time in UTC tz format

[jangorecki]

It looks like Dygraphs uses local time when plotting, which often will be confusing. Google brings me to: http://stackoverflow.com/questions/24196183/dygraph-showing-dates-in-an-arbitrary-timezone/24196184#24196184 Do we have possibility to use it in rChartsDygraphs? If not, let treat it as future feature request.

[danielkrizian]

Quick fix on the JS level is:

"axes": {
  "x": {
    "valueFormatter": function(ms) {
      var date = new Date(ms);
      return date.toLocaleDateString();
    }
  }
}

Credit: https://github.com/danielkrizian/dygraphs/issues/16

Prototypically speaking, rough rCharts wrapper equivalent would be to pass the following list viasetOpts and rCharts object will JSONize it:

axes = list(x=list(valueFormatter="#!
    function(ms) {
      var date = new Date(ms);
      return date.toLocaleDateString();
    }
    !#"))`

Away from my usual workspace, so apologies for syntax inaccuracies.