I want to have a 1px line between each sub-part of clustered bar. I tried to use barWidthRatio="0.98" it sort of looks ok but it's ratio and not pixels, when the window is resized it might have bigger gap than 1px. Also tried using <Stroke> on the BarSeries but it creates a line all around the sub-part square meaning it's 1px less on left/right and top/bottom it looks bad because the one part looks smaller than the second sub-part.
Is there easy way to create the line as part of BarChart properties ? Thank you.
