Own work - A loose partial vector equivalent of former image File:Irish_compass_rose.png , based on File:Octagram-in-square.svg, and converted from the following vector PostScript source code:

%!
306 396 translate 45 rotate 1.75 dup scale
0 0 79.6 0 360 arc closepath
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gsave 4{18 setlinewidth 0 setgray
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gsave 4{4.5 setlinewidth 0 setgray
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%EOF

 

This vector image includes elements that have been taken or adapted from this file:

 Octagram-in-square.svg.