Le 19/09/2018 à 22:45, Daniel a écrit :
"1pt" equals "1.25px" (and therefore 1.25 user units)https://www.w3.org/TR/SVG11/coords.html#Units The basic problem is that LyX treats 1 svg pixel as 1pt rather than 0.8pt.
The link you gave assumes that everything is displayed at 90dpi (which gives the 1.25 once you know that 1pt is 1/72th of inch).
I have no idea of how computations are done for svg images : external program rsvg, qt, inkscape...
JMarc