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46 lines
1.3 KiB
46 lines
1.3 KiB
var WIDTH = 800;
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var HEIGHT = 600;
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var runs = [
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{
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id: 1,
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date: 'October 1, 2017 at 4:00PM',
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distance: 5.2
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},
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{
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id: 2,
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date: 'October 2, 2017 at 5:00PM',
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distance: 7.0725
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},
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{
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id: 3,
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date: 'October 3, 2017 at 6:00PM',
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distance: 8.7
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}
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];
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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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var yScale = d3.scaleLinear(); //create the scale
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yScale.range([HEIGHT, 0]); //set the visual range (e.g. 600 to 0)
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yScale.domain([0, 10]); //set the data domain (e.g. 0 to 10)
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d3.selectAll('circle').data(runs)
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.attr('cy', function(datum, index){
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return yScale(datum.distance);
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});
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var xScale = d3.scaleTime(); //scaleTime maps date values with numeric visual points
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xScale.range([0,WIDTH]);
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xScale.domain([new Date('2017-10-1'), new Date('2017-10-31')]);
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var parseTime = d3.timeParse("%B%e, %Y at %-I:%M%p"); //this format matches our data in the runs array
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var formatTime = d3.timeFormat("%B%e, %Y at %-I:%M%p"); //this format matches our data in the runs array
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d3.selectAll('circle')
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.attr('cx', function(datum, index){
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return xScale(parseTime(datum.date)); //use parseTime to convert the date string property on the datum object to a Date object, which xScale then converts to a visual value
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});
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