Markers not shown with areasplinerange plot

[drmrbrewer]

Expected behaviour

I would expect markers to be shown with an areasplinerange plot just as they are with an areaspline plot. Yes, the range aspect of it makes it a slightly different animal, having two values associated with each point rather than just one, but I would still expect it to be possible to show markers for those two points, instead of just nothing. When displaying a shared tooltip over a chart having a mix of areasplinerange and areaspline plot types, although values for both series appear in the tooltip, only the markers on the areaspline plot react to hover events.... it just doesn't look right IMHO... the range plot just looks "dead" in comparison to the animated non-range plot.

Actual behaviour

Markers are not shown with an areasplinerange plot.

Live demo with steps to reproduce

http://jsfiddle.net/L2uo2898/

Affected browser(s)

All

[pawelfus]

Related UserVoice topic. It says for arearange but I assume it applies also for areasplinerange.

[drmrbrewer]

Yes I assume so. Hopefully you will consider implementing this. I think it would be a very enhancing enhancement :)

[pawelfus]

Simple POC for both markers, which works like a plugin: http://jsfiddle.net/kezrmt9x/

  (function(H) {
    var origDrawPoints = H.Series.prototype.drawPoints,
      defaultOptions = H.getOptions().plotOptions,
      defaultMarkerOptions = defaultOptions.line.marker,
      defaultHaloOptions = defaultOptions.area.states;

    // Generate symbol:
    H.seriesTypes.arearange.prototype.getSymbol = function() {
      return this.getCyclic(
        'symbol',
        'circle',
        this.chart.options.symbols
      );
    };

    // Set options:
    H.wrap(H.seriesTypes.arearange.prototype, 'init', function(proceed, chart, userOptions) {
      var ret = proceed.apply(this, Array.prototype.slice.call(arguments, 1));

      this.options.marker = H.merge(defaultMarkerOptions, userOptions.marker || {});
      this.options.states = H.merge(defaultHaloOptions, userOptions.states || {});

      return ret;
    });

    // Render points:
    H.wrap(H.seriesTypes.arearange.prototype, 'drawPoints', function(proceed) {
      var len = this.points.length,
        point,
        i;

      // Draw bottom points:
      origDrawPoints.apply(this, Array.prototype.slice.call(arguments, 1));

      i = 0;
      while (i < len) {
        point = this.points[i];
        point.lowerGraphic = point.graphic;
        point.graphic = point.upperGraphic;
        point.plotY = point.plotHigh;
        i++;
      }

      // Draw top points:
      origDrawPoints.apply(this, Array.prototype.slice.call(arguments, 1));

      i = 0;
      while (i < len) {
        point = this.points[i];
        point.upperGraphic = point.graphic;
        point.graphic = point.lowerGraphic;
        point.plotY = point.plotLow;
        i++;
      }
    });

    // Update halo:
    H.wrap(H.seriesTypes.arearange.prototype.pointClass.prototype, 'haloPath', function(proceed) {
      var path = proceed.apply(this, Array.prototype.slice.call(arguments, 1));
      if (this.upperGraphic) {
        this.plotY = this.plotHigh;
        path = path.concat(
          proceed.apply(this, Array.prototype.slice.call(arguments, 1))
        );
        this.plotY = this.plotLow;
      }
      return path;
    });

    // Destroy upper graphic:
    H.wrap(H.seriesTypes.arearange.prototype.pointClass.prototype, 'destroy', function(proceed) {
      if (this.upperGraphic) {
        this.upperGraphic = this.upperGraphic.destroy();
      }

      return proceed.apply(this, Array.prototype.slice.call(arguments, 1));
    });
  })(Highcharts);

It's not a perfect solution (halo is clipped, there's no option to set different markers top vs bottom, etc.).

[drmrbrewer]

@pawelfus nice work. I also note that, in my current design, I have points of a certain radius that expand on hover to a larger radius. With the new method of yours, this also isn't handled... see e.g. http://jsfiddle.net/ksubbk66/

Is there any reason why the marker property cannot be supported natively (and consistently) for the range type plot? Or maybe you're just working towards that?

[pawelfus]

Marker options is one of the etc's ;) Updated: http://jsfiddle.net/9n2927w8/ I agree, it would be cool to support natively this.

[drmrbrewer]

@pawelfus I look forward to seeing this in the next version :)

[pawelfus]

Examples:

• http://jsfiddle.net/w2j9m9bc/
• http://jsfiddle.net/vxwajquj/
• http://jsfiddle.net/udo1dzcp/
• (additionally fixed tooltip position in polar *-ranges series: http://jsfiddle.net/8kmsr7Lf/ )

[pawelfus]

Internal note:

• I'm not sure about official demo ( new look: http://jsfiddle.net/4c91m09w/ ) - probably we should disable markers or change them at least
• it still needs to be added to the docs (I don't know where to add //docs reference)

[drmrbrewer]

Could markers be disabled by default for range series, to maintain the existing behaviour (non breaking) but with the option to enable? I think the inclusion of markers on range series is a big improvement. Thanks.

[pawelfus]

I will leave it up to @TorsteinHonsi I think it's questionable what's more important: consistency between series types for defaults or keeping old design. Probably if this could be released as part of 5.1.0 then it should be fine.

[TorsteinHonsi]

I prefer consistency between series types. I've simply disabled markers in one of the demos where I think it was disturbing.

[drmrbrewer]

Will this be in the next 5.0.x or does it wait until 5.1.0? Thanks.

[TorsteinHonsi]

It will be released with v5.0.13.