vertical lines and labels with nvd3 + rCharts

rCharts + nvd3 with vertical lines and labels

In response to this Stack Overflow question I thought it would be helpful to demonstrate one way to add vertical lines and labels to a nvd3 time series lineWithFocusChart. Hopefully it will help both the R rCharts and the straight Javascript nvd3 user. I solved a small syncing problem with the brushing by adding a window.setTimeout on brushend. It seems to work fairly well.

Please let me know if there might be a better way to handle.

rCharts viewer demo

rCharts live code example

R code

<!doctype HTML>
<meta charset = 'utf-8'>
<html>
  <head>
    <link rel='stylesheet' href='https://nvd3.org/assets/css/nv.d3.css'>
    
    <script src='https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js' type='text/javascript'></script>
    <script src='https://d3js.org/d3.v3.min.js' type='text/javascript'></script>
    <script src='https://timelyportfolio.github.io/rcharts_nvd3_tests/libraries/widgets/nvd3/js/nv.d3.min-new.js' type='text/javascript'></script>
    <script src='https://nvd3.org/assets/lib/fisheye.js' type='text/javascript'></script>
    
    <style>
    .rChart {
      display: block;
      margin-left: auto; 
      margin-right: auto;
      width: 800px;
      height: 400px;
    }  
    </style>
    
  </head>
  <body >
    
    <div id = 'chart18e87f6e3d72' class = 'rChart nvd3'></div>    
    
      <script type='text/javascript'>
        $(document).ready(function(){
          drawchart18e87f6e3d72(  );
        });
      function drawchart18e87f6e3d72(  ){  
        var opts = {
 "dom": "chart18e87f6e3d72",
"width":    800,
"height":    400,
"x": "date",
"y": "value",
"group": "variable",
"type": "lineWithFocusChart",
"id": "chart18e87f6e3d72" 
};
        var data = [
 {
 "date":           -916,
"variable": "uempmed",
"value":            4.5 
},
{
 "date":           -885,
"variable": "uempmed",
"value":            4.7 
},
{
 "date":           -854,
"variable": "uempmed",
"value":            4.6 
},
{
 "date":           -824,
"variable": "uempmed",
"value":            4.9 
},
{
 "date":           -793,
"variable": "uempmed",
"value":            4.7 
},
{
 "date":           -763,
"variable": "uempmed",
"value":            4.8 
},
{
 "date":           -732,
"variable": "uempmed",
"value":            5.1 
},
{
 "date":           -701,
"variable": "uempmed",
"value":            4.5 
},
{
 "date":           -672,
"variable": "uempmed",
"value":            4.1 
},
{
 "date":           -641,
"variable": "uempmed",
"value":            4.6 
},
{
 "date":           -611,
"variable": "uempmed",
"value":            4.4 
},
{
 "date":           -580,
"variable": "uempmed",
"value":            4.4 
},
{
 "date":           -550,
"variable": "uempmed",
"value":            4.5 
},
{
 "date":           -519,
"variable": "uempmed",
"value":            4.2 
},
{
 "date":           -488,
"variable": "uempmed",
"value":            4.6 
},
{
 "date":           -458,
"variable": "uempmed",
"value":            4.8 
},
{
 "date":           -427,
"variable": "uempmed",
"value":            4.4 
},
{
 "date":           -397,
"variable": "uempmed",
"value":            4.4 
},
{
 "date":           -366,
"variable": "uempmed",
"value":            4.4 
},
{
 "date":           -335,
"variable": "uempmed",
"value":            4.9 
},
{
 "date":           -307,
"variable": "uempmed",
"value":              4 
},
{
 "date":           -276,
"variable": "uempmed",
"value":              4 
},
{
 "date":           -246,
"variable": "uempmed",
"value":            4.2 
},
{
 "date":           -215,
"variable": "uempmed",
"value":            4.4 
},
{
 "date":           -185,
"variable": "uempmed",
"value":            4.4 
},
{
 "date":           -154,
"variable": "uempmed",
"value":            4.4 
},
{
 "date":           -123,
"variable": "uempmed",
"value":            4.7 
},
{
 "date":            -93,
"variable": "uempmed",
"value":            4.5 
},
{
 "date":            -62,
"variable": "uempmed",
"value":            4.8 
},
{
 "date":            -32,
"variable": "uempmed",
"value":            4.6 
},
{
 "date":             -1,
"variable": "uempmed",
"value":            4.6 
},
{
 "date":             30,
"variable": "uempmed",
"value":            4.5 
},
{
 "date":             58,
"variable": "uempmed",
"value":            4.6 
},
{
 "date":             89,
"variable": "uempmed",
"value":            4.1 
},
{
 "date":            119,
"variable": "uempmed",
"value":            4.7 
},
{
 "date":            150,
"variable": "uempmed",
"value":            4.9 
},
{
 "date":            180,
"variable": "uempmed",
"value":            5.1 
},
{
 "date":            211,
"variable": "uempmed",
"value":            5.4 
},
{
 "date":            242,
"variable": "uempmed",
"value":            5.2 
},
{
 "date":            272,
"variable": "uempmed",
"value":            5.2 
},
{
 "date":            303,
"variable": "uempmed",
"value":            5.6 
},
{
 "date":            333,
"variable": "uempmed",
"value":            5.9 
},
{
 "date":            364,
"variable": "uempmed",
"value":            6.2 
},
{
 "date":            395,
"variable": "uempmed",
"value":            6.3 
},
{
 "date":            423,
"variable": "uempmed",
"value":            6.4 
},
{
 "date":            454,
"variable": "uempmed",
"value":            6.5 
},
{
 "date":            484,
"variable": "uempmed",
"value":            6.7 
},
{
 "date":            515,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":            545,
"variable": "uempmed",
"value":            6.2 
},
{
 "date":            576,
"variable": "uempmed",
"value":            6.4 
},
{
 "date":            607,
"variable": "uempmed",
"value":            5.8 
},
{
 "date":            637,
"variable": "uempmed",
"value":            6.5 
},
{
 "date":            668,
"variable": "uempmed",
"value":            6.4 
},
{
 "date":            698,
"variable": "uempmed",
"value":            6.2 
},
{
 "date":            729,
"variable": "uempmed",
"value":            6.2 
},
{
 "date":            760,
"variable": "uempmed",
"value":            6.6 
},
{
 "date":            789,
"variable": "uempmed",
"value":            6.6 
},
{
 "date":            820,
"variable": "uempmed",
"value":            6.7 
},
{
 "date":            850,
"variable": "uempmed",
"value":            6.6 
},
{
 "date":            881,
"variable": "uempmed",
"value":            5.4 
},
{
 "date":            911,
"variable": "uempmed",
"value":            6.1 
},
{
 "date":            942,
"variable": "uempmed",
"value":              6 
},
{
 "date":            973,
"variable": "uempmed",
"value":            5.6 
},
{
 "date":           1003,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":           1034,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":           1064,
"variable": "uempmed",
"value":            6.1 
},
{
 "date":           1095,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":           1126,
"variable": "uempmed",
"value":            5.2 
},
{
 "date":           1154,
"variable": "uempmed",
"value":            5.5 
},
{
 "date":           1185,
"variable": "uempmed",
"value":              5 
},
{
 "date":           1215,
"variable": "uempmed",
"value":            4.9 
},
{
 "date":           1246,
"variable": "uempmed",
"value":              5 
},
{
 "date":           1276,
"variable": "uempmed",
"value":            5.2 
},
{
 "date":           1307,
"variable": "uempmed",
"value":            4.9 
},
{
 "date":           1338,
"variable": "uempmed",
"value":            5.4 
},
{
 "date":           1368,
"variable": "uempmed",
"value":            5.5 
},
{
 "date":           1399,
"variable": "uempmed",
"value":            5.1 
},
{
 "date":           1429,
"variable": "uempmed",
"value":            4.7 
},
{
 "date":           1460,
"variable": "uempmed",
"value":              5 
},
{
 "date":           1491,
"variable": "uempmed",
"value":            5.1 
},
{
 "date":           1519,
"variable": "uempmed",
"value":            4.8 
},
{
 "date":           1550,
"variable": "uempmed",
"value":              5 
},
{
 "date":           1580,
"variable": "uempmed",
"value":            4.6 
},
{
 "date":           1611,
"variable": "uempmed",
"value":            5.3 
},
{
 "date":           1641,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":           1672,
"variable": "uempmed",
"value":              5 
},
{
 "date":           1703,
"variable": "uempmed",
"value":            5.3 
},
{
 "date":           1733,
"variable": "uempmed",
"value":            5.5 
},
{
 "date":           1764,
"variable": "uempmed",
"value":            5.2 
},
{
 "date":           1794,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":           1825,
"variable": "uempmed",
"value":            6.3 
},
{
 "date":           1856,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           1884,
"variable": "uempmed",
"value":            7.2 
},
{
 "date":           1915,
"variable": "uempmed",
"value":            8.7 
},
{
 "date":           1945,
"variable": "uempmed",
"value":            9.4 
},
{
 "date":           1976,
"variable": "uempmed",
"value":            8.8 
},
{
 "date":           2006,
"variable": "uempmed",
"value":            8.6 
},
{
 "date":           2037,
"variable": "uempmed",
"value":            9.2 
},
{
 "date":           2068,
"variable": "uempmed",
"value":            9.2 
},
{
 "date":           2098,
"variable": "uempmed",
"value":            8.6 
},
{
 "date":           2129,
"variable": "uempmed",
"value":            9.5 
},
{
 "date":           2159,
"variable": "uempmed",
"value":              9 
},
{
 "date":           2190,
"variable": "uempmed",
"value":              9 
},
{
 "date":           2221,
"variable": "uempmed",
"value":            8.2 
},
{
 "date":           2250,
"variable": "uempmed",
"value":            8.7 
},
{
 "date":           2281,
"variable": "uempmed",
"value":            8.2 
},
{
 "date":           2311,
"variable": "uempmed",
"value":            8.3 
},
{
 "date":           2342,
"variable": "uempmed",
"value":            7.8 
},
{
 "date":           2372,
"variable": "uempmed",
"value":            7.7 
},
{
 "date":           2403,
"variable": "uempmed",
"value":            7.9 
},
{
 "date":           2434,
"variable": "uempmed",
"value":            7.8 
},
{
 "date":           2464,
"variable": "uempmed",
"value":            7.7 
},
{
 "date":           2495,
"variable": "uempmed",
"value":            8.4 
},
{
 "date":           2525,
"variable": "uempmed",
"value":              8 
},
{
 "date":           2556,
"variable": "uempmed",
"value":            7.5 
},
{
 "date":           2587,
"variable": "uempmed",
"value":            7.2 
},
{
 "date":           2615,
"variable": "uempmed",
"value":            7.2 
},
{
 "date":           2646,
"variable": "uempmed",
"value":            7.3 
},
{
 "date":           2676,
"variable": "uempmed",
"value":            7.9 
},
{
 "date":           2707,
"variable": "uempmed",
"value":            6.2 
},
{
 "date":           2737,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           2768,
"variable": "uempmed",
"value":              7 
},
{
 "date":           2799,
"variable": "uempmed",
"value":            6.7 
},
{
 "date":           2829,
"variable": "uempmed",
"value":            6.9 
},
{
 "date":           2860,
"variable": "uempmed",
"value":              7 
},
{
 "date":           2890,
"variable": "uempmed",
"value":            6.8 
},
{
 "date":           2921,
"variable": "uempmed",
"value":            6.5 
},
{
 "date":           2952,
"variable": "uempmed",
"value":            6.7 
},
{
 "date":           2980,
"variable": "uempmed",
"value":            6.2 
},
{
 "date":           3011,
"variable": "uempmed",
"value":            6.1 
},
{
 "date":           3041,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":           3072,
"variable": "uempmed",
"value":              6 
},
{
 "date":           3102,
"variable": "uempmed",
"value":            5.8 
},
{
 "date":           3133,
"variable": "uempmed",
"value":            5.8 
},
{
 "date":           3164,
"variable": "uempmed",
"value":            5.6 
},
{
 "date":           3194,
"variable": "uempmed",
"value":            5.9 
},
{
 "date":           3225,
"variable": "uempmed",
"value":            5.5 
},
{
 "date":           3255,
"variable": "uempmed",
"value":            5.6 
},
{
 "date":           3286,
"variable": "uempmed",
"value":            5.9 
},
{
 "date":           3317,
"variable": "uempmed",
"value":            5.9 
},
{
 "date":           3345,
"variable": "uempmed",
"value":            5.9 
},
{
 "date":           3376,
"variable": "uempmed",
"value":            5.4 
},
{
 "date":           3406,
"variable": "uempmed",
"value":            5.6 
},
{
 "date":           3437,
"variable": "uempmed",
"value":            5.6 
},
{
 "date":           3467,
"variable": "uempmed",
"value":            5.9 
},
{
 "date":           3498,
"variable": "uempmed",
"value":            4.8 
},
{
 "date":           3529,
"variable": "uempmed",
"value":            5.5 
},
{
 "date":           3559,
"variable": "uempmed",
"value":            5.5 
},
{
 "date":           3590,
"variable": "uempmed",
"value":            5.3 
},
{
 "date":           3620,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":           3651,
"variable": "uempmed",
"value":            5.3 
},
{
 "date":           3682,
"variable": "uempmed",
"value":            5.8 
},
{
 "date":           3711,
"variable": "uempmed",
"value":              6 
},
{
 "date":           3742,
"variable": "uempmed",
"value":            5.8 
},
{
 "date":           3772,
"variable": "uempmed",
"value":            5.7 
},
{
 "date":           3803,
"variable": "uempmed",
"value":            6.4 
},
{
 "date":           3833,
"variable": "uempmed",
"value":              7 
},
{
 "date":           3864,
"variable": "uempmed",
"value":            7.5 
},
{
 "date":           3895,
"variable": "uempmed",
"value":            7.7 
},
{
 "date":           3925,
"variable": "uempmed",
"value":            7.5 
},
{
 "date":           3956,
"variable": "uempmed",
"value":            7.7 
},
{
 "date":           3986,
"variable": "uempmed",
"value":            7.5 
},
{
 "date":           4017,
"variable": "uempmed",
"value":            7.4 
},
{
 "date":           4048,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           4076,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           4107,
"variable": "uempmed",
"value":            7.4 
},
{
 "date":           4137,
"variable": "uempmed",
"value":            6.9 
},
{
 "date":           4168,
"variable": "uempmed",
"value":            6.6 
},
{
 "date":           4198,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           4229,
"variable": "uempmed",
"value":            7.2 
},
{
 "date":           4260,
"variable": "uempmed",
"value":            6.8 
},
{
 "date":           4290,
"variable": "uempmed",
"value":            6.8 
},
{
 "date":           4321,
"variable": "uempmed",
"value":            6.9 
},
{
 "date":           4351,
"variable": "uempmed",
"value":            6.9 
},
{
 "date":           4382,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           4413,
"variable": "uempmed",
"value":            7.5 
},
{
 "date":           4441,
"variable": "uempmed",
"value":            7.7 
},
{
 "date":           4472,
"variable": "uempmed",
"value":            8.1 
},
{
 "date":           4502,
"variable": "uempmed",
"value":            8.5 
},
{
 "date":           4533,
"variable": "uempmed",
"value":            9.5 
},
{
 "date":           4563,
"variable": "uempmed",
"value":            8.5 
},
{
 "date":           4594,
"variable": "uempmed",
"value":            8.7 
},
{
 "date":           4625,
"variable": "uempmed",
"value":            9.5 
},
{
 "date":           4655,
"variable": "uempmed",
"value":            9.7 
},
{
 "date":           4686,
"variable": "uempmed",
"value":             10 
},
{
 "date":           4716,
"variable": "uempmed",
"value":           10.2 
},
{
 "date":           4747,
"variable": "uempmed",
"value":           11.1 
},
{
 "date":           4778,
"variable": "uempmed",
"value":            9.8 
},
{
 "date":           4806,
"variable": "uempmed",
"value":           10.4 
},
{
 "date":           4837,
"variable": "uempmed",
"value":           10.9 
},
{
 "date":           4867,
"variable": "uempmed",
"value":           12.3 
},
{
 "date":           4898,
"variable": "uempmed",
"value":           11.3 
},
{
 "date":           4928,
"variable": "uempmed",
"value":           10.1 
},
{
 "date":           4959,
"variable": "uempmed",
"value":            9.3 
},
{
 "date":           4990,
"variable": "uempmed",
"value":            9.3 
},
{
 "date":           5020,
"variable": "uempmed",
"value":            9.4 
},
{
 "date":           5051,
"variable": "uempmed",
"value":            9.3 
},
{
 "date":           5081,
"variable": "uempmed",
"value":            8.7 
},
{
 "date":           5112,
"variable": "uempmed",
"value":            9.1 
},
{
 "date":           5143,
"variable": "uempmed",
"value":            8.3 
},
{
 "date":           5172,
"variable": "uempmed",
"value":            8.3 
},
{
 "date":           5203,
"variable": "uempmed",
"value":            8.2 
},
{
 "date":           5233,
"variable": "uempmed",
"value":            9.1 
},
{
 "date":           5264,
"variable": "uempmed",
"value":            7.5 
},
{
 "date":           5294,
"variable": "uempmed",
"value":            7.5 
},
{
 "date":           5325,
"variable": "uempmed",
"value":            7.3 
},
{
 "date":           5356,
"variable": "uempmed",
"value":            7.6 
},
{
 "date":           5386,
"variable": "uempmed",
"value":            7.2 
},
{
 "date":           5417,
"variable": "uempmed",
"value":            7.2 
},
{
 "date":           5447,
"variable": "uempmed",
"value":            7.3 
},
{
 "date":           5478,
"variable": "uempmed",
"value":            6.8 
},
{
 "date":           5509,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           5537,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           5568,
"variable": "uempmed",
"value":            6.9 
},
{
 "date":           5598,
"variable": "uempmed",
"value":            6.9 
},
{
 "date":           5629,
"variable": "uempmed",
"value":            6.6 
},
{
 "date":           5659,
"variable": "uempmed",
"value":            6.9 
},
{
 "date":           5690,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           5721,
"variable": "uempmed",
"value":            6.9 
},
{
 "date":           5751,
"variable": "uempmed",
"value":            7.1 
},
{
 "date":           5782,
"variable": "uempmed",
"value":              7 
},
{
 "date":           5812,
"variable": "uempmed",
"value":            6.8 
},
{
 "date":           5843,
"variable": "uempmed",
"value":            6.7 
},
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{
 "date":          13421,
"variable": "psavert",
"value":           -0.8 
},
{
 "date":          13452,
"variable": "psavert",
"value":           -0.9 
},
{
 "date":          13482,
"variable": "psavert",
"value":           -1.1 
},
{
 "date":          13513,
"variable": "psavert",
"value":           -0.9 
},
{
 "date":          13544,
"variable": "psavert",
"value":             -1 
},
{
 "date":          13572,
"variable": "psavert",
"value":           -0.7 
},
{
 "date":          13603,
"variable": "psavert",
"value":           -1.3 
} 
];

if(!(opts.type==='pieChart' || opts.type==='sparklinePlus' || opts.type==='bulletChart')) {
          var data = d3.nest()
          .key(function(d){
            //return opts.group === undefined ? 'main' : d[opts.group]
            //instead of main would think a better default is opts.x
            return opts.group === undefined ? opts.y : d[opts.group];
          })
          .entries(data);
        }

if (opts.disabled != undefined){
          data.map(function(d, i){
            d.disabled = opts.disabled[i]
          })
        }

nv.addGraph(function() {
          chart = nv.models[opts.type]()
          .width(opts.width)
          .height(opts.height)

if (opts.type != 'bulletChart'){
            chart
            .x(function(d) { return d[opts.x] })
            .y(function(d) { return d[opts.y] })
          }

chart.xAxis
  .tickFormat(function(d) {return d3.time.format('%b %Y')(new Date( d * 86400000 ));})

chart.x2Axis
  .tickFormat(function(d) {return d3.time.format('%b %Y')(new Date( d * 86400000 ));})

d3.select('#' + opts.id)
    .append('svg')
    .datum(data)
    .transition().duration(500)
    .call(chart);

chart.dispatch.brush.on('brushstart',function(){ drawVerticalLines( opts ) });
    chart.dispatch.brush.on(
      'brushend',
      function(){ window.setTimeout(
        function() {drawVerticalLines( opts )},
        250
      )}
    );

nv.utils.windowResize(chart.update);
    return chart;
        },function() { drawVerticalLines( opts ) });
      };
    </script>
    
    
    
        <script>
        function drawVerticalLines( opts ){
      
          if (!(d3.select('#' + opts.id  + ' .nvd3 .nv-focus .nv-linesWrap').select('.vertical-lines')[0][0])) {
           d3.select('#' + opts.id  + ' .nvd3 .nv-focus .nv-linesWrap').append('g') 
              .attr('class', 'vertical-lines')
          }
          
          vertLines = d3.select('#' + opts.id  + ' .nvd3 .nv-focus .nv-linesWrap').select('.vertical-lines').selectAll('.vertical-line')
                          .data(
                            [ 
                              { 'date' : new Date('1967-11-30'),
                                'label' : 'something to highlight 1967'
                              } ,
                              { 'date' : new Date('2001-11-30'),
                                'label' : 'something to highlight 2001'
                              }
                            ] )
                            
          var vertG = vertLines.enter()
            .append('g')
            .attr('class', 'vertical-line')
            
          vertG.append('svg:line')
          vertG.append('text')
          
          vertLines.exit().remove()
          
          vertLines.selectAll('line')
              .attr('x1', function(d){
                 return chart.xAxis.scale()(d.date/60/60/24/1000)
              })
              .attr('x2', function(d){ return chart.xAxis.scale()(d.date/60/60/24/1000) })
              .attr('y1', chart.yAxis.scale().range()[0] )
              .attr('y2', chart.yAxis.scale().range()[1] )
              .style('stroke', 'red')
            
          vertLines.selectAll('text')
              .text( function(d) { return d.label })
              .attr('dy', '1em')
              //x placement ; change dy above for minor adjustments but mainly
              //    change the d.date/60/60/24/1000 
              //y placement ; change 2 to where you want vertical placement
              //rotate -90 but feel free to change to what you would like
              .attr('transform', function(d){
                 return  'translate(' +
                  chart.xAxis.scale()(d.date/60/60/24/1000) + 
                  ',' + 
                  chart.yAxis.scale()(2) +
                  ') rotate(-90)'
              })
              //also you can style however you would like
              //here is an example changing the font size
              .style('font-size','80%')
          
        }
        </script>
            
  </body>
</html>

Modified http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js to a secure url

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

Modified http://timelyportfolio.github.io/rCharts_nvd3_tests/libraries/widgets/nvd3/js/nv.d3.min-new.js to a secure url

Modified http://nvd3.org/assets/lib/fisheye.js to a secure url

https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js

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

https://timelyportfolio.github.io/rCharts_nvd3_tests/libraries/widgets/nvd3/js/nv.d3.min-new.js

https://nvd3.org/assets/lib/fisheye.js