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I would like to propose a couple of new options for the GetLegendGraphic WMS request:
- labelMargin, to set the margin between icons and the related labels; I would use a default of 2/3 pixels so that labels have a small distance from the icons; currently for icons that are filling the given space (usually external images) there is no space between the icon and the label
- absoluteMargins (true|false): this is for raster legends; currently a proportional margin is applied, so that space between columns depends (for example) from labels text length; when absoluteMargins is true, I would use a fixed space margin (configurable with the already existing dx option); I would also switch to absolute margins by default (I don’t really understand the usage of proportional space between columns)
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