Published
Edited
Jul 12, 2020
14 stars
25 Apr 2020: First Bar Chart26 Apr 2020: Bar Chart Revisited27 Apr 2020: Finalising the Bar Chart28 Apr 2020: What Else I Learned From That Bar Chart29 Apr 2020: Setting up Observable30 Apr 2020: What Else Can I Do With This Bar Chart?1 May 2020: Formatting Numbers and Sorting a Bar Chart2 May 2020: Exploring More of Observable and Vega-Lite3 May 2020: Exploring More Vega-Lite4 May 2020: Vega-Lite Scatterplot and Heat Map, and More Posts on Getting Started With Data Viz5 May 2020: Vega-Lite Scatterplot continued6 May 2020: D3 Scatterplot7 May 2020: D3 Scatterplot with Legends8 May 2020: D3 Scatterplot with Tooltips10 May 2020: Line charts11 May 2020: Vega-Lite Line Charts12 May 2020: D3 Line Chart13 May 2020: D3 Multi-Line Chart14 May 2020: D3 Multi-Line Chart with Annotations15 May 2020: D3 Multi-Line Chart with Shading16 May 2020: Donut Charts and Pie Charts17 May 2020: Pie Charts in Vega-Lite18 May 2020: Donut Chart in Vega-Lite19 May 2020: Donut Chart in D320 May 2020: Donut Chart in D3 with Footnotes21 May 2020: Donut Chart in D3 with Tooltips22 May 2020: Area Charts, Stacked Area Charts, Stream graphs and Ridgelines23 May 2020: Area Charts in Vega-Lite and CSV Parsing24 May 2020: Area Charts in D3 with Tooltips25 May 2020: Cumulative Area Chart in D3 with Tooltips26 May 2020: Histograms and Density Plots27 May 2020: Exploratory Histogram28 May 2020: D3 Histogram29 May 2020: D3 Histogram Styling30 May 2020: Data Tables31 May 2020: Wikipedia Data Tables1 June 2020: Wrangling Wikipedia List Data and Summary Statistics2 June 2020: Treemaps, Dendrograms, Sunbursts, Circle Packing, and Tree Diagrams3 June 2020: D3 Tree Diagram and D3 Hierarchy4 June 2020: D3 Clustered Dendrogram5 June 2020: D3 Radial Tidy Tree and Radial Dendrogram6 June 2020: D3 Collapsible Tidy Tree7 June 2020: D3 Collapsible Tidy Tree (Improved)8 June 2020: Designing for Touch Devices: Drag, Click, Hover, Focus, Scroll, Zoom, Delaunay, Voronoi9 June 2020: Designing for Small Screens: Responsive Data Viz, Resizing, and Aspect Ratios10 June 2020: Typography for Data Viz11 June 2020: Color in Data Viz12 June 2020: Styled Bar Chart13 June 2020: Accessible Bar Chart and Accessible Data Table14 June 2020: Line Chart with Points and Bar Chart15 June 2020: Network Diagrams16 June 2020: D3 Disjoint Force-Directed Graph17 June 2020: D3 Bar Chart with Textured Line18 June 2020: D3 Bar Chart Transitions19 June 2020: D3 Bar Chart Transitions (Improved)20 June 2020: Sketchy D3 Bar Chart Style21 June 2020: Brushing to Filter and Zoom Using D3 Brush22 June 2020: D3 Bar Chart Brush (Work In Progress)23 June 2020: Linear Regression24 June 2020: Hatched Pattern Effect Bar Chart25 June 2020: Checkerboard Fill Effect Bar Chart26 June 2020: D3 Bar Chart Brush27 June 2020: Using Textures28 June 2020: Charting Typing Speed: Data and Exploration29 June 2020: Charting Typing Speed: Data and Exploration with Vega-Lite30 June 2020: Charting Typing Speed: Data and Exploration with Vega-Lite and Datawrapper1 July 2020: Charting Typing Speed: Data and Exploration with Vega-Lite Bubble Chart2 July 2020: Charting Typing Scores: Data and Exploration with Vega-Lite3 July 2020: Journal Updates and User Testing4 July 2020: About Heatmaps5 July 2020: Data Wrangling for a Heatmap6 July 2020: D3 Heatmap Without Sorting7 July 2020: D3 Heatmap With Sorting8 July 2020: D3 Heatmap with Legend9 July 2020: D3 Heatmap Styled10 July 2020: About Bubble Charts11 July 2020: D3 Bubble Chart12 July 2020: D3 Bubble Chart with Labels on Hover13 July 2020: D3 Bubble Chart with Voronoi Labels on Hover14 July 2020: D3 Bubble Chart with Voronoi Tooltips15 July 2020: About Population Pyramids16 July 2020: Data Wrangling for Population Pyramids17 July 2020: D3 Population Pyramid18 July 2020: About Sankey, Alluvial, Parallel Sets, and Parallel Coordinates19 July 2020: Data Wrangling for a Sankey Diagram20 July 2020: D3 Sankey Diagram21 July 2020: D3 Sankey Diagram with Hovers and Percentages22 July 2020: D3 Parallel Coordinates23 July 2020: D3 Parallel Coordinates (Updates)24 July 2020: About Slope Charts25 July 2020: Data Wrangling for a Slope Chart26 July 2020: D3 Slope Chart27 July 2020: D3 Slope Chart with Color28 July 2020: D3 Slope Chart with Highlight Color and Gray Context Lines29 July 2020: D3 Slope Chart Small Multiples (Work in Progress)30 July 2020: D3 Slope Chart Small Multiples31 July 2020: About Dumbbell or Connected Dot Plots1 August 2020: D3 Dumbbell Plot2 August 2020: 100 Days of Data VizAbout TimelinesBuilding TimelinesAbout SparklinesAbout Circle PackingD3 Circle PackingD3 Circle Packing with Data Wrangling and Interactive GroupingSort by arbitrary arrayAbout Choropleth MapsAbout Map Data: GeoJSON and TopoJSON with D3
9 May 2020: D3 Scatterplot with Voronoi Tooltips
d3 = require("d3@5", "d3-delaunay@5")
// d3 = require("d3@5", "d3-voronoi@1") // This is what Agnes Chang's notebook uses instead
scatterplotWithVoronoiTooltips = {
const svg = d3.create("svg")
.style("font-family", "Work Sans, sans-serif")
.attr("viewBox", [0, 0, width, height]);
const exerciseColorMap = new Map([["Bike", "#8242a8"], ["Run", "#ff1493"], ["Walk", "#FFCE1E"]]);
svg.append("g")
.call(xAxis);
svg.append("g")
.call(yAxis);
// chart title
svg.append("text")
.attr("transform", `translate(0, 0)`)
.attr("dy", "1em")
.attr("text-anchor", "start")
.style("fill", "#202630")
.style("font-size", 18)
.html("Exercise in April–May 2020");
// POINTS
svg.append("g")
.attr("class", "points")
.selectAll("circle")
.data(data.filter(d => d.y > 1))
.join("circle")
.attr("stroke-width", "3")
.attr("opacity", 0.7)
.attr("stroke", d => exerciseColorMap.get(d['typeOfExercise']))
.attr("fill", d => exerciseColorMap.get(d['typeOfExercise']))
.attr("transform", d => `translate(${x(d.x)},${y(d.y)})`)
.attr("r", 3);
const voronoi = d3.Delaunay
.from(data, d => x(d.x), d => y(d.y))
.voronoi([margin.left, margin.top, width - margin.right, height - margin.bottom]); // ensures voronoi is limited to the chart area
svg.append("g")
.attr("class", "voronoiWrapper")
.selectAll("path")
.data(data)
.join("path")
.attr("opacity", 0.5)
// .attr("stroke", "#ff1493") // Hide overlay
.attr("fill", "none")
.style("pointer-events", "all")
.attr("d", (d,i) => voronoi.renderCell(i))
.on("mouseover", (d, i) => {
if (d.y > 1) {
svg.append('g')
.attr("class", "tooltip")
.attr("transform", `translate(${x(d.x)},${y(d.y)})`)
.call(popover, `Amount: ${d.y.toLocaleString(undefined, {style: "decimal"})}
${d.x.toLocaleString(undefined, {month: "short", day: "numeric", year: "numeric"})}
${d.typeOfExercise}`)
}
})
.on("mouseout", () => svg.selectAll('.tooltip').remove());
return svg.node();
}
viewof chart = {
const svg = d3.select(DOM.svg(width, height));
svg.append("g")
.call(xAxis);
svg.append("g")
.call(yAxis);
svg.append("g")
.attr("class", "circlesWrapper")
.selectAll("circle")
.data(data)
.join("circle")
.attr("opacity", 0.7)
.attr("fill", d => "#ff1493")
.attr("transform", d => `translate(${x(d.x)},${y(d.y)})`)
.attr("r", 3);
// voronoi
var cells = d3.voronoi()
.x(d => x(d.x))
.y(d => y(d.y))
.extent([[0, 0], [width, height]])
.polygons(data);
const cell = svg.append("g")
.attr("class", "voronoiWrapper")
.attr("fill", "none")
.selectAll("path")
.data(cells)
.enter();
cell.append("path")
.style("pointer-events", "all")
.attr("stroke", "#ccc")
.attr("d", d => `M${d.join("L")}Z`)
.on("mouseover", (d, i) => {
if (d.y > 1) {
svg.append('g')
.attr("class", "tooltip")
.attr("transform", `translate(${x(d.x)},${y(d.y)})`)
.call(popover, `Amount: ${d.y.toLocaleString(undefined, {style: "decimal"})}
${d.x.toLocaleString(undefined, {month: "short", day: "numeric", year: "numeric"})}
${d.typeOfExercise}`)
}
})
.on("mouseout", () => svg.selectAll('.tooltip').call(popover, null));
return svg.node();
}
data[0]
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