Hello,
I've been using Lyx for about 12 months, and think it's an absolutely brilliant piece of software. I am currently using version 1.3.1.
However, I have been having major difficulties with the quality of images in a document when exporting to DVI, PS or PDF. Images appear kind of "blocky", almost like they are at a low resolution.
I have tried with various image formats, including JPEG, GIF, PNG and EPS. I have included the graphicx package, as I understood that this may be beneficial when using JPEGs, but it didn't seem to help.
I have tried using different programs, such as dvips, pdflatex, and tex2pdf, but they all produce poor output. I am guessing that these programs are not the problem, because the DVI itself is poor quality, so I am thinking it might be a Latex issue? I am not very knowledgable when it comes to Latex so I can't be sure.
Any help on this issues is much appreciated. I'm starting a thesis in a few weeks, and would hate to have to use a normal word processor, but if I can't get my images and charts etc to look acceptable I may have no choice.
I don't know what kind of images these are. But if you can - use vector formats instead of bitmap formats like jpeg/gif. eps/ps support both vector and bitmap graphichs, so it can be good or bad depending on what's really in the file. Converting a jpeg to eps does obviously not make it vector graphichs.
There are some things, such as photos, that cannot be made with vector graphichs. If so, use the highest resolution you can for anything you want to print.
I usually draw my figures in xfig, and use the xfig external inset in lyx. That gives nice figures in: * direct printing from lyx (via dvips) * .pdf for reading on screen * .pdf printed
If your images are software generated (as opposed to drawing them in a xfig-like program) check if your software can generate postscript directly without going via some bitmap format.
Helge Hafting
