Grouped horizontal bar chart.

This is an example of a horizontally grouped bar chart. It allows you to easily see the difference between different series of data.

forked from erikvullings's block: Grouped horizontal bar chart.

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

/*
.chart rect {
  fill: steelblue;
}
*/
.chart .legend {
  fill: black;
  font: 14px sans-serif;
  text-anchor: start;
  font-size: 12px;
}

.chart text {
  fill: white;
  font: 10px sans-serif;
  text-anchor: end;
}

.chart .label {
  fill: black;
  font: 14px sans-serif;
  text-anchor: end;
}

.bar:hover {
  fill: brown;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

</style>
<svg class="chart"></svg>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script>

var inflationRatios = [1, 1, 1.002, 1.002, 1.013, 1.033, 1.054, 1.087];

var educationalprograms = ["Administrative Support", "Comm Hlth - Prevention - Hlth Education", "Community Arts & Education", "Community Arts & Education-General Admin", "County Education Services", "Educational Programs",  ];

var otherprograms = [];

var data = {};

d3.csv("Budget.csv", function(d) {

//accessor function

// Filter out educational Programs
  if (educationalprograms.indexOf(d["Program"]) >= 0 && d["Revenue or Spending"] === "Spending")
    return {
      program: d["Program"],
      amount: +d["Amount"] * inflationRatios[2017-(d["Fiscal Year"])]
    };
  else
    return null;

// callback function
}, function(error, rows) {

// console.table(educationalprogramsNest);

data.labels = educationalprograms;

data.series = [
    {
      label: function(d) { return d["Program"]; }

}
  ];

console.log(data.series);

});

var harddata = {
  labels: [ 
    'Education', 'maintainability', 'accessibility',
    'uptime', 'functionality', 'impact'
  ],
  series: [
    {
      label: '2012',
      values: [4, 8, 15, 16, 23, 42]
    },
    {
      label: '2013',
      values: [12, 43, 22, 11, 73, 25]
    },
    {
      label: '2014',
      values: [31, 28, 14, 8, 15, 21]
    },]
};

var config = {};

config.svg = {width: 960, height: 500};
config.margin = {top: 50, right: 10, bottom: 20, left: 40};

config.plot = {
  width: config.svg.width - config.margin.right - config.margin.left, 
  height: config.svg.height - config.margin.top - config.margin.bottom
};

var chartWidth       = config.plot.width,
    barHeight        = 20,
    groupHeight      = barHeight * harddata.series.length,
    gapBetweenGroups = 10,
    spaceForLabels   = 110,
    spaceForLegend   = 150;

// Zip the series harddata together (first values, second values, etc.)
var zippedData = [];
for (var i=0; i<harddata.labels.length; i++) {
  for (var j=0; j<harddata.series.length; j++) {
    zippedData.push(harddata.series[j].values[i]);
  }
}

// Color scale
var color = d3.scale.category20();
var chartHeight = barHeight * zippedData.length + gapBetweenGroups * harddata.labels.length;

var x = d3.scale.linear()
    .domain([0, d3.max(zippedData)])
    .range([0, chartWidth]);

var y = d3.scale.linear()
    .range([chartHeight + gapBetweenGroups, 0]);

var yAxis = d3.svg.axis()
    .scale(y)
    .tickFormat('')
    .tickSize(0)
    .orient("left");

// Specify the chart area and dimensions
var chart = d3.select(".chart")
    .attr("width", config.svg.width)
    .attr("height", config.svg.height);

// Create bars
var bar = chart.selectAll("g")
    .data(zippedData)
    .enter().append("g")
    .attr("transform", function(d, i) {
      return "translate(" + spaceForLabels + "," + (i * barHeight + gapBetweenGroups * (0.5 + Math.floor(i/harddata.series.length))) + ")";
    });

// Create rectangles of the correct width
bar.append("rect")
    .attr("fill", function(d,i) { return color(i % harddata.series.length); })
    .attr("class", "bar")
    .attr("width", x)
    .attr("height", barHeight - 1);

// Add text label in bar
bar.append("text")
    .attr("x", function(d) { return x(d) - 3; })
    .attr("y", barHeight / 2)
    .attr("fill", "red")
    .attr("dy", ".35em")
    .text(function(d) { return d; });

// Draw labels
bar.append("text")
    .attr("class", "label")
    .attr("x", function(d) { return - 10; })
    .attr("y", groupHeight / 2)
    .attr("dy", ".35em")
    .text(function(d,i) {
      if (i % harddata.series.length === 0)
        return harddata.labels[Math.floor(i/harddata.series.length)];
      else
        return ""});

chart.append("g")
      .attr("class", "y axis")
      .attr("transform", "translate(" + spaceForLabels + ", " + -gapBetweenGroups/2 + ")")
      .call(yAxis);

// Draw legend
var legendRectSize = 18,
    legendSpacing  = 4;

var legend = chart.selectAll('.legend')
    .data(harddata.series)
    .enter()
    .append('g')
    .attr('transform', function (d, i) {
        var height = legendRectSize + legendSpacing;
        var offset = -gapBetweenGroups/2;
        var horz = chartWidth + 40 - legendRectSize - 150;
        var vert = i * height - offset + config.plot.height;
        return 'translate(' + horz + ',' + vert + ')';
    });

legend.append('rect')
    .attr('width', legendRectSize)
    .attr('height', legendRectSize)
    .style('fill', function (d, i) { return color(i); })
    .style('stroke', function (d, i) { return color(i); });

legend.append('text')
    .attr('class', 'legend')
    .attr('x', legendRectSize + legendSpacing)
    .attr('y', legendRectSize - legendSpacing)
    .text(function (d) { return d.label; });

</script>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js