2b:null 2c:["$","title",null,{"children":"Programming Languages Between 4 Different Jobs | Khuyen Tran | Observable"}] 31:T5b2,# Programming Languages Between 4 Different Jobs 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 to which the data value they represent belongs. A 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.32:T683,viewof options = form(html` `)33:Ta618,BubbleMatrix = { // https://github.com/analyzer2004/bubblematrix // Copyright 2021 Eric Lo class BubbleMatrix { constructor(container) { 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; 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(); 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} = ${vStr}`); } } return BubbleMatrix; }34:[{"id":"44e96283c9bb04367c378aca06598eca1400699585ea0a85dbcc70b69ddfec527066df92ce17485f5bd1cffc493c8ac52d4ea2b06ef96a19d88b71c9f45bda83","href":"https://static.observableusercontent.com/files/44e96283c9bb04367c378aca06598eca1400699585ea0a85dbcc70b69ddfec527066df92ce17485f5bd1cffc493c8ac52d4ea2b06ef96a19d88b71c9f45bda83","name":"languages@5.csv","type":"text/csv","lastModified":1635101481513.742,"size":1641}] 2f:{"id":"83568ff47b827a23","slug":"languages-between-jobs","title":"Programming Languages Between 4 Different Jobs","thumbnail":"4b1414af8f15f0e097d8ab73c7379e20fd3ee3ff5fee7ad5312a7cfec77ae237","access_level":"public","create_time":"$D2021-10-17T12:39:12.640Z","update_time":"$D2021-10-24T19:41:34.828Z","view_time":null,"first_public_time":"$D2021-10-17T15:17:10.914Z","fork":{"id":"d1323970d3fdbb04","slug":"bubble-matrix","title":"🔮Bubble Matrix🔮 Component","owner":{"id":"4d412f762b1c1ef6","login":"analyzer2004","name":"Eric Lo"}},"stars":0,"starred":false,"owner":{"type":"team","id":"eba67ba19f64a52e","login":"khuyentran1401","name":"Khuyen Tran","avatar_url":"https://avatars-next.observableusercontent.com/9ed7804a0392bdec88be148f6d897842040d16d18f13797a76f0cb2c2c482638","tier":"starter_2024"},"version":153,"publish_version":153,"role":null,"authored":false,"authors":[{"type":"individual","id":"2b8c8acd73dd8a4e","login":"khuyentran1401","name":"Khuyen Tran","avatar_url":"https://avatars-next.observableusercontent.com/9ed7804a0392bdec88be148f6d897842040d16d18f13797a76f0cb2c2c482638","tier":null}],"members":[{"type":"individual","id":"2b8c8acd73dd8a4e","login":"khuyentran1401","name":"Khuyen Tran","avatar_url":"https://avatars-next.observableusercontent.com/9ed7804a0392bdec88be148f6d897842040d16d18f13797a76f0cb2c2c482638","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"subscribed":null,"forks":2,"collection":{"id":"be9548aa024f0137","slug":"analyze-data-related-positions","title":"Analyze Data Related Positions","owner":{"id":"eba67ba19f64a52e","login":"khuyentran1401","name":"Khuyen Tran"}},"type":"notebook","body":{"title":"Programming Languages Between 4 Different Jobs","cells":[{"id":0,"value":"$31","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":6,"value":"$32","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":9,"value":"chart = {\n const div = document.createElement(\"div\");\n yield div;\n\n new BubbleMatrix(div)\n .size([options.width, options.height])\n .options({\n numberIsPercentage: options.measure === \"Ratio Relative to All Skills Per Title\", \n sliderCaption: \"count\",\n highlightScope: options.highlight,\n numberOfTopBottom: options.num\n })\n .font({ \n size: 13,\n })\n .columns({\n row: \"Title\",\n column: \"skill\",\n value: \"count\"\n })\n .colors({\n above: \"#9427ec\",\n below: \"#dd91f2\",\n row: \"#caf0f8\"\n })\n .data(languages)\n .render();\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":23,"value":"### Source Code","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":27,"value":"$33","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":30,"value":"md`## Data and other stuff...`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":100,"value":"languages = await FileAttachment(\"languages@5.csv\").csv()","pinned":true,"hidden":false,"mode":"ojs","author":"$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":"$undefined"},{"id":45,"value":"md`🌐[ericlo.dev](https://ericlo.dev) 🐱[GitHub Repository](https://github.com/analyzer2004/bubblematrix) 🐦[Twitter](https://twitter.com/analyzer2004)`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"}],"files":"$W34","stdlib":"1","titling":"auto"}} 30:"$2f:body"