LegendSpacing

As of Version 9, all the functionality of the PlotLegends package is built into the Wolfram System. »

LegendSpacing

is an option for Legend that specifies the amount of space around each key box on a scale where the box is 1.

Details and Options

To use LegendSpacing, you first need to load the Plot Legends Package using Needs["PlotLegends`"].
The following settings can be given:
n a number

Automatic determine spacing automatically
For the boxes to be adjacent (a continuous line, for instance), LegendSpacing should be set to 0.

Wolfram Language code: Needs["PlotLegends`"]

Normally spaced keys in the legend:

Wolfram Language code: Plot[{Sin[x], Cos[x]}, {x, 0, 2Pi}, PlotLegend -> {"sine", "cosine"}, LegendSpacing -> 0]

Increasing the value of LegendSpacing increases the distance between the keys in the legend:

Wolfram Language code: Plot[{Sin[x], Cos[x]}, {x, 0, 2Pi}, PlotLegend -> {"sine", "cosine"}, LegendSpacing -> 0.2]

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	n	a number
	Automatic	determine spacing automatically