Module: Nvd3Helper

Defined in:
app/helpers/nvd3_helper.rb

Instance Method Summary collapse

Instance Method Details

#nvd3_area ⇒ Object 



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# File 'app/helpers/nvd3_helper.rb', line 285

def nvd3_area
  html = "<div id=\"chart\" style=\"min-width: 310px; height: 400px; margin: 0 auto\"><svg></svg></div>".html_safe
  script = javascript_tag do
    <<-END.html_safe
    var margin = {top: 20, right: 20, bottom: 30, left: 50},
        width = 960 - margin.left - margin.right,
        height = 500 - margin.top - margin.bottom;

    var parseDate = d3.time.format("%y-%b-%d").parse,
        formatPercent = d3.format(".0%");

    var x = d3.time.scale()
        .range([0, width]);

    var y = d3.scale.linear()
        .range([height, 0]);

    var color = d3.scale.category20();

    var xAxis = d3.svg.axis()
        .scale(x)
        .orient("bottom");

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

    var area = d3.svg.area()
        .x(function(d) { return x(d.date); })
        .y0(function(d) { return y(d.y0); })
        .y1(function(d) { return y(d.y0 + d.y); });

    var stack = d3.layout.stack()
        .values(function(d) { return d.values; });

    var svg = d3.select("body").append("svg")
        .attr("width", width + margin.left + margin.right)
        .attr("height", height + margin.top + margin.bottom)
      .append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

    d3.tsv("data.tsv", function(error, data) {
      if (error) throw error;

      color.domain(d3.keys(data[0]).filter(function(key) { return key !== "date"; }));

      data.forEach(function(d) {
        d.date = parseDate(d.date);
      });

      var browsers = stack(color.domain().map(function(name) {
        return {
          name: name,
          values: data.map(function(d) {
            return {date: d.date, y: d[name] / 100};
          })
        };
      }));

      x.domain(d3.extent(data, function(d) { return d.date; }));

      var browser = svg.selectAll(".browser")
          .data(browsers)
        .enter().append("g")
          .attr("class", "browser");

      browser.append("path")
          .attr("class", "area")
          .attr("d", function(d) { return area(d.values); })
          .style("fill", function(d) { return color(d.name); });

      browser.append("text")
          .datum(function(d) { return {name: d.name, value: d.values[d.values.length - 1]}; })
          .attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.y0 + d.value.y / 2) + ")"; })
          .attr("x", -6)
          .attr("dy", ".35em")
          .text(function(d) { return d.name; });

      svg.append("g")
          .attr("class", "x axis")
          .attr("transform", "translate(0," + height + ")")
          .call(xAxis);

      svg.append("g")
          .attr("class", "y axis")
          .call(yAxis);
    });

    END
  end
  return html + script

end

#nvd3_bar ⇒ Object 



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# File 'app/helpers/nvd3_helper.rb', line 77

def nvd3_bar
  html = "".html_safe
  # html = "<div id=\"chart\" style=\"min-width: 310px; height: 400px; margin: 0 auto\"><svg></svg></div>".html_safe
  script = javascript_tag do
    <<-END.html_safe
    var n = 4,
        m = 58,
        stack = d3.layout.stack(),
        layers = stack(d3.range(n).map(function() { return bumpLayer(m, .1); })),
        yGroupMax = d3.max(layers, function(layer) { return d3.max(layer, function(d) { return d.y; }); }),
        yStackMax = d3.max(layers, function(layer) { return d3.max(layer, function(d) { return d.y0 + d.y; }); });

    var margin = {top: 40, right: 10, bottom: 20, left: 10},
        width = 960 - margin.left - margin.right,
        height = 500 - margin.top - margin.bottom;

    var x = d3.scale.ordinal()
        .domain(d3.range(m))
        .rangeRoundBands([0, width], .08);

    var y = d3.scale.linear()
        .domain([0, yStackMax])
        .range([height, 0]);

    var color = d3.scale.linear()
        .domain([0, n - 1])
        .range(["#aad", "#556"]);

    var xAxis = d3.svg.axis()
        .scale(x)
        .tickSize(0)
        .tickPadding(6)
        .orient("bottom");

    var svg = d3.select("body").append("svg")
        .attr("width", width + margin.left + margin.right)
        .attr("height", height + margin.top + margin.bottom)
      .append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

    var layer = svg.selectAll(".layer")
        .data(layers)
      .enter().append("g")
        .attr("class", "layer")
        .style("fill", function(d, i) { return color(i); });

    var rect = layer.selectAll("rect")
        .data(function(d) { return d; })
      .enter().append("rect")
        .attr("x", function(d) { return x(d.x); })
        .attr("y", height)
        .attr("width", x.rangeBand())
        .attr("height", 0);

    rect.transition()
        .delay(function(d, i) { return i * 10; })
        .attr("y", function(d) { return y(d.y0 + d.y); })
        .attr("height", function(d) { return y(d.y0) - y(d.y0 + d.y); });

    svg.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + height + ")")
        .call(xAxis);

    d3.selectAll("input").on("change", change);

    var timeout = setTimeout(function() {
      d3.select("input[value=\\"grouped\\"]").property("checked", true).each(change);
    }, 2000);

    function change() {
      clearTimeout(timeout);
      if (this.value === "grouped") transitionGrouped();
      else transitionStacked();
    }

    function transitionGrouped() {
      y.domain([0, yGroupMax]);

      rect.transition()
          .duration(500)
          .delay(function(d, i) { return i * 10; })
          .attr("x", function(d, i, j) { return x(d.x) + x.rangeBand() / n * j; })
          .attr("width", x.rangeBand() / n)
        .transition()
          .attr("y", function(d) { return y(d.y); })
          .attr("height", function(d) { return height - y(d.y); });
    }

    function transitionStacked() {
      y.domain([0, yStackMax]);

      rect.transition()
          .duration(500)
          .delay(function(d, i) { return i * 10; })
          .attr("y", function(d) { return y(d.y0 + d.y); })
          .attr("height", function(d) { return y(d.y0) - y(d.y0 + d.y); })
        .transition()
          .attr("x", function(d) { return x(d.x); })
          .attr("width", x.rangeBand());
    }

    function bumpLayer(n, o) {

      function bump(a) {
        var x = 1 / (.1 + Math.random()),
            y = 2 * Math.random() - .5,
            z = 10 / (.1 + Math.random());
        for (var i = 0; i < n; i++) {
          var w = (i / n - y) * z;
          a[i] += x * Math.exp(-w * w);
        }
      }

      var a = [], i;
      for (i = 0; i < n; ++i) a[i] = o + o * Math.random();
      for (i = 0; i < 5; ++i) bump(a);
      return a.map(function(d, i) { return {x: i, y: Math.max(0, d)}; });
    }

    END
  end
  return html + script

end

#nvd3_line ⇒ Object

NVD3



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# File 'app/helpers/nvd3_helper.rb', line 4

def nvd3_line
  html = "".html_safe
  script = javascript_tag do
    <<-END.html_safe
    var margin = {top: 20, right: 20, bottom: 30, left: 50},
        width = 960 - margin.left - margin.right,
        height = 500 - margin.top - margin.bottom;

    var formatDate = d3.time.format("%d-%b-%y");

    var x = d3.time.scale()
        .range([0, width]);

    var y = d3.scale.linear()
        .range([height, 0]);

    var xAxis = d3.svg.axis()
        .scale(x)
        .orient("bottom");

    var yAxis = d3.svg.axis()
        .scale(y)
        .orient("left");

    var line = d3.svg.line()
        .x(function(d) { return x(d.date); })
        .y(function(d) { return y(d.close); });

    var svg = d3.select("body").append("svg")
        .attr("width", width + margin.left + margin.right)
        .attr("height", height + margin.top + margin.bottom)
      .append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

    d3.tsv("data1.tsv", type, function(error, data) {
      if (error) throw error;

      x.domain(d3.extent(data, function(d) { return d.date; }));
      y.domain(d3.extent(data, function(d) { return d.close; }));

      svg.append("g")
          .attr("class", "x axis")
          .attr("transform", "translate(0," + height + ")")
          .call(xAxis);

      svg.append("g")
          .attr("class", "y axis")
          .call(yAxis)
        .append("text")
          .attr("transform", "rotate(-90)")
          .attr("y", 6)
          .attr("dy", ".71em")
          .style("text-anchor", "end")
          .text("Price ($)");

      svg.append("path")
          .datum(data)
          .attr("class", "line")
          .attr("d", line);
    });

    function type(d) {
      d.date = formatDate.parse(d.date);
      d.close = +d.close;
      return d;
    }

    END
  end
  return html + script
end

#nvd3_pie ⇒ Object 



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# File 'app/helpers/nvd3_helper.rb', line 203

def nvd3_pie
  html = "<div id=\"chart\" style=\"min-width: 310px; height: 400px; margin: 0 auto\"><svg></svg></div>".html_safe
  script = javascript_tag do
    <<-END.html_safe
    nv.addGraph(function() {
      var chart = nv.models.pieChart()
          .x(function(d) { return d.label })
          .y(function(d) { return d.value })
          .showLabels(true);

        d3.select("#chart svg")
            .datum(exampleData())
            .transition().duration(350)
            .call(chart);

      return chart;
    });

    //Donut chart example
    nv.addGraph(function() {
      var chart = nv.models.pieChart()
          .x(function(d) { return d.label })
          .y(function(d) { return d.value })
          .showLabels(true)     //Display pie labels
          .labelThreshold(.05)  //Configure the minimum slice size for labels to show up
          .labelType("percent") //Configure what type of data to show in the label. Can be "key", "value" or "percent"
          .donut(true)          //Turn on Donut mode. Makes pie chart look tasty!
          .donutRatio(0.35)     //Configure how big you want the donut hole size to be.
          ;

        d3.select("#chart2 svg")
            .datum(exampleData())
            .transition().duration(350)
            .call(chart);

      return chart;
    });

    //Pie chart example data. Note how there is only a single array of key-value pairs.
    function exampleData() {
      return  [
          {
            "label": "One",
            "value" : 29.765957771107
          } ,
          {
            "label": "Two",
            "value" : 0
          } ,
          {
            "label": "Three",
            "value" : 32.807804682612
          } ,
          {
            "label": "Four",
            "value" : 196.45946739256
          } ,
          {
            "label": "Five",
            "value" : 0.19434030906893
          } ,
          {
            "label": "Six",
            "value" : 98.079782601442
          } ,
          {
            "label": "Seven",
            "value" : 13.925743130903
          } ,
          {
            "label": "Eight",
            "value" : 5.1387322875705
          }
        ];
    }

    END
  end
  return html + script

end