy", c.measures.bubbleRadius) .attr("r", 0); }) .on("click", this._handleClick.bind(this)) .on("pointerenter", this._handlePointerEnter.bind(this)) .on("pointermove", this._handlePointerMove.bind(this)) .on("pointerleave", this._handlePointerLeave.bind(this)); this._bubbles.selectAll("circle") .transition() .ease(d3.easeBounce) .duration(500) .attr("r", d => d.value ? c.scales.r(d.value) : 0); }); this.highlightBubbles(); } relocateAnnotation(delay = true) { if (this._focused) { const f = () => this._showAnnotation(null, this._focused); this._annotation.hide(); if (delay) { setTimeout(f, this.duration); } else { f(); } } } _handleClick(e, d) { if (this._focused !== d) { this._showAnnotation(e, d); } else { this._annotation.hide(); this._focused = null; } if (this.onclick) this.onclick(e, d); } _showAnnotation(e, d) { const c = this.chart, a = this._annotation, getPosition = (axis, name) => { const obj = axis.find(d => d.name === name); return obj ? obj.position : 0; } if (this.showAnnotation) { const cx = c.scales.x(getPosition(c.chartData.columns, d.column)), cy = c.scales.y(getPosition(c.chartData.rows, d.row)), r = c.scales.r(d.value), color = d.value >= c.chartData.level ? this.colors.above : this.colors.below; this._focused = d; a.hide(); a.show( null, this._getTooltipContent(d), cx + c.measures.bubbleRadius, cy + c.measures.bubbleRadius + c.measures.padding / 2, r, d3.color(color).darker(1)); } } _handlePointerEnter(e, d) { const c = this.chart; if (this.showTooltip) this._tooltip.show(e, this._getTooltipContent(d)); if (this.onhover) this.onhover(e, d); this.columns.axis.select("line").attr("stroke-width", col => col.name === d.column ? 2 : 1); this.columns.text.attr("font-weight", col => col.name === d.column ? "bold" : ""); this._bubbles.filter(b => b === d) .call(g => { g.select(".bubble").attr("transform", "translate(1,-1.5)"); g.insert("circle", "circle") .attr("class", "shadow") .attr("cy", c.measures.bubbleRadius) .attr("r", d => d.value ? c.scales.r(d.value) : 0) .attr("fill", d => { const color = d.value >= c.chartData.level ? this.colors.above : this.colors.below; return d3.color(color).darker(1); }) }); } _handlePointerMove(e) { if (this.showTooltip) this._tooltip.move(e); } _handlePointerLeave(e, d) { if (this.showTooltip) this._tooltip.hide(); if (this.oncancel) this.oncancel(e, d); this.columns.axis.select("line").attr("stroke-width", 1); this.columns.text.attr("font-weight", ""); this._bubbles.filter(b => b === d) .call(g => { g.select(".bubble").attr("transform", ""); g.select(".shadow").remove(); }); } highlightBubbles(update) { const bubbleRadius = this.chart.measures.bubbleRadius; const testByRow = d => this.highlight === Highlight.byRow && ((d.flag & CellFlag.rowMin) === CellFlag.rowMin || (d.flag & CellFlag.rowMax) === CellFlag.rowMax), testByMatrix = d => this.highlight === Highlight.matrix && ((d.flag & CellFlag.min) === CellFlag.min || (d.flag & CellFlag.max) === CellFlag.max), testByTop = d => this.highlight === Highlight.top && ((d.flag & CellFlag.topGroup) === CellFlag.topGroup), testByBottom = d => this.highlight === Highlight.bottom && ((d.flag & CellFlag.bottomGroup) === CellFlag.bottomGroup); const targets = this._bubbles.filter(d => d.value && (testByRow(d) || testByMatrix(d) || testByTop(d) || testByBottom(d))); targets.select("circle") .attr("stroke", d => { const color = d.value >= this.chart.chartData.level ? this.colors.above : this.colors.below; return d3.color(color).darker(0.75); }); if (!update) { targets.append("text") .attr("text-anchor", "middle") .attr("y", d => { const r = this.chart.scales.r(d.value), tl = this.chart.measures.calculateStringWidth(this._formatValue(d.value)); return tl + 5 > r * 2 ? bubbleRadius + r + 12 : bubbleRadius; }) .attr("dy", "0.3em") .attr("fill", this.colors.label) .attr("font-weight", "bold") .text(d => this._formatValue(d.value)); } } _formatValue(v, short = true) { const fmtStr = this.chart.chartData.numberIsPercentage ? ".1%" : short ? ".2s" : ",.2f"; return d3.format(fmtStr)(v); } _initInfoLayer() { const that = this, currFont = this.chart.measures.font; if (this.showAnnotation) { const font = currFont.clone().family("Sans-serif").size("11px").weight("bold"); this._annotation = new Annotation(this.matrix.svg, font, "none"); assignDelegates(this._annotation, font); } if (this.showTooltip) { this._tooltip = new InfoBox(this.matrix.svg, currFont, "white", 0.7, "#aaa"); assignDelegates(this._tooltip, currFont); } function assignDelegates(obj, font) { obj.getBBox = s => that.chart.measures.getBBox(s, undefined, font); obj.calcTextWidth = s => that.chart.measures.calculateStringWidth(s, undefined, font); obj.calcPosition = (c, b) => that._calcTooltipPosition(c, b); } } _getTooltipContent(d) { const names = this.chart.fieldNames; return [ `${names.row}: ${d.row}`, `${names.column}: ${d.column}`, `${names.value}: ${this._formatValue(d.value, false)}` ]; } _calcTooltipPosition(c, box) { const mBox = this.matrix.svg.node().getBoundingClientRect(), x = c.x + mBox.left, y = c.y + mBox.top; const t = 5, left = x + box.width + t > mBox.right ? c.x - box.width - t : c.x + t, top = y + box.height + t > mBox.bottom ? c.y - box.height - t : c.y + t; return { left, top }; } _renderGroups(g, draw) { const c = this.chart; return g.selectAll("g") .data(c.chartData.rows) .join("g") .attr("transform", (d, i) => `translate(0,${c.scales.y(i)})`) .call(draw) .on("pointerenter", (e, d) => { this._bubbleRects.attr("stroke-width", row => row.name === d.name ? 2 : 0); this._labelRects.attr("stroke-width", row => row.name === d.name ? 2 : 0); }) .on("pointerleave", (e, d) => { this._bubbleRects.attr("stroke-width", 0); this._labelRects.attr("stroke-width", 0); }); } _renderRect(g, x, width) { const c = this.chart; return g.append("rect") .attr("width", width) .attr("height", c.measures.bubbleDiameter) .attr("x", x) .attr("rx", 10) .attr("opacity", 0.5) .attr("fill", this.colors.row) .attr("stroke", d3.color(this.colors.row).darker(1)) .attr("stroke-width", 0); } _click(e, d) { this._sort(d); this._labelRects.attr("fill", d => d.order === SortOrder.ascending ? "white" : this.colors.row); this._bubbleRects.attr( "fill", _ => { if (_.order === SortOrder.none) { return this.colors.row; } else { const gradId = this.uid(_.order === SortOrder.ascending ? "ascending" : "descending"); return _ === d ? this.url(gradId) : this.colors.row; } } ) } _sort(d) { const that = this, indices = [], data = this.chart.chartData, sorted = d.cells.map(v => v); data.resetRows(d); if (d.order === SortOrder.none) d.order = SortOrder.ascending; else if (d.order === SortOrder.ascending) d.order = SortOrder.descending; else d.order = SortOrder.none; if (d.order === SortOrder.ascending) { sorted.sort((a, b) => a.value - b.value); } else if (d.order === SortOrder.descending) { sorted.sort((a, b) => b.value - a.value); } const unit = this.duration / data.columns.length, x = this.chart.scales.x, bubbleRadius = this.chart.measures.bubbleRadius; sortColumn(this.columns.axis); sortColumn(this.columns.labels); this.relocateAnnotation(); this._bubbles.transition() .duration((d, i) => i * unit) .attr("transform", (b, i) => `translate(${x(indices[i]) + bubbleRadius},0)`); function sortColumn(g) { g.transition() .duration((d, i) => i * unit) .attr("transform", c => { let cIndex = 0; for (let i = 0; i < sorted.length; i++) { if (sorted[i].column === c.name) { c.position = cIndex = i; indices.push(i); break; } } return `translate(${x(cIndex) + bubbleRadius},0)`; }); } } } class Highlight { static get matrix() { return 0; } static get byRow() { return 1; } static get top() { return 2; } static get bottom() { return 3; } } class Scales { constructor() { this.x = null; this.y = null; this.r = null; this._maxX = 0; this._maxY = 0; } get maxX() { return this._maxX; } get maxY() { return this._maxY; } initialize(chart) { const measures = chart.measures; const chartData = chart.chartData; this.x = i => i * measures.bubbleDiameter; this.y = i => i * (measures.bubbleDiameter + measures.padding); this.r = d3.scaleLinear() .domain([chartData.min, chartData.max]) .range([measures.bubbleRadius * 0.2, measures.bubbleRadius - 1.5]); this._maxX = this.x(chartData.columns.length); this._maxY = this.y(chartData.rows.length); } } class Slider { constructor(chart, caption) { this._chart = chart; this._caption = caption; this._g = null; this._label = null; this._below = null; this._above = null; this._width = 0; this._min = 0; this._max = 0; this._defaultValue = 0; } get level() { return this._chart.chartData.level; } set level(v) { this._chart.chartData.level = v; } get defaultLevel() { return this._chart.chartData.defaultLevel; } get isPercent() { return this._chart.chartData.numberIsPercentage; } get height() { return this._chart.measures.sliderHeight; } get rowRenderer() { return this._chart.renderer.rows; } render() { const measures = this._chart.measures; this._initialize(); this._g = d3.select(this._chart.partitions.slider) .append("svg") .attr("width", measures.width) .attr("height", this.height) .append("g"); this._renderLabel(); this._renderColorRects(); this._renderSlider(); } _initialize() { const measures = this._chart.measures, chartData = this._chart.chartData; this._defaultValue = this.isPercent ? this.defaultLevel * 100 : this._roundUp(this.defaultLevel, 1), this._width = (measures.width - measures.rowWidth) / 2; let min = chartData.min, max = chartData.max; if (this.isPercent) { min = min * 100; max = max * 100 + 1; min = min > 0 ? min - 1 : min; } this._min = min; this._max = max; } _renderLabel() { this._label = this._g.append("text") .attr("x", this._width + 12) .attr("y", 10) .attr("dy", "0.5em") .attr("fill", "black"); this._updateLabel(this._defaultValue); } _renderColorRects() { const { a, b } = this._getSafeBound(); const x = (this._defaultValue - a) / (b - a) * this._width; this._below = this._g.append("rect") .attr("y", 2) .attr("rx", 5) .attr("width", x).attr("height", this.height - 2) .attr("opacity", 0.5) .attr("fill", this._chart.renderer.colors.below); this._above = this._g.append("rect") .attr("x", x).attr("y", 2) .attr("rx", 5) .attr("width", this._width - x) .attr("height", this.height - 2) .attr("opacity", 0.5) .attr("fill", this._chart.renderer.colors.above); } _renderSlider() { const { a, b } = this._getSafeBound(); const fo = this._g.append("foreignObject") .attr("width", this._width + 2) .attr("height", this.height); this._slider = fo.append("xhtml:input") .attr("type", "range") .attr("min", a).attr("max", b) .style("width", `${this._width - 5}px`) .style("height", `${this._height}px`) .on("click", e => e.stopPropagation()) .on("dblclick", e => { this._slider.node().value = this._defaultValue; this._change(); e.stopPropagation(); }) .on("input", () => this._change()); this._slider.node().value = this._defaultValue; } _change() { const { a, b } = this._getSafeBound(); const v = +this._slider.node().value, vv = v < a ? a : v > b ? b : v, x = (vv - a) / (b - a) * this._width; this._below.attr("width", x); this._above.attr("x", x).attr("width", this._width - x); this._updateLabel(v); this.level = this.isPercent ? v / 100 : v; const colors = this._chart.renderer.colors; this.rowRenderer.bubbles .selectAll("circle") .transition() .duration(1000) .ease(d3.easeBounce) .attr("fill", d => d.value >= this.level ? colors.above : colors.below); this.rowRenderer.highlightBubbles(true); this.rowRenderer.relocateAnnotation(false); } _getSafeBound() { const a = this.isPercent ? this._min : this._roundDown(this._min, 2), b = this.isPercent ? this._max : this._roundUp(this._max, 2); return { a, b }; } _roundUp(n, precision) { const f = n < 0 ? -1 : 1, s = Math.ceil(Math.abs(n)).toString(), d = Math.pow(10, s.length - precision); return Math.ceil(+s / d) * d * f; } _roundDown(n, precision) { const f = n < 0 ? -1 : 1, g = n < 0 ? 1 : 0, s = Math.floor(Math.abs(n)).toString(), d = Math.pow(10, s.length - precision); return (Math.floor(+s / d) + g) * d * f; } _updateLabel(value) { const v = value.toFixed(0); const vStr = this.isPercent ? `${v}%` : d3.format(",.2r")(v); this._label.text(`${this._caption} = ${vStr}`); } } return BubbleMatrix; }36:[{"id":"8a0388963ee5263c447a8daeae8eec8eefc02e1c26ba72af0091d4e0705c88d17c824495bc347c225d3ce972195abe6c612d917787180e87c7bfa0d5fcfaf45b","href":"https://static.observableusercontent.com/files/8a0388963ee5263c447a8daeae8eec8eefc02e1c26ba72af0091d4e0705c88d17c824495bc347c225d3ce972195abe6c612d917787180e87c7bfa0d5fcfaf45b","name":"classdiagram@1.png","type":"image/png","lastModified":1634712584234.79,"size":223558},{"id":"5cf835fe221497ce16499d0d3a0f4f5e2852833e4841f77266c0af0ca48e81f46698df165a15a7b3e1f29f80980e2937c830e29ad69bdad676457db05bdb5744","href":"https://static.observableusercontent.com/files/5cf835fe221497ce16499d0d3a0f4f5e2852833e4841f77266c0af0ca48e81f46698df165a15a7b3e1f29f80980e2937c830e29ad69bdad676457db05bdb5744","name":"clothingsales.csv","type":"text/csv","lastModified":1633977240315.805,"size":49435}] 30:{"id":"d1323970d3fdbb04","slug":"bubble-matrix","title":"🔮Bubble Matrix🔮 Component","thumbnail":"fef2ac1dc7a439e3e4626eb6aa454741c2b9388241034edffb0d095c22da40f7","access_level":"public","create_time":"$D2021-10-11T18:30:19.875Z","update_time":"$D2021-12-04T02:39:43.056Z","view_time":null,"first_public_time":"$D2021-10-11T18:39:18.307Z","fork":false,"stars":36,"starred":false,"owner":{"type":"team","id":"4d412f762b1c1ef6","login":"analyzer2004","name":"Eric Lo","avatar_url":"https://avatars-next.observableusercontent.com/cf09c832c8e8be23605d6badd8d8ca69d2a9cd86ec415f2bec108e06014e8a1d","tier":"starter_2024"},"version":178,"publish_version":178,"role":null,"authored":false,"authors":[{"type":"individual","id":"c4f3a94f7e70150e","login":"analyzer2004","name":"Eric Lo","avatar_url":"https://avatars-next.observableusercontent.com/cf09c832c8e8be23605d6badd8d8ca69d2a9cd86ec415f2bec108e06014e8a1d","tier":null}],"members":[{"type":"individual","id":"c4f3a94f7e70150e","login":"analyzer2004","name":"Eric Lo","avatar_url":"https://avatars-next.observableusercontent.com/cf09c832c8e8be23605d6badd8d8ca69d2a9cd86ec415f2bec108e06014e8a1d","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":true,"trashed":false,"subscribed":null,"forks":27,"collection":{"id":"be711f36b4801835","slug":"datavis-components","title":"1. DataVis Components","owner":{"id":"4d412f762b1c1ef6","login":"analyzer2004","name":"Eric Lo"}},"type":"notebook","body":{"title":"🔮Bubble Matrix🔮 Component","cells":[{"id":0,"value":"$32","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":6,"value":"$33","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":9,"value":"chart = new BubbleMatrix()\n .size([options.width, options.height])\n .options({\n preserveColumnOrder: options.column === \"Month of Year\",\n numberIsPercentage: options.measure === \"Ratio to All Products\", \n sliderCaption: options.measure,\n highlightScope: options.highlight,\n numberOfTopBottom: options.num\n })\n .font({ \n size: 11,\n })\n .columns({\n row: \"Subcategory\",\n column: options.column,\n value: options.measure\n })\n .colors({\n above: options.above,\n below: options.below,\n row: options.row\n })\n .data(data)\n .render()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":83,"value":"To get started, import **BubbleMatrix** from this notebook:\n~~~js\nimport {BubbleMatrix, data} from \"@analyzer2004/bubble-matrix\"\n~~~\nThen, use the code snippet below to create a **BubbleMatrix** using the sample dataset with default options. Enjoy😀!!\n~~~js\nnew BubbleMatrix()\n .size([1024, 700])\n .columns({\n row: \"Subcategory\",\n column: \"Sales Territory Region\",\n value: \"Sales Amount\"\n })\n .data(data)\n .render()\n~~~","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":12,"value":"$34","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":16,"value":"### Class Diagram","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":172,"value":"reference(await FileAttachment(\"classdiagram@1.png\").url())","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":23,"value":"### Source Code","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":27,"value":"$35","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":159,"value":"GitHub Repository","pinned":false,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined"},{"id":30,"value":"md`## Data and other stuff...`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":36,"value":"data = await FileAttachment(\"clothingsales.csv\").csv({typed: true});","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":39,"value":"height = width * 0.65","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":42,"value":"import {form} from \"@mbostock/form-input\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":170,"value":"import {reference} from \"@analyzer2004/bcgmatrix\"","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":45,"value":"md`🌐[ericlo.dev](https://ericlo.dev) 🐱[GitHub Repository](https://github.com/analyzer2004/bubblematrix) 🐦[Twitter](https://twitter.com/analyzer2004)`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"}],"files":"$W36","stdlib":"1","titling":"auto"}} 31:"$30:body"