arrow annotations invisible in RStudio Viewer

[danielkrizian]

Test arrow annotations on the graph symbolizing trade timings, direction and profitability.

Existing dygraph functionality: https://github.com/danielkrizian/dygraphs/blob/canvas-annotations/tests/canvas-annotation.html

[danielkrizian]

Arrow annotations now available (run /examples/ohlc-trades.R)

Works when opened in the browser with this button in the RStudio Viewer pane:

Doesn't work within RStudio Viewer:

@timelyportfolio , any idea why? I suspect it could have something to do with using g.ready() in the new script template, which is a way of telling the dygraph to do something after chart finished rendering:

<script>
  if (typeof gs === 'undefined') { var gs = [] };
  if (typeof blockRedraw === 'undefined') { var blockRedraw = false };
  (function(){
    var params = {{{ chartParams }}};
    gs.push(new Dygraph(
      document.getElementById( '{{chartId}}' ),
      _.unzip(params.data),
      params.options
    ));

    for (var i = 0; i < gs.length; i++) {
      var g = gs[i];
      g.ready(function () {
        var labels = g.getLabels();
        g.setAnnotations(_.map(params.options.annotations, function(annotation) {
          if (_.indexOf(labels, annotation.series) === -1) {
            if (_.isNumber(annotation.series)) {
              annotation.series = labels[annotation.series];
            }
          }
          return annotation;
        }));
      });
    }
  })();
</script>

[timelyportfolio]

Interesting and wonder if might be part of the same issue why nvd3 do not work. Unfortunately I do not know how to debug in RStudio viewer, so not sure how to attack this.

[danielkrizian]

There is some debugging environment for the RStudio Viewer under right-click-> Inspect: Perhaps @ramnathv has some leads on this?

[danielkrizian]

@timelyportfolio , ( @ramnathv ) : FYI the above commit https://github.com/danielkrizian/rChartsDygraphs/commit/b22e2af93e1caad9ae55b83ca8264e39d390249e , could be also possibly solving the nvd3 troubles you mentioned.