javascript - Chart.js time scale showing one of the dates wrong -

for chart.js (master branch) line chart x-axis time scale, how come 1 of tick labels show "2016" , not full "yyyy-mm-dd" configured?

var barchartdata = {    labels: ["2013-03-09", "2013-03-16", "2013-03-23", "2013-03-30", "2013-04-06", "2013-04-13", "2013-04-20", "2013-04-27", "2013-05-04", "2013-05-11", "2013-05-18", "2013-05-25", "2013-06-01", "2013-06-08", "2013-06-15", "2013-06-22", "2013-06-29", "2013-07-06", "2013-07-13", "2013-07-20", "2013-07-27", "2013-08-03", "2013-08-10", "2013-08-17", "2013-08-24", "2013-08-31", "2013-09-07", "2013-09-14", "2013-09-21", "2013-09-28", "2013-10-05", "2013-10-12", "2013-10-19", "2013-10-26", "2013-11-02", "2013-11-09", "2013-11-16", "2013-11-23", "2013-11-30", "2013-12-07", "2013-12-14", "2013-12-21", "2013-12-28", "2014-01-04", "2014-01-11", "2014-01-18", "2014-01-25", "2014-02-01", "2014-02-08", "2014-02-15", "2014-02-22", "2014-03-01", "2014-03-08", "2014-03-15", "2014-03-22", "2014-03-29", "2014-04-05", "2014-04-12", "2014-04-19", "2014-04-26", "2014-05-03", "2014-05-10", "2014-05-17", "2014-05-24", "2014-05-31", "2014-06-07", "2014-06-14", "2014-06-21", "2014-06-28", "2014-07-05", "2014-07-12", "2014-07-19", "2014-07-26", "2014-08-02", "2014-08-09", "2014-08-16", "2014-08-23", "2014-08-30", "2014-09-06", "2014-09-13", "2014-09-20", "2014-09-27", "2014-10-04", "2014-10-11", "2014-10-18", "2014-10-25", "2014-11-01", "2014-11-08", "2014-11-15", "2014-11-22", "2014-11-29", "2014-12-06", "2014-12-13", "2014-12-20", "2014-12-27", "2015-01-03", "2015-01-10", "2015-01-17", "2015-01-24", "2015-01-31", "2015-02-07", "2015-02-14", "2015-02-21", "2015-02-28", "2015-03-07", "2015-03-14", "2015-03-21", "2015-03-28", "2015-04-04", "2015-04-11", "2015-04-18", "2015-04-25", "2015-05-02", "2015-05-09", "2015-05-16", "2015-05-23", "2015-05-30", "2015-06-06", "2015-06-13", "2015-06-20", "2015-06-27", "2015-07-04", "2015-07-11", "2015-07-18", "2015-07-25", "2015-08-01", "2015-08-08", "2015-08-15", "2015-08-22", "2015-08-29", "2015-09-05", "2015-09-12", "2015-09-19", "2015-09-26", "2015-10-03", "2015-10-10", "2015-10-17", "2015-10-24", "2015-10-31", "2015-11-07", "2015-11-14", "2015-11-21", "2015-11-28", "2015-12-05", "2015-12-12", "2015-12-19", "2015-12-26", "2016-01-09", "2016-01-16", "2016-01-23", "2016-01-30", "2016-02-06", "2016-02-13", "2016-02-20", "2016-02-27", "2016-03-05", "2016-03-12", "2016-03-19", "2016-03-26", "2016-04-02", "2016-04-09", "2016-04-16", "2016-04-23", "2016-04-30", "2016-05-07", "2016-05-14", "2016-05-21", "2016-05-28", "2016-06-04", "2016-06-11", "2016-06-18", "2016-06-25", "2016-07-02", "2016-07-09", "2016-07-16", "2016-07-23", "2016-07-30", "2016-08-06", "2016-08-13", "2016-08-20", "2016-08-27", "2016-09-03", "2016-09-10", "2016-09-17", "2016-09-24", "2016-10-01", "2016-10-08", "2016-10-15", "2016-10-22", "2016-10-29", "2016-11-05", "2016-11-12", "2016-11-19", "2016-11-26", "2016-12-03", "2016-12-10", "2016-12-17", "2016-12-24", "2016-12-31", "2017-01-07", "2017-01-14", "2017-01-21", "2017-01-28", "2017-02-04", "2017-02-11", "2017-02-18", "2017-02-25", "2017-03-04", "2017-03-11", "2017-03-18", "2017-03-25", "2017-04-01", "2017-04-08", "2017-04-15", "2017-04-22", "2017-04-29", "2017-05-06", "2017-05-13", "2017-05-20", "2017-05-27"],    datasets: [{      data: [10943, 29649, 6444, 2330, 36694, 9297, 8607, 3887, 23993, 2647, 10001, 1149, 1296, 3320, 31497, 3757, 21716, 7086, 4203, 10562, 8430, 107993, 15032, 80530, 12958, 55983, 56384, 39185, 111948, 78138, 48322, 22660, 45480, 44777, 51113, 80258, 122211, 170381, 142371, 121994, 111613, 90620, 414241, 233104, 124646, 208010, 178940, 141989, 94830, 120570, 159167, 72944, 148603, 175114, 182187, 151873, 197688, 182179, 162077, 127031, 156561, 160966, 169199, 270254, 260158, 297746, 271142, 329733, 295551, 291945, 281950, 265127, 351294, 261921, 391134, 389332, 435469, 367964, 367341, 434032, 610022, 547923, 470847, 509486, 630442, 516610, 354353, 258937, 342483, 441928, 461255, 502212, 537813, 438127, 333128, 508545, 637057, 786012, 862370, 753361, 746796, 802081, 953917, 987033, 909113, 844113, 737956, 701093, 817762, 737104, 926359, 1010303, 1019052, 999567, 883027, 1105711, 954929, 1056932, 979701, 1238064, 1298420, 976489, 1093544, 1299362, 1207673, 1005359, 1070534, 1039265, 1214629, 1153509, 1206815, 1029551, 1271941, 1378490, 1224951, 1264126, 1298636, 1627311, 1988087, 1213970, 1194402, 1616617, 1349672, 1689407, 1544482, 1453755, 1090021, 1263850, 1558628, 1485323, 2213783, 1737821, 1737132, 1612459, 1921402, 2146584, 1716372, 1625193, 1726418, 2092217, 1740689, 1778557, 1743900, 2511451, 2095225, 1906606, 2072093, 2271353, 2306996, 2052930, 2522264, 2318002, 2179580, 1929402, 2058817, 1919322, 2422068, 1886848, 1814088, 1831842, 2479928, 2651487, 1993542, 1866201, 2008784, 2348564, 2362529, 1953613, 1914884, 2716617, 2312342, 2128274, 2212512, 2194987, 2497429, 2312411, 2150084, 2937512, 2700244, 3056859, 2504414, 3588714, 2845134, 2477167, 2181928, 2147184, 2891877, 3350764, 3046479, 2675718, 2517153, 3072400, 3334467, 2314341, 2460462, 3509803, 3083554, 3408975, 2883753, 5736703]    }]  };    chart.defaults.global.defaultfontfamily = "'comic sans ms'";  chart.defaults.global.elements.point.radius = 0;  chart.defaults.global.elements.point.hoverradius = 0;    var ctx = document.getelementbyid("bar-chart").getcontext("2d");  new chart(ctx, {    type: 'line',    data: barchartdata,    options: {      responsive: true,      legend: {        display: false      },      title: {        display: false      },      scales: {        xaxes: [{          type: "time",          time: {                      displayformats: {                          quarter: 'yyyy-mm-dd'                      }          },          ticks: {            minrotation: 90          }        }]      }    }  });

<script src="http://www.chartjs.org/dist/master/chart.bundle.min.js"></script>  <canvas id="bar-chart"></canvas>

thanks!

i'm not sure bug actually. if expand fiddle, we'll see it's using abbreviated dates years, , quarters spelled out.

however, when shrink chart appears in screenshot, happens see october 2013, july 2014, april 2015, , beginning of january 2016, that's 1 looks weird.

i'm guessing that's because of ambiguity january 1 being both quarter , year. solution explicitly set spelled-out date format quarters and years in chart settings:

new chart(ctx, {   //stuff , things   scales: {     xaxes: [{       type: "time",       time: {         displayformats: {           year: 'yyyy-mm-dd',           quarter: 'yyyy-mm-dd'       }       //et cetera     }]   } });