Hi Phil and Liviu, thanks for your ideas - interesting reading.
I found a solution using tikz: Based on http://tex.stackexchange.com/questions/15990/draw-red-x-over-an-external-image-using-pgf-tikz , I developed the solution attached - as described in the link, the image is placed in a node, and one can draw. The nice thing: the inserting of the picture can be done in LyX! I will look into the pstricks solution, as it sounds also quite easy - could you post a small example? Thanks, Rainer On Tue, May 17, 2011 at 2:48 AM, Phil <philip_...@yahoo.com> wrote: > > >> I want to plot a square / circle over a graph (in pdf format) to >> highlight certain sections. I rmember that it is possible, but I do > > maybe there is an easier way... but what I usually do is use pstricks with > powerdot (I assume you can > > use the same technique with beamer) and then after I insert my graphic I add > in > a \psgrid to > > find the coordinates and then I put in a \psframebox or \psellipse where I > want > to highlight. > -- NEW GERMAN FAX NUMBER!!! Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Natural Sciences Building Office Suite 2039 Stellenbosch University Main Campus, Merriman Avenue Stellenbosch South Africa Cell: +27 - (0)83 9479 042 Fax: +27 - (0)86 516 2782 Fax: +49 - (0)321 2125 2244 email: rai...@krugs.de Skype: RMkrug Google: r.m.k...@gmail.com
Example.lyx
Description: application/lyx
