Change Details

When there is only one key item in a chart, there is no need for a key. Here are some examples: - https://commons.wikimedia.org/wiki/Data:Great_Lakes_Ice_Cover.chart - https://commons.wikimedia.org/wiki/Data:Views/Dansmuseet.chart - https://commons.wikimedia.org/wiki/Data:Italoamericani.Line.chart In all such cases, no key should be shown as the type of value being tracked is explained on either the axis label or the chart title.

When there is only one series in a chart, there is no need to display the legend. Here are some examples: - https://commons.wikimedia.org/wiki/Data:Great_Lakes_Ice_Cover.chart - https://commons.wikimedia.org/wiki/Data:Views/Dansmuseet.chart - https://commons.wikimedia.org/wiki/Data:Italoamericani.Line.chart In all such cases, no legend should be shown as the type of value being tracked is explained on either the axis label or the chart title.

When there is only one key itemseries in a chart, there is no need for a keyto display the legend. Here are some examples: - https://commons.wikimedia.org/wiki/Data:Great_Lakes_Ice_Cover.chart - https://commons.wikimedia.org/wiki/Data:Views/Dansmuseet.chart - https://commons.wikimedia.org/wiki/Data:Italoamericani.Line.chart In all such cases, no keyno legend should be shown as the type of value being tracked is explained on either the axis label or the chart title.