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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

              
                <div id="wrapper"></div>  
              
            
!

CSS

              
                .bin rect {
    fill: cornflowerblue;
}
.bin text {
    text-anchor: middle;
    fill: darkgrey;
    font-size: 12px;
    font-family: sans-serif;
}

.mean {
    stroke: maroon;
    stroke-dasharray: 2px 4px;
}

.x-axis-label {
    fill: black;
    font-size: 1.4em;
    text-transform: capitalize;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2em;
}

button {
    font-size: 1.2em;
    margin-left: 1em;
    padding: 0.5em 1em;
    appearance: none;
    -webkit-appearance: none;
    background:darkseagreen;
    color: white;
    border: none;
    box-shadow: 0 5px 0 0 seagreen;
    border-radius: 6px;
    font-weight: 600;
    outline: none;
    cursor: pointer;
    transition: all 0.1s ease-out;
}

button:hover,
button:focus {
    background: #73b173;
    box-shadow: 0 4px 0 0 seagreen;
    transform: translateY(1px);
}

button:hover:active,
button:focus:active,
button:active {
    box-shadow: 0 1px 0 0 seagreen;
    transform: translateY(4px);
}
              
            
!

JS

              
                async function drawBars() {
  // 1. Access data
  const dataset = await d3.json("https://s3-us-west-2.amazonaws.com/s.cdpn.io/140/my_weather_data.json");

  // 2. Create chart dimensions

  const width = 500;
  let dimensions = {
    width: width,
    height: width * 0.6,
    margin: {
      top: 30,
      right: 10,
      bottom: 50,
      left: 50
    }
  };
  dimensions.boundedWidth =
    dimensions.width - dimensions.margin.left - dimensions.margin.right;
  dimensions.boundedHeight =
    dimensions.height - dimensions.margin.top - dimensions.margin.bottom;

  // 3. Draw canvas

  const wrapper = d3
    .select("#wrapper")
    .append("svg")
    .attr("width", dimensions.width)
    .attr("height", dimensions.height);

  const bounds = wrapper
    .append("g")
    .style(
      "transform",
      `translate(${dimensions.margin.left}px, ${dimensions.margin.top}px)`
    );

  // init static elements
  bounds.append("g").attr("class", "bins");
  bounds.append("line").attr("class", "mean");
  bounds
    .append("g")
    .attr("class", "x-axis")
    .style("transform", `translateY(${dimensions.boundedHeight}px)`)
    .append("text")
    .attr("class", "x-axis-label")
    .attr("x", dimensions.boundedWidth / 2)
    .attr("y", dimensions.margin.bottom - 10);

  const drawHistogram = metric => {
    const metricAccessor = d => d[metric];
    const yAccessor = d => d.length;

    // 4. Create scales

    const xScale = d3
      .scaleLinear()
      .domain(d3.extent(dataset, metricAccessor))
      .range([0, dimensions.boundedWidth])
      .nice();

    const binsGenerator = d3
      .histogram()
      .domain(xScale.domain())
      .value(metricAccessor)
      .thresholds(12);

    const bins = binsGenerator(dataset);

    const yScale = d3
      .scaleLinear()
      .domain([0, d3.max(bins, yAccessor)])
      .range([dimensions.boundedHeight, 0])
      .nice();

    // 5. Draw data

    const barPadding = 1;

    const exitTransition = d3.transition().duration(600);

    const updateTransition = exitTransition
      .transition()
      .duration(600)
      .ease(d3.easeBackIn);

    let binGroups = bounds
      .select(".bins")
      .selectAll(".bin")
      .data(bins);

    const oldBinGroups = binGroups.exit();

    oldBinGroups
      .selectAll("rect")
      .style("fill", "red")
      .transition(exitTransition)
      .attr("y", dimensions.boundedHeight)
      .attr("height", 0);

    oldBinGroups
      .selectAll("text")
      .transition(exitTransition)
      .attr("y", dimensions.boundedHeight);

    oldBinGroups.transition(exitTransition).remove();

    const newBinGroups = binGroups
      .enter()
      .append("g")
      .attr("class", "bin");

    newBinGroups
      .append("rect")
      .attr("height", 0)
      .attr("x", d => xScale(d.x0) + barPadding)
      .attr("y", dimensions.boundedHeight)
      .attr("width", d => d3.max([0, xScale(d.x1) - xScale(d.x0) - barPadding]))
      .style("fill", "yellowgreen");

    newBinGroups
      .append("text")
      .attr("x", d => xScale(d.x0) + (xScale(d.x1) - xScale(d.x0)) / 2)
      .attr("y", dimensions.boundedHeight);

    // update binGroups to include new points
    binGroups = newBinGroups.merge(binGroups);

    const barRects = binGroups
      .select("rect")
      .transition(updateTransition)
      .attr("x", d => xScale(d.x0) + barPadding)
      .attr("y", d => yScale(yAccessor(d)))
      .attr("height", d => dimensions.boundedHeight - yScale(yAccessor(d)))
      .attr("width", d => d3.max([0, xScale(d.x1) - xScale(d.x0) - barPadding]))
      .transition()
      .style("fill", "cornflowerblue");

    const barText = binGroups
      .select("text")
      .transition(updateTransition)
      .attr("x", d => xScale(d.x0) + (xScale(d.x1) - xScale(d.x0)) / 2)
      .attr("y", d => yScale(yAccessor(d)) - 5)
      .text(d => yAccessor(d) || "");

    const mean = d3.mean(dataset, metricAccessor);

    const meanLine = bounds
      .selectAll(".mean")
      .transition(updateTransition)
      .attr("x1", xScale(mean))
      .attr("x2", xScale(mean))
      .attr("y1", -20)
      .attr("y2", dimensions.boundedHeight);

    // 6. Draw peripherals

    const xAxisGenerator = d3.axisBottom().scale(xScale);

    const xAxis = bounds
      .select(".x-axis")
      .transition(updateTransition)
      .call(xAxisGenerator);

    const xAxisLabel = xAxis.select(".x-axis-label").text(metric);
  };

  const metrics = [
    "windSpeed",
    "moonPhase",
    "dewPoint",
    "humidity",
    "uvIndex",
    "windBearing",
    "temperatureMin",
    "temperatureMax"
  ];
  let selectedMetricIndex = 0;
  drawHistogram(metrics[selectedMetricIndex]);

  const button = d3
    .select("body")
    .append("button")
    .text("Change metric");

  button.node().addEventListener("click", onClick);
  function onClick() {
    selectedMetricIndex = (selectedMetricIndex + 1) % (metrics.length - 1);
    drawHistogram(metrics[selectedMetricIndex]);
  }
}
drawBars();

              
            
!
999px

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