Published
Edited
Jul 29, 2020
Importers
taserUseAgeChart = md`
#### Police Taser use against children age 17 and under in England and Wales, 2018-19
<figcaption>Graph shows total count. Metropolitan Police's count has been truncated for readability. No force-specific data is available for Staffordshire, Warwickshire, West Mercia, Norfolk and Suffolk.</figcaption>
<div style='margin-left: ${graph.margin.left - 1}px'>${legend}</div>
${chart}
`
legend = swatches({
color: d3.scaleOrdinal(["Under 11 years old", "11-17 years old"], [colours.primary, colours.primary50])
})
chart = {
const svg = d3.create("svg").attr("viewBox", [0, 0, width, height]);
// The bars themselves
svg
.append("g")
.selectAll("g")
.data(series)
.join("g")
// Each indivdual bar
.attr("fill", d => d.key === "u11" ? colours.primary : colours.primary50)
.selectAll("rect")
.data(d => d)
.join("rect")
.attr("x", d => x(d[0]))
.attr("y", (d, i) => y(d.data.force))
.attr("width", d => x(d[1]) - x(d[0]))
.attr("height", y.bandwidth())
// Text for under 12s
svg
.append("g")
.selectAll("g")
.data(series)
.join("g")
.attr("fill", colours.primary)
.attr("text-anchor", "start")
.attr("font-family", graph.font)
.attr("font-size", graph.fontSize)
.selectAll("text")
.data(d => d)
.join("text")
.filter((d) => d[0] !== 0)
.attr("x", d => x(d[0]))
.attr("y", (d, i) => {
return y(d.data.force) + y.bandwidth() / 2
})
.attr("dy", "0.35em")
.attr("dx", 5)
.text(d => d[0])
// Text for total
svg
.append("g")
.attr("fill", colours.primary50)
.attr("text-anchor", "start")
.attr("font-family", graph.font)
.attr("font-size", graph.fontSize)
.selectAll("text")
.data(ageLeaderboard)
.join("text")
.filter((d) => d.total !== 0)
.attr("x", d => x(d.total))
.attr("y", (d, i) => {
return y(d.force) + y.bandwidth() / 2
})
.attr("dy", "0.35em")
.attr("dx", 4)
.text(d => d.total)
.call(text => text.filter(d => d.total > 150)
.text(d => d.total + " →")
.attr("x", width - 10)
.attr("fill", "white")
.attr("text-anchor", "end"));
// Draw axes
svg.append("g").call(xAxis);
svg.append("g").call(yAxis);
return svg.node()
}
x = d3
.scaleLinear()
.domain([0, 155])
.range([graph.margin.left, width - graph.margin.right])
y = d3
.scaleBand()
.domain(ageLeaderboard.map(d => d.force))
.rangeRound([graph.margin.top, height - graph.margin.bottom])
.padding(0.1)
xAxis = g =>
g
.attr("transform", `translate(0,${graph.margin.top})`)
.call(d3.axisTop(x).ticks(width / 80, ageLeaderboard.format))
.call(g => g.select(".domain").remove())
yAxis = g =>
g
.attr("transform", `translate(${graph.margin.left},0)`)
.call(d3.axisLeft(y).tickSizeOuter(0))
.attr("font-size", graph.fontSize)
height = Math.ceil((ageLeaderboard.length + 1) * graph.barHeight) + graph.margin.top + graph.margin.bottom
// This object provides the data in the form needed for stacked bars
series = d3
.stack()
.keys(['u11', 'a11_18'])(ageLeaderboard)
.map(d => (d.forEach(v => (v.key = d.key)), d))
getAgeStats = (forceName) => {
let forceStats = taserByAge.filter((f) => f["Police Force"] === forceName)
let under11 = forceStats.find((f) => f.variable === "0-11").value
let under18 = forceStats.find((f) => f.variable === "11-17").value
return {
force: forceName,
u11: under11,
a11_18: under18,
u18: under11 + under18
}
}
getAgeStats("Greater Manchester")
ageLeaderboard = forces.map((f) => {
let stats = getAgeStats(f)
return {
force: f,
total: stats.u18,
u11: stats.u11,
a11_18: stats.a11_18
}
}).filter((f) => f.total != 0)
.sort((a, b) => b.total - a.total)
childrenPerFTE2019 = (force = false) => {
let total = getAgeStats(force).u18
let officers = officerFTETotalByYear(2019, force)
let formatted = d3.format(".2")(total * 100 / officers)
return formatted
}
childrenPerFTE2019('Greater Manchester')
forces.map((f) => {
let fte = childrenPerFTE2019(f)
return {
force: f,
fte: fte
}
}).sort((a, b) => b.fte - a.fte)
import { swatches } from "@d3/color-legend"
import {colours, d3, graph, forces, officerFTETotalByYear} from '@resistancelab/resistance-lab-defaults'
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