Export to SVG in exact dimensions - Beginners' Questions

#1

2021-07-15

I have created a rectangle at position 15, 10 with 20, 30 mm size and when I export it into SVG I am getting the following svg with dimensions of width="19.957338", height="29.957338", x="15.021331" and y="10.021331". Why are these not saves in the exact integer coordinates?

The attached picture shows the settings and size in Inkscape.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
   width="210mm"
   height="297mm"
   viewBox="0 0 210 296.99999"
   version="1.1"
   id="svg5"
   inkscape:version="1.2-dev (9ee32be, 2021-06-19)"
   sodipodi:docname="box.svg"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:svg="http://www.w3.org/2000/svg">
  <sodipodi:namedview
     id="namedview7"
     pagecolor="#ffffff"
     bordercolor="#666666"
     borderopacity="1.0"
     inkscape:pageshadow="2"
     inkscape:pageopacity="0.0"
     inkscape:pagecheckerboard="0"
     inkscape:document-units="mm"
     showgrid="false"
     inkscape:zoom="3.5048376"
     inkscape:cx="61.343784"
     inkscape:cy="119.54905"
     inkscape:window-width="1416"
     inkscape:window-height="1250"
     inkscape:window-x="280"
     inkscape:window-y="30"
     inkscape:window-maximized="0"
     inkscape:current-layer="layer1"
     scale-x="1"
     inkscape:lockguides="false" />
  <defs
     id="defs2" />
  <g
     inkscape:label="Layer 1"
     inkscape:groupmode="layer"
     id="layer1">
    <rect
       style="fill:none;stroke:#000000;stroke-width:0.0426613;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none"
       id="rect1563"
       width="19.957338"
       height="29.957338"
       x="15.021331"
       y="10.021331" />
  </g>
</svg>