[pstricks] How can I make a double line with no color in between?

Luis Sequeira lichinho at icloud.com
Fri Sep 23 18:36:14 CEST 2016


> On 23 Sep 2016, at 17:26, pstricks-request at tug.org wrote:
> 
> \documentclass[a4paper,12pt]{article}
> \usepackage{pst-node}
> \begin{document}
> 
> \begin{pspicture}[showgrid](4,4)
> \pnodes{A}(0,0)(0,4)(4,4)(4,0)
> \ncline[doubleline,doublecolor=blue,linecolor=red,linewidth=3mm]{A0}{A2}
> \ncline[doubleline,doublecolor=blue,linecolor=red,linewidth=3mm,strokeopacity=0.5]{A1}{A3}
> \end{pspicture}
> 
> \end{document}


Thanks for the quick reply, but strokeopacity affects the the (red) lines ; I would like to be able to change the opacity of the blue area between the lines 
(to make it transparent).
Is there some parameter that controls the opacity of that area between the lines?

Thank you

LS





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