Hi, I'm having trouble editing the qplot layout. I'm using the geom="tile" option and I want to do a few things: 1. move the vertical and horizontal gridlines so that they appear on the edge of each tile (right now they're in the middle) 2. bring the gridlines to the foreground and change their color I've been playing around with the opts(...) options but so far can't get any of them to work correctly. Has anyone done this or have an example thanks -- View this message in context: http://n4.nabble.com/qplot-themes-tp1388708p1388708.html Sent from the R help mailing list archive at Nabble.com.