Re: [Inkscape-devel] [Inkscape-user] the Scale setting and Display units

Eduard Braun wrote If this sentence was as strong as it tries to appear, the transition from 90 dpi to 96 dpi would have been a lot less painful. Oh, sorry, I was wrong: the transition wouldn't even had been necessary! "Pixel" is not listed in The International System of Units (SI), where mm is (well, m of which it's a power: http://www.bipm.org/en/measurement-units/base-units.html). So you can't say that the definitions of pixel and mm have comparable weights and scopes. 1 mm is 1 mm. Full stop. I agree that today a pixel can be related to a real world size unit (1/96 of an Inch), but yesterday it wasn't so who can guarantee that tomorrow it will still be? SI units are there not to suffer of this uncertainty so that's what I call _real_world_units_, not something that can be changed to fit the needs of a so quickly evolving technology. Eduard Braun wrote If I get this sentence right, it makes me feel you've not completely understood how a (current) mm document is made. What could be misunderstood in a document where mm is the unit, the page is 297x210 and you have an object with dimensions 10x10? Actually I can't see any "viewBox scaling of the whole SVG" here, unless that's how you call the viewBox function itself. Perhaps you're making a bit of confusion between px as 1/96 of an inch (as we've been talking up to now) and px as user-unit (as per SVG specifications): a user-unit is not (necessarily) 1/96 of an Inch, and that's what the viewBox is for: nothing strange or outside SVG specifications here so broken extensions or import filters are simply buggy. And as far as Inkscape (since 0.92) is concerned 1 px (in the SVG sense, i.e. user-unit) is not always 1/90 or 1/96 inch anymore. At last. Luca -- Sent from: http://inkscape.13.x6.nabble.com/Inkscape-Dev-f2781808.html