I'm a professor of mathematics at the University of North Carolina Asheville. I've also done a fair amount of consulting work over the years focusing on scientific and data visualization.
I'm happy to be part of the first Observable Ambassador's cohort.
A unimodal function with fractal level curvesA long scrollable PlotWavy spheresTwo line chartsFidding with axes labelsJumpy bar plotRegression mark with legendAdding data to array and plot histogram after each added data pointLegends and Swatches in SVGDrawing the MNIST digitsDelayed evaluationSmooth Zooming with imagesForce directed fit and zoomHighlight neighborsStatic ColorsReproduce a Gantt chartSpecifying months in a PlotCircular octa-gasketExtracting SVGProblem with domain when using group?d3 cubic bezier curveWorld population bubble mapMutliple bubble maps for CSV dataViewing a grid of images via FileAttachment.zip()Plotting a few points on a mapDisplaying Folium maps in iframesTextured globeAn SVG from an embedded cellAges of US SenatorsCovid Data Source Scatter PlotA dot plot with datesAttaching a pointerenter event to the lines in a chart
Copying from one SVG to another
svg1 = {
let svg = d3
.create('svg')
.attr('width', size)
.attr('height', size);
svg
.append('g')
.append('circle')
.attr('cx', `${size / 2}`)
.attr('cy', `${size / 2}`)
.attr('r', `${size / 4}`)
.attr('fill', '#aaa')
.attr('stroke', '#000');
return svg.node();
}
svg2 = {
let svg = d3.create("svg").attr("width", size).attr("height", size);
svg
.append("line")
.attr("x1", 0)
.attr("y1", 0)
.attr("x2", size)
.attr("y2", size)
.attr("stroke", "#000");
// Here, we select svg1, then select the circle.
// We also clone the circle since it can only be
// produced once in the DOM.
let other = d3.select(svg1);
let circle = other.select("g").clone(true);
svg.append(() => circle.node());
svg
.append("line")
.attr("x1", 0)
.attr("y1", size)
.attr("x2", size)
.attr("y2", 0)
.attr("stroke", "#000");
return svg.node();
}
svg3 = {
let svg = d3
.create('svg')
.attr('width', size)
.attr('height', size);
svg
.append('line')
.attr('x1', 0)
.attr('y1', 0)
.attr('x2', size)
.attr('y2', size)
.attr('stroke', '#000');
let other = d3.select(svg1).clone(true);
svg.append(() => other.node());
svg
.append('line')
.attr('x1', 0)
.attr('y1', size)
.attr('x2', size)
.attr('y2', 0)
.attr('stroke', '#000');
return svg.node();
}
size = 400
d3 = require('d3@6')
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
