-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 24.04.2013 20:00, Dan Drake wrote: > On Wed, 24 Apr 2013 at 06:44AM -0700, LRN wrote: >> That said, i've noticed that you're using [scale=.4]. How would >> it look without scale=.4? The point is that DPI info should >> allow typesetter to guess image size correctly, and it should >> look OK without scaling. > > Let me admit my ignorance here: for computer-generated raster > graphics, I don't understand what DPI might even *mean*. Let's say > I use Sage to make an images that 500 pixels by 500 pixels. To > assign a meaningful dots-per-inch value, you need to have an idea > of how large the image should appear. That seems ill-defined to > me: the monitor I'm using right now is around 90 dpi; my Nexus S > smartphone is 233 dpi. (I'm assume "dot" = "pixel".) How can Sage > know the properties of the physical display, or what the user > wants? Maybe there's some standard or mechanism that I don't know > about, but it seems like this is something we can't solve for the > user. When image is typeset (by LaTeX) or printed, dpi value is used to infer image's physical size on the page (page's physical size is known, obviously - it's A4, for example).
As an experiment, try creating a simple image (say, a rectangle of 100x100 pixels), then save it as png, create multiple copies and give them different DPI values in Gimp. Then print each file (without stretching or fitting to page). This has nothing with your screen's ppi. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJReCUEAAoJEOs4Jb6SI2CwdSAIANsLnY2oWH4umiBKzanugcg+ NQDx04NdKWQVVh94GIEn0M5N/IVHjgBHSGzYJmvZvWF707T6Z8Sa+Ca7y3JsFhM0 dSy2kU0PP90oofuFZ5EsurFGpWdWpvYJgEHh/FdmcDaorSwQ8JZpe26dG6e+zocM FRQZq9zi1Jcf+afFc5mH0ebm7daPsD+YuG1LWQVd988tFd9We3yKNvT1Cxfo1r9o ZdjucE7tcNW4NqdiIMuQNgSqpDN8GNdnn05OzwcmdIZi9dXs8LiYxIb5AKGkicZr IlvqdbvV7U4C8nEw5pHDGydbKygZ/z804dwA855+nxqN0ZbkHi+amABja0LhAdE= =xBxG -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
