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117 lines
2.8 KiB
117 lines
2.8 KiB
// TODO - delete highlighted
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// TODO - different colors for each highted dot, matched in table row backgrounds
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const WIDTH = 800;
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const HEIGHT = 600;
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const parseTime = d3.timeParse("%B %e, %Y");
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let instances;
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let xScale, yScale;
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let highlighted = 0;
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const renderTable = () => {
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const trs = d3.select('tbody')
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.selectAll('tr')
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.data(instances.filter(d => d.highlighted > 0).sort((a,b) => a.highlighted - b.highlighted), d => d.id)
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.enter()
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.append('tr')
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//.exit()
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//.remove()
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.selectAll('td')
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.data(d => [
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d.instance_id,
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d.course,
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d.graduation_date,
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d.total_students,
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`${d.dropped} (${Math.floor(d.dropped/d.total_students*100)}%)`,
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d.graduates,
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`${d.ninety_day_outcomes} (${Math.floor(d.ninety_day_outcomes/d.graduates*100)}%)`
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])
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.enter()
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.append('td')
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.text(value => value)
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}
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const renderPoints = () => {
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const circles = d3.select('#points')
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.selectAll('circle')
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.data(instances, d => d.id)
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.enter()
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.append('circle');
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d3.selectAll('circle')
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.attr('cy', (datum, index) => yScale(datum.ninety_day_outcomes/datum.graduates*100) );
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d3.selectAll('circle')
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.attr('cx', (datum, index) => xScale(parseTime(datum.graduation_date)) );
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d3.selectAll('circle')
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.classed('highlighted', (datum, index)=> datum.highlighted > 0 )
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d3.selectAll('circle').on('click', (event, datum) => {
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if(datum.highlighted === 0){
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datum.highlighted = ++highlighted;
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} else {
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datum.highlighted = 0;
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}
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renderPoints()
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renderTable()
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});
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}
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const setupGraph = ()=>{
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d3.select('svg');
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d3.select('svg')
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.style('width', WIDTH)
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.style('height', HEIGHT);
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xScale = d3.scaleTime();
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xScale.range([0,WIDTH]);
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const xDomain = d3.extent(instances, (datum, index) => {
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return parseTime(datum.graduation_date);
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});
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xScale.domain(xDomain);
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yScale = d3.scaleLinear();
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yScale.range([HEIGHT, 0]);
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const yDomain = d3.extent(instances, (datum, index) => {
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return datum.ninety_day_outcomes/datum.graduates*100;
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})
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yScale.domain(yDomain);
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}
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const createAxes = () => {
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const bottomAxis = d3.axisBottom(xScale);
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d3.select('#container')
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.append('g')
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.attr('id', 'x-axis')
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.call(bottomAxis)
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.attr('transform', 'translate(0,'+HEIGHT+')');
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const leftAxis = d3.axisLeft(yScale);
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d3.select('#container')
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.append('g')
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.attr('id', 'y-axis')
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.call(leftAxis);
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}
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const createFormSubmissionHandler = () => {
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d3.select('form').on('submit', (event)=>{
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event.preventDefault();
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const instanceID = parseInt(d3.select('input[type="text"]').property('value'))
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const found = instances.find(i => i.instance_id === instanceID)
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found.highlighted = ++highlighted;
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renderTable();
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renderPoints();
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});
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}
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window.onload = async ()=>{
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instances = await d3.json('/instances');
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instances.forEach(instance => instance.highlighted = highlighted)
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setupGraph();
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createAxes();
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renderPoints();
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createFormSubmissionHandler();
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}
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