Old school D3 from simpler times

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molliemarie

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FirstScatterComplete

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<!DOCTYPE html>
<meta charset="utf-8">

<script src="https://d3js.org/d3.v5.min.js"></script>

<style type="text/css">

svg {
  border:1px solid #f0f;
}
  
.axis line {
  stroke-width:1px;
  stroke: #ccc;
  stroke-dasharray: 2px 2px;
}

.axis text {
  font-size: 12px;
  fill: #777;
}

.axis path {
  display: none;
}
  
.ufoGroup text {
  fill: #aaa; /*grey out text*/
  font-size: 11px;
}
  
.ufoCircle {
  fill: limegreen;
}

</style>

<body>
  <div id='titleDiv'>
    <text>UFO Sightings in 2018</text>
  </div>
</body>

<script>
	//***** defining variables *****
  const parseTime = d3.timeParse("%m/%Y");
  const margin = {top: 20, right: 30, bottom: 20, left: 30};
  const outerWidth = 700;
  const outerHeight = 300;
  const innerWidth = outerWidth - margin.left - margin.right
  const innerHeight = outerHeight - margin.top - margin.bottom
  
  //***** Defining svgs *****
  const SVG = d3.select("body").append("svg")
    .attr("width", outerWidth)
    .attr("height", outerHeight);  
  
  const svg = SVG.append('g')
  	.attr("transform", "translate(" + margin.left + "," + margin.top + ")");  
  
  //***** Defining scales and axes *****
  const xScale = d3.scaleTime()
    .range([0, innerWidth]);
  
  const xAxis = d3.axisBottom(xScale)
    .tickSize(-innerHeight);
  
  const yScale = d3.scaleLinear()
    .range([innerHeight, 0])
  
  const yAxis = d3.axisLeft(yScale)
  	.tickSize(-innerWidth);
  
//***** reading in data *****
	d3.csv("https://raw.githubusercontent.com/molliemarie/MSIA-D3Course-2019/master/Projects%26Exercises/FirstCompleteScatter/data/ufo.csv", function(d) {
    return {
      date: d.date,
      count: +d.count,
      month: +d.date.split('/')[0],
      parsedDate: parseTime(d.date),
      year: parseTime(d.date).getYear() + 1900
    };
  }).then(ready);
  
  //***** once data is ready, pass into ready function *****
function ready(fullData) {
  
  //***** filtering to get startData *****
  const startData = fullData.filter(function(d) { return d.year == 2018; })
  
  console.log(startData)
  
  //***** updating scales with data *****
  xScale.domain(d3.extent(startData, function(d) { return d.parsedDate; }))
  
  yScale.domain([0, d3.max(startData, function(d) { return d.count})])
  
  //***** defining ufoGroup *****
  const ufoGroup = svg.selectAll('.ufoGroup')
    .data(startData).enter().append('g') 
    .attr('class', 'ufoGroup')
    .attr('transform', function(d) { return 'translate(' + xScale(d.parsedDate) + ',' + yScale(d.count) + ')'})
  
  //***** Create axis groups *****
  const xAxisGroup = svg.append("g")
      .attr("class", "x axis") 
      .attr("transform", "translate(0," + innerHeight + ")")
      .call(xAxis);
  
  const yAxisGroup = svg.append("g")
    .attr("class", "y axis") //gives group the classes 'y' and 'axis'
    .call(yAxis);
  
  //***** appending circles *****
  ufoGroup.append('circle')
    .attr('class', 'ufoCircle')
    .attr('r', 10)

//***** appending text *****
  ufoGroup.append('text')
    .attr('class', 'ufoText')
    .attr('dx', 10)
    .attr('dy', -10)
    .text(function(d) { return d.count})
}

</script>

https://d3js.org/d3.v5.min.js