Hi Paul, Thanks for the tips. I am using ggplot indeed, but I am trying to "drill down", and extract several grobs, most of which are gTrees or frames. Until now, I have more or less managed, but I am having difficulties because I would like to get at the gTrees that are in each cell of a frame. From a grid.ls() printout, I managed to discover that these are cellGrobs, but I cannot find any documentation for these. So, the more straightforward question would be "If I have a frameGrob, with several children (in different levels), how can I get the grob that is in row 2, column 4?". I assume there is a way, but I could not find out how...
Thanks a lot for the great package, BTW! Pedro Paul Murrell wrote: > > Hi > > > Pedro Barros wrote: >> Hi All, >> >> I am trying to find out how to access the components of a ggplot plot, >> and I >> found this reply from Paul Murrel >> http://www.nabble.com/navigating-ggplot-viewports-tt14826352.html#a15056223. >> I tried it, and it works. >> However, I am trying to develop some functions that will do the drawing >> "automatically", and usually I will not know the full name of the grob >> that >> has the layout vp, like "plot.gtree.76". Is there a way that I can repeat >> the same process, without going through the grid.ls step? > > > Being able to divine the names of grobs (and viewports) is dependent on > the system being used to name the grobs/viewports. One approach, taken > in lattice for viewports, is to provide a function, e.g., > trellis.vpname(), that builds a name from salient bits of information, > e.g., panel numbers. Another important source of information is > documentation of the naming scheme, e.g., for ggplot2, Hadley's > http://had.co.nz/ggplot2/book/grid.pdf > > Paul > > >> >> Thanks, >> Pedro > > -- > Dr Paul Murrell > Department of Statistics > The University of Auckland > Private Bag 92019 > Auckland > New Zealand > 64 9 3737599 x85392 > [EMAIL PROTECTED] > http://www.stat.auckland.ac.nz/~paul/ > > ______________________________________________ > 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. > > -- View this message in context: http://www.nabble.com/ggplot-2---editing-in-the-%22panel_1_1%22-viewport-tp19726397p19757385.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
