Aha! that's really interesting. I'll check the resolution information for the two files. The .png I use are almost always derived by export from Adobe Illustrator, so I'll see what the options are for fine-tuning.
Thanks for the tip! N -----Original Message----- From: Hussein Shafie [mailto:huss...@xmlmind.com] Sent: woensdag 4 maart 2020 16:48 To: Grundtvig Nielsen Niels Cc: xmleditor-support@xmlmind.com Subject: Re: [XXE] another puzzle! Caution! Atos External email. Do not open attachments or click links, unless this email comes from a known sender and you know the content is safe. On 3/4/20 3:33 PM, Grundtvig Nielsen Niels wrote: > Using the technique you explained to me, I have am now comfortable > preparing <fig> elements that contain more than one <image>. Just one > case, however, is now giving strange results: which is all the > stranger when I have used exactly the same technique and settings for > other pairs of graphics and not run into any problems. > > *in XML Mind (two graphics_xxe) the identical images, both resized at > 21%, are the same height on screen > > *output to .pdf (twoGraphics_acrobat) they show up at different > heights > > What have I creatively managed to get wrong this time? let me know if > you need any source files for examination. > When displaying an image, XXE does not care about the resolution of raster images (GIF, PNG, JPEG, etc). It just considers the image size in pixels. (Web browsers do this too.) All XSL-FO processors (FOP, XEP, XFC, AHF, etc) consider the resolution of raster images in order to determine the *absolute* image size (i.e. in cm, mm, in, etc). When this resolution is not stored in the image file, the default resolution is 72dpi, 96dpi or 120dpi depending on the XSL-FO processor and its configuration. My guess is that the "YUMI_28.png" and "YUMI_29.png" files contain different resolution info (or "YUMI_28.png" contains no resolution info, hence defaults to something like 120dpi and "YUMI_29.png" contains 72dpi). In order to get consistent results when generating PDF, it is almost mandatory to store resolution info in your raster image files. Storing resolution info in the raster image file should be easy using any image editor. For example, using GIMP (free, open source, highly recommended; https://www.gimp.org/), it's the "Image|Print Size" menu item, "X Resolution" and "Y Resolution" fields in pixels/inch. See attached screenshot. ********************************************************************************************* Worldline is a registered trade mark and trading name owned by Worldline through its holding company. This e-mail and the documents attached are confidential and intended solely for the addressee. If you receive this e-mail in error, you are not authorized to copy, disclose, use or retain it. Please notify the sender immediately and delete this email from your systems. As emails may be intercepted, amended or lost, they are not secure. Worldline therefore can accept no liability for any errors or their content. Although Worldline endeavours to maintain a virus-free network, we do not warrant that this transmission is virus-free and can accept no liability for any damages resulting from any virus transmitted. The risks are deemed to be accepted by everyone who communicates with Worldline by email. -- XMLmind XML Editor Support List xmleditor-support@xmlmind.com https://www.xmlmind.com/mailman/listinfo/xmleditor-support
