Inflation adjuster

README.md

On blur, bar heights represent nominal dollars, and bar areas represent real dollars. Mousemoves along the date axis normalizes width, forcing height to represent real dollars.

Bar chart based on mbostock/3885304. Box office data from boxofficemojo.com. CPI from inflationdata.com.

boxoffice.tsv

cpi.tsv

d3-jetpack.js

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data.xlsx

index.html

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<meta charset="utf-8">
<style>

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}

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}

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}

.axis {
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}

.axis path,
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  stroke: #000;
  shape-rendering: crispEdges;
}

.x.axis path {
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}

</style>
<body>

<script src="d3.min.js"></script>
<script src="d3-jetpack.js"></script>
<script src="http://d3js.org/queue.v1.min.js"></script>

<script>

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var yAxis = d3.svg.axis()
    .scale(y)
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    .ticks(10, "$,");

var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
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  .text("Hollywood annual box office grosses, nominal USD");

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    .defer(d3.tsv, "cpi.tsv", indexType)
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    .on("touchmove", scrub)
    .on("mouseleave", reset)
    .on("touchend", reset);

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      .attr("y", function(d) { return y(d.totalgross * (index(date) / index(d.year))); })
      .attr("height", function(d) { return height - y(d.totalgross * (index(date) / index(d.year))); })

    title.text("Hollywood annual box office grosses, real " + date.getFullYear() + " USD");
  }

  function reset() {
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        .attr("y", function(d) { return y(d.totalgross); })
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}

function dataType(d) {
  d.year = new Date(d.year);
  d.totalgross = +d.totalgross;
  return d;
}

function indexType(d) {
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  d.average = +d.average;
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}

function indexer(index) {
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    .domain(index.map(ƒ('date')))
    .range(index.map(ƒ('average')));
}

</script>

thumbnail.png

~$data.xlsx