On Jan 15, 2016, at 11:24 , Andreas Höschler <ahoe...@smartsoft.de> wrote: > > However, I generated the image rep with a 851 x 899 view and wrote it into a > PNG file (code in earlier mail).
Yes, I saw, but you didn’t include (or I couldn't find) the log output that showed the size of the NSImage object, even though you had a line of code to log it. NSImage, when given image data that has A x B pixels and a PPI (pixels per inch) of C, may choose to ignore C, rather than use it to compute C x D points. It’s not clear whether this happened in your case or not. It does this because PPI is often just wrong. The actual pixel dimensions are the only reliable numbers. > When I open this PNG with Preview.app it appears much larger (probably the > 1792 x 1798). The PNG occupies almost the complete height of my retina > display screen. PNG attached! > > <A.png> > > So it seems that Preview.app when opening a PNGs takes pixels for points or > who know what. Same thing. Preview doesn’t believe any metadata about the image size. It just works with the pixels. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
