<svg width="100" height="100">
<g transform="translate(50, 50)">
<circle r="50" fill="steelblue"/>
<text fill="white" font-size="50" dominant-baseline="middle" text-anchor="middle">vis</text>
</g>
</svg>
{
const svg = d3.create('svg')
.attr('width', 100)
.attr('height', 100);
const g = svg.append('g')
.attr('transform', 'translate(50, 50)');
g.append('circle')
.attr('r', 50)
.attr('fill', 'steelblue');
g.append('text')
.attr('fill', 'white')
.attr('font-size', 50)
.attr('dominant-baseline', 'middle')
.attr('text-anchor', 'middle')
.text('vis');
return svg.node();
}
segments = [
{ x1: 5, y1: 5, x2: 5, y2: 95 },
{ x1: 45, y1: 5, x2: 45, y2: 95 },
{ x1: 5, y1: 50, x2: 45, y2: 50 },
{ x1: 55, y1: 5, x2: 95, y2: 5 },
{ x1: 55, y1: 95, x2: 95, y2: 95 },
{ x1: 75, y1: 5, x2: 75, y2: 95 },
]
{
const svg = d3.create('svg')
.attr('width', 100)
.attr('height', 100);
svg.selectAll('line')
.data(segments)
.join('line')
.attr('x1', d => d.x1)
.attr('x2', d => d.x2)
.attr('y1', d => d.y1)
.attr('y2', d => d.y2)
.attr('stroke', 'black')
return svg.node();
}
widthIris = 640
heightIris = 500
marginIris = ({top: 50, right: 120, bottom: 50, left: 120})
sepalLengthExtent = d3.extent(iris, d => d.sepalLength)
xIris = d3.scaleLinear()
.domain(sepalLengthExtent).nice()
.range([marginIris.left, widthIris - marginIris.right])
sepalWidthExtent = d3.extent(iris, d => d.sepalWidth)
yIris = d3.scaleLinear()
.domain(sepalWidthExtent).nice()
.range([heightIris - marginIris.bottom, marginIris.top])
species = new Set(iris.map(d => d.species))
colorIris = d3.scaleOrdinal()
.domain(species)
.range(d3.schemeCategory10)
xAxisIris = d3.axisBottom(xIris)
yAxisIris = d3.axisLeft(yIris)
scatterplot = {
const svg = d3.create('svg')
.attr('width', widthIris)
.attr('height', heightIris);
// draw the circles in circlesGroup
const circlesGroup = svg.append('g');
circlesGroup.selectAll('circle')
.data(iris)
.join('circle')
.attr('cx', d => xIris(d.sepalLength))
.attr('cy', d => yIris(d.sepalWidth))
.attr('fill', d => colorIris(d.species))
.attr('r', 3);
// create and add axes and axis labels
// for the x-axis, we'll do it in three steps
// first we create a group for the axis and move it to the bottom of the visualization
const xAxisGroup = svg.append('g')
.attr("transform", `translate(0, ${heightIris - marginIris.bottom})`);
// next we use the axis generator to draw the axis in the group
xAxisGroup.call(xAxisIris);
// finally we add an axis label
xAxisGroup.append("text")
.attr("x", widthIris / 2)
.attr("y", 40)
.attr("fill", "black")
.attr("text-anchor", "middle")
.text("sepal length (cm)");
// for the y-axis, we'll do it all together:
svg.append('g')
.attr("transform", `translate(${marginIris.left})`)
.call(yAxisIris)
.append("text")
.attr("x", -40)
.attr("y", heightIris / 2)
.attr("fill", "black")
.attr("dominant-baseline", "middle")
.text("sepal width (cm)");
return svg.node();
}
sites = d3.groupSort(
barley,
group => d3.sum(group, d => d.yield),
d => d.site
).reverse()
varities = d3.groupSort(
barley,
group => d3.sum(group, d => d.yield),
d => d.variety
).reverse()
varietySiteYields = d3.flatRollup(
barley,
group => d3.sum(group, d => d.yield),
d => d.variety,
d => d.site
).map(([variety, site, amount]) => ({variety, site, yield: amount}))
maxYield = d3.max(varietySiteYields, d => d.yield)
cellSize = 60
marginsBarley = ({top: 0, right: 130, bottom: 50, left: 120})
barleyWidth = varities.length * cellSize + marginsBarley.left + marginsBarley.right
barleyHeight = sites.length * cellSize + + marginsBarley.top + marginsBarley.bottom
xBarley = d3.scalePoint()
.domain(varities)
.range([marginsBarley.left, barleyWidth - marginsBarley.right])
.padding(0.5)
yBarley = d3.scalePoint()
.domain(sites)
.range([marginsBarley.top, barleyHeight - marginsBarley.bottom])
.padding(0.5)
maxRadius = cellSize / 2 - 2
radius = d3.scaleSqrt()
.domain([0, maxYield]).nice()
.range([0, maxRadius])
xAxisBarley = d3.axisBottom(xBarley)
yAxisBarley = d3.axisLeft(yBarley)
matrix = {
// set up
const svg = d3.create('svg')
.attr('width', barleyWidth)
.attr('height', barleyHeight);
// draw circles
const matrix = svg.append('g');
// create one circle for each element in varietySiteYields
// set the cx, cy, r, and fill attributes for each circle
matrix.selectAll('circle')
.data(varietySiteYields)
.join('circle')
.attr('cx', d => xBarley(d.variety))
.attr('cy', d => yBarley(d.site))
.attr('r', d => radius(d.yield))
.attr('fill', 'steelblue');
// draw the axes
svg.append('g')
.attr("transform", `translate(0, ${barleyHeight - marginsBarley.bottom})`)
.call(xAxisBarley)
// remove baseline from the axis
.call(g => g.select(".domain").remove())
// add axis label
.append("text")
.attr("x", barleyWidth / 2)
.attr("y", 40)
.attr("fill", "black")
.attr("text-anchor", "middle")
.attr('font-weight', 'bold')
.text("Variety");
svg.append('g')
.attr("transform", `translate(${marginsBarley.left})`)
.call(yAxisBarley)
// remove baseline from axis
.call(g => g.select(".domain").remove())
// add axis label
.append("text")
.attr("x", -marginsBarley.left)
.attr("y", barleyHeight / 2)
.attr("fill", "black")
.attr("dominant-baseline", "middle")
.attr("text-anchor", "start")
.attr('font-weight', 'bold')
.text("Site")
// draw the size legend
svg.append("g").call(sizeLegend);
return svg.node();
}
sizeLegend = g => {
g.attr("transform", `translate(${barleyWidth - marginsBarley.right + 2 * maxRadius},20)`)
.attr("font-family", "sans-serif")
.attr("font-size", 12);
g.append('text')
.attr('font-weight', 'bold')
.text('Yield');
const legend = g.selectAll("g")
.data([40, 80, 120])
.join("g")
.attr("transform", (d, i) => `translate(0, ${(i + 1) * 2 * radius(d)})`);
legend.append("circle")
.attr("r", d => radius(d))
.attr("fill", "steelblue");
legend.append("text")
.attr("x", maxRadius + 5)
.attr("dominant-baseline", "middle")
.text(d => d);
}
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