Filtering legend of a Highcharts by only visible series

Question

We are using Highcharts and have some complex charts with roughly 75 series within on chart. The series are not used through the whole chart but only for range of three mont

Answer 1

Well just setting the showInLegend doesn't do the trick, there are some more hooks that need to be taken care of

Refer Halvor Strand's answer for a more recent way

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Old trick but still works

To Add

item.options.showInLegend = true;
chart.legend.renderItem(item);
chart.legend.render();

To Remove

item.options.showInLegend = false;
item.legendItem = null;
chart.legend.destroyItem(item);
chart.legend.render();

where, item can be a point or series

var item = chart.series[1];

Add Remove Legend Dynamically | Highchart & Highstock @ jsFiddle