On Fri, Mar 11, 2011 at 12:29 PM, Marius Hofert <m_hof...@web.de> wrote: > Dear Deepayan, > > many thanks for answering. > > Another thing I am wondering is the following: I know you can have (3d-like) > "crosses" in the wireframe plot. But are there any other 3d-like plot > symbols? Of course one can use different colors to distinguish between > several points. The problem is that most of the scientific journals do not > allow colors [or it's expensive]. I am thus wondering if the plot symbols > have equivalent 3d-versions. It looks a bit odd to draw a 2d cross in a 3d > wireframe. Or a circle. Concerning the circle, it could be a small ball in 3d > for example. Is there anything like this? >
No, at least not easily. The 3D crosses are done by mapping each point into 3 perpendicular line segments, then projecting the endpoints into the 2D space, and then joining them. This is hardcoded in panel.3dscatter() -- search for the section inside 'if (cross)'. For other 3D plotting characters, you need to replicate this process (which is not really that difficult, but a bit tedious). If you are going to be doing a lot of fancy 3D graphics, I would strongly suggest considering rgl, which is a "real" 3D graphics system. Proper 3D graphics are difficult in systems based on vector graphics (like R graphics). -Deepayan ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
